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Multitenant : Upgrading to Oracle Database 18c

This article provides an overview of upgrading an existing multitenant database to Oracle 18c. Upgrades can be very complicated, so you must always read the upgrade manual, and test thoroughly before considering an upgrade of a production environment.

Remember, 18c is essentially 12.2.0.2, so the possible upgrade options will be similar to those described in upgrading to Oracle Database 12c.

Related articles.

Assumptions

This article is focused on upgrading a multitenant database. If your starting point is a non-CDB database, you should be reading the following article.

This article assumes your source database is of a version supported for direct upgrade to 18c. This is the whole list, but remember multitenant database have only existed from 12.1.0.1 onward.

11.2.0.3, 11.2.0.4, 12.1.0.1, 12.1.0.2, 12.2.0.1

In this example we are doing an upgrade from 12.2 to 18c. The process is very similar for version 12.1, but the pre-upgrade and post-upgrade fixup actions may vary a little.

It's important to have backups of everything before you start! Some of these steps are destructive, and if something goes wrong you have no alternative but to restore from backups and start again.

Remember, this article is not a replacement for reading the upgrade documentation. Each upgrade has the potential to be different, depending on what options are installed.

Prerequisities

Make sure you have all the OS prerequisites in place by running the 18c preinstall package. On Oracle Linux you can do this by installing the preinstall package. It probably makes sense to update the remaining packages also.

yum install -y oracle-database-preinstall-18c
yum update -y

Install 18c Software

You can read about the installation process in more detail here, but for this example I'll keep it brief. The following commands will perform a silent installation of the 18c software.

export ORACLE_HOME=$ORACLE_BASE/product/18.0.0/dbhome_1
export SOFTWARE_DIR=/u01/software
export ORA_INVENTORY=/u01/app/oraInventory

mkdir -p ${ORACLE_HOME}
cd $ORACLE_HOME

/bin/unzip -oq ${SOFTWARE_DIR}/LINUX.X64_180000_db_home.zip

./runInstaller -ignorePrereq -waitforcompletion -silent                        \
    -responseFile ${ORACLE_HOME}/install/response/db_install.rsp               \
    oracle.install.option=INSTALL_DB_SWONLY                                    \
    ORACLE_HOSTNAME=${ORACLE_HOSTNAME}                                         \
    UNIX_GROUP_NAME=oinstall                                                   \
    INVENTORY_LOCATION=${ORA_INVENTORY}                                        \
    SELECTED_LANGUAGES=en,en_GB                                                \
    ORACLE_HOME=${ORACLE_HOME}                                                 \
    ORACLE_BASE=${ORACLE_BASE}                                                 \
    oracle.install.db.InstallEdition=EE                                        \
    oracle.install.db.OSDBA_GROUP=dba                                          \
    oracle.install.db.OSBACKUPDBA_GROUP=dba                                    \
    oracle.install.db.OSDGDBA_GROUP=dba                                        \
    oracle.install.db.OSKMDBA_GROUP=dba                                        \
    oracle.install.db.OSRACDBA_GROUP=dba                                       \
    SECURITY_UPDATES_VIA_MYORACLESUPPORT=false                                 \
    DECLINE_SECURITY_UPDATES=true

Run the root scripts when prompted.

As a root user, execute the following script(s):
        1. /u01/app/oracle/product/18.0.0/dbhome_1/root.sh

At this point you should also patch the new Oracle home, but in this case we will forgo that step to keep things simple.

Run preupgrade.jar

Download the latest "preupgrade.jar" file from MOS 884522.1. If you don't have MOS access you can miss out the next step.

Put the latest "preupgrade.jar" into the 18c Oracle home.

export ORACLE_HOME=$ORACLE_BASE/product/18.0.0/dbhome_1
cd $ORACLE_HOME/rdbms/admin
unzip -o /u01/software/preupgrade_181_cbuild_6_lf.zip

Make sure you are using the original Oracle home and run the "preupgrade.jar".

export ORACLE_SID=cdb1
export ORAENV_ASK=NO
. oraenv
export ORAENV_ASK=YES

export ORACLE_HOME=$ORACLE_BASE/product/12.2.0.1/db_1

$ORACLE_BASE/product/18.0.0/dbhome_1/jdk/bin/java -jar $ORACLE_BASE/product/18.0.0/dbhome_1/rdbms/admin/preupgrade.jar TERMINAL TEXT

Here is the output from an example run against a 12.2 database. There is output for the root container, seed and any user-defined pluggable databases.

$ $ORACLE_BASE/product/18.0.0/dbhome_1/jdk/bin/java -jar $ORACLE_BASE/product/18.0.0/dbhome_1/rdbms/admin/preupgrade.jar TERMINAL TEXT
Report generated by Oracle Database Pre-Upgrade Information Tool Version
18.0.0.0.0 Build: 6 on 2019-01-19T11:29:43

Upgrade-To version: 18.0.0.0.0

=======================================
Status of the database prior to upgrade
=======================================
      Database Name:  CDB1
     Container Name:  CDB$ROOT
       Container ID:  1
            Version:  12.2.0.1.0
         Compatible:  12.2.0
          Blocksize:  8192
           Platform:  Linux x86 64-bit
      Timezone File:  26
  Database log mode:  NOARCHIVELOG
           Readonly:  FALSE
            Edition:  EE

  Oracle Component                       Upgrade Action    Current Status
  ----------------                       --------------    --------------
  Oracle Server                          [to be upgraded]  VALID
  JServer JAVA Virtual Machine           [to be upgraded]  VALID
  Oracle XDK for Java                    [to be upgraded]  VALID
  Real Application Clusters              [to be upgraded]  OPTION OFF
  Oracle Workspace Manager               [to be upgraded]  VALID
  OLAP Analytic Workspace                [to be upgraded]  VALID
  Oracle Label Security                  [to be upgraded]  VALID
  Oracle Database Vault                  [to be upgraded]  VALID
  Oracle Text                            [to be upgraded]  VALID
  Oracle XML Database                    [to be upgraded]  VALID
  Oracle Java Packages                   [to be upgraded]  VALID
  Oracle Multimedia                      [to be upgraded]  VALID
  Oracle Spatial                         [to be upgraded]  VALID
  Oracle OLAP API                        [to be upgraded]  VALID

==============
BEFORE UPGRADE
==============

  REQUIRED ACTIONS
  ================
  None

  RECOMMENDED ACTIONS
  ===================
  1.  (AUTOFIXUP) Gather stale data dictionary statistics prior to database
      upgrade in off-peak time using:

        EXECUTE DBMS_STATS.GATHER_DICTIONARY_STATS;

      Dictionary statistics do not exist or are stale (not up-to-date).

      Dictionary statistics help the Oracle optimizer find efficient SQL
      execution plans and are essential for proper upgrade timing. Oracle
      recommends gathering dictionary statistics in the last 24 hours before
      database upgrade.

      For information on managing optimizer statistics, refer to the 12.2.0.1
      Oracle Database SQL Tuning Guide.

  2.  (AUTOFIXUP) Gather statistics on fixed objects prior the upgrade.

      None of the fixed object tables have had stats collected.

      Gathering statistics on fixed objects, if none have been gathered yet, is
      recommended prior to upgrading.

      For information on managing optimizer statistics, refer to the 12.2.0.1
      Oracle Database SQL Tuning Guide.

  INFORMATION ONLY
  ================
  3.  To help you keep track of your tablespace allocations, the following
      AUTOEXTEND tablespaces are expected to successfully EXTEND during the
      upgrade process.

                                                 Min Size
      Tablespace                        Size     For Upgrade
      ----------                     ----------  -----------
      SYSAUX                             460 MB       679 MB
      SYSTEM                             800 MB      1241 MB
      TEMP                                33 MB       150 MB
      UNDOTBS1                            70 MB       439 MB

      Minimum tablespace sizes for upgrade are estimates.

  4.  No action needed.

      Using default parallel upgrade options, this CDB with 2 PDBs will first
      upgrade the CDB$ROOT, and then upgrade at most 1 PDBs at a time using 2
      parallel processes per PDB.

      The number of PDBs upgraded in parallel and the number of parallel
      processes per PDB can be adjusted as described in Database Upgrade Guide.

  ORACLE GENERATED FIXUP SCRIPT
  =============================
  All of the issues in database CDB1 container CDB$ROOT
  which are identified above as BEFORE UPGRADE "(AUTOFIXUP)" can be resolved by
  executing the following from within the container

    SQL>@/u01/app/oracle/cfgtoollogs/cdb1/preupgrade/preupgrade_fixups.sql

=============
AFTER UPGRADE
=============

  REQUIRED ACTIONS
  ================
  None

  RECOMMENDED ACTIONS
  ===================
  5.  Upgrade the database time zone file using the DBMS_DST package.

      The database is using time zone file version 26 and the target 18.0.0.0.0
      release ships with time zone file version 31.

      Oracle recommends upgrading to the desired (latest) version of the time
      zone file.  For more information, refer to "Upgrading the Time Zone File
      and Timestamp with Time Zone Data" in the 18.0.0.0.0 Oracle Database
      Globalization Support Guide.

  6.  (AUTOFIXUP) Gather dictionary statistics after the upgrade using the
      command:

        EXECUTE DBMS_STATS.GATHER_DICTIONARY_STATS;

      Oracle recommends gathering dictionary statistics after upgrade.

      Dictionary statistics provide essential information to the Oracle
      optimizer to help it find efficient SQL execution plans. After a database
      upgrade, statistics need to be re-gathered as there can now be tables
      that have significantly changed during the upgrade or new tables that do
      not have statistics gathered yet.

  7.  Gather statistics on fixed objects after the upgrade and when there is a
      representative workload on the system using the command:

        EXECUTE DBMS_STATS.GATHER_FIXED_OBJECTS_STATS;

      This recommendation is given for all preupgrade runs.

      Fixed object statistics provide essential information to the Oracle
      optimizer to help it find efficient SQL execution plans.  Those
      statistics are specific to the Oracle Database release that generates
      them, and can be stale upon database upgrade.

      For information on managing optimizer statistics, refer to the 12.2.0.1
      Oracle Database SQL Tuning Guide.

  ORACLE GENERATED FIXUP SCRIPT
  =============================
  All of the issues in database CDB1 container CDB$ROOT
  which are identified above as AFTER UPGRADE "(AUTOFIXUP)" can be resolved by
  executing the following from within the container

    SQL>@/u01/app/oracle/cfgtoollogs/cdb1/preupgrade/postupgrade_fixups.sql


Report generated by Oracle Database Pre-Upgrade Information Tool Version
18.0.0.0.0 Build: 6 on 2019-01-19T11:30:05

Upgrade-To version: 18.0.0.0.0

=======================================
Status of the database prior to upgrade
=======================================
      Database Name:  CDB1
     Container Name:  PDB$SEED
       Container ID:  2
            Version:  12.2.0.1.0
         Compatible:  12.2.0
          Blocksize:  8192
           Platform:  Linux x86 64-bit
      Timezone File:  26
  Database log mode:  NOARCHIVELOG
           Readonly:  TRUE
            Edition:  EE

  Oracle Component                       Upgrade Action    Current Status
  ----------------                       --------------    --------------
  Oracle Server                          [to be upgraded]  VALID
  JServer JAVA Virtual Machine           [to be upgraded]  VALID
  Oracle XDK for Java                    [to be upgraded]  VALID
  Real Application Clusters              [to be upgraded]  OPTION OFF
  Oracle Workspace Manager               [to be upgraded]  VALID
  OLAP Analytic Workspace                [to be upgraded]  VALID
  Oracle Label Security                  [to be upgraded]  VALID
  Oracle Database Vault                  [to be upgraded]  VALID
  Oracle Text                            [to be upgraded]  VALID
  Oracle XML Database                    [to be upgraded]  VALID
  Oracle Java Packages                   [to be upgraded]  VALID
  Oracle Multimedia                      [to be upgraded]  VALID
  Oracle Spatial                         [to be upgraded]  VALID
  Oracle OLAP API                        [to be upgraded]  VALID

==============
BEFORE UPGRADE
==============

  REQUIRED ACTIONS
  ================
  None

  RECOMMENDED ACTIONS
  ===================
  1.  (AUTOFIXUP) Gather stale data dictionary statistics prior to database
      upgrade in off-peak time using:

        EXECUTE DBMS_STATS.GATHER_DICTIONARY_STATS;

      Dictionary statistics do not exist or are stale (not up-to-date).

      Dictionary statistics help the Oracle optimizer find efficient SQL
      execution plans and are essential for proper upgrade timing. Oracle
      recommends gathering dictionary statistics in the last 24 hours before
      database upgrade.

      For information on managing optimizer statistics, refer to the 12.2.0.1
      Oracle Database SQL Tuning Guide.

  2.  (AUTOFIXUP) Gather statistics on fixed objects prior the upgrade.

      None of the fixed object tables have had stats collected.

      Gathering statistics on fixed objects, if none have been gathered yet, is
      recommended prior to upgrading.

      For information on managing optimizer statistics, refer to the 12.2.0.1
      Oracle Database SQL Tuning Guide.

  INFORMATION ONLY
  ================
  3.  To help you keep track of your tablespace allocations, the following
      AUTOEXTEND tablespaces are expected to successfully EXTEND during the
      upgrade process.

                                                 Min Size
      Tablespace                        Size     For Upgrade
      ----------                     ----------  -----------
      SYSAUX                             330 MB       571 MB
      SYSTEM                             250 MB       689 MB
      TEMP                                64 MB       150 MB
      UNDOTBS1                           100 MB       439 MB

      Minimum tablespace sizes for upgrade are estimates.

  4.  No action needed.

      Using default parallel upgrade options, this CDB with 1 PDBs will first
      upgrade the CDB$ROOT, and then upgrade at most 1 PDBs at a time using 2
      parallel processes per PDB.

      The number of PDBs upgraded in parallel and the number of parallel
      processes per PDB can be adjusted as described in Database Upgrade Guide.

  ORACLE GENERATED FIXUP SCRIPT
  =============================
  All of the issues in database CDB1 container PDB$SEED
  which are identified above as BEFORE UPGRADE "(AUTOFIXUP)" can be resolved by
  executing the following from within the container

    SQL>@/u01/app/oracle/cfgtoollogs/cdb1/preupgrade/preupgrade_fixups.sql

=============
AFTER UPGRADE
=============

  REQUIRED ACTIONS
  ================
  None

  RECOMMENDED ACTIONS
  ===================
  5.  Upgrade the database time zone file using the DBMS_DST package.

      The database is using time zone file version 26 and the target 18.0.0.0.0
      release ships with time zone file version 31.

      Oracle recommends upgrading to the desired (latest) version of the time
      zone file.  For more information, refer to "Upgrading the Time Zone File
      and Timestamp with Time Zone Data" in the 18.0.0.0.0 Oracle Database
      Globalization Support Guide.

  6.  (AUTOFIXUP) Gather dictionary statistics after the upgrade using the
      command:

        EXECUTE DBMS_STATS.GATHER_DICTIONARY_STATS;

      Oracle recommends gathering dictionary statistics after upgrade.

      Dictionary statistics provide essential information to the Oracle
      optimizer to help it find efficient SQL execution plans. After a database
      upgrade, statistics need to be re-gathered as there can now be tables
      that have significantly changed during the upgrade or new tables that do
      not have statistics gathered yet.

  7.  Gather statistics on fixed objects after the upgrade and when there is a
      representative workload on the system using the command:

        EXECUTE DBMS_STATS.GATHER_FIXED_OBJECTS_STATS;

      This recommendation is given for all preupgrade runs.

      Fixed object statistics provide essential information to the Oracle
      optimizer to help it find efficient SQL execution plans.  Those
      statistics are specific to the Oracle Database release that generates
      them, and can be stale upon database upgrade.

      For information on managing optimizer statistics, refer to the 12.2.0.1
      Oracle Database SQL Tuning Guide.

  ORACLE GENERATED FIXUP SCRIPT
  =============================
  All of the issues in database CDB1 container PDB$SEED
  which are identified above as AFTER UPGRADE "(AUTOFIXUP)" can be resolved by
  executing the following from within the container

    SQL>@/u01/app/oracle/cfgtoollogs/cdb1/preupgrade/postupgrade_fixups.sql


Report generated by Oracle Database Pre-Upgrade Information Tool Version
18.0.0.0.0 Build: 6 on 2019-01-19T11:30:24

Upgrade-To version: 18.0.0.0.0

=======================================
Status of the database prior to upgrade
=======================================
      Database Name:  CDB1
     Container Name:  PDB1
       Container ID:  3
            Version:  12.2.0.1.0
         Compatible:  12.2.0
          Blocksize:  8192
           Platform:  Linux x86 64-bit
      Timezone File:  26
  Database log mode:  NOARCHIVELOG
           Readonly:  FALSE
            Edition:  EE

  Oracle Component                       Upgrade Action    Current Status
  ----------------                       --------------    --------------
  Oracle Server                          [to be upgraded]  VALID
  JServer JAVA Virtual Machine           [to be upgraded]  VALID
  Oracle XDK for Java                    [to be upgraded]  VALID
  Real Application Clusters              [to be upgraded]  OPTION OFF
  Oracle Workspace Manager               [to be upgraded]  VALID
  OLAP Analytic Workspace                [to be upgraded]  VALID
  Oracle Label Security                  [to be upgraded]  VALID
  Oracle Database Vault                  [to be upgraded]  VALID
  Oracle Text                            [to be upgraded]  VALID
  Oracle XML Database                    [to be upgraded]  VALID
  Oracle Java Packages                   [to be upgraded]  VALID
  Oracle Multimedia                      [to be upgraded]  VALID
  Oracle Spatial                         [to be upgraded]  VALID
  Oracle OLAP API                        [to be upgraded]  VALID

==============
BEFORE UPGRADE
==============

  REQUIRED ACTIONS
  ================
  None

  RECOMMENDED ACTIONS
  ===================
  1.  (AUTOFIXUP) Gather stale data dictionary statistics prior to database
      upgrade in off-peak time using:

        EXECUTE DBMS_STATS.GATHER_DICTIONARY_STATS;

      Dictionary statistics do not exist or are stale (not up-to-date).

      Dictionary statistics help the Oracle optimizer find efficient SQL
      execution plans and are essential for proper upgrade timing. Oracle
      recommends gathering dictionary statistics in the last 24 hours before
      database upgrade.

      For information on managing optimizer statistics, refer to the 12.2.0.1
      Oracle Database SQL Tuning Guide.

  2.  (AUTOFIXUP) Gather statistics on fixed objects prior the upgrade.

      None of the fixed object tables have had stats collected.

      Gathering statistics on fixed objects, if none have been gathered yet, is
      recommended prior to upgrading.

      For information on managing optimizer statistics, refer to the 12.2.0.1
      Oracle Database SQL Tuning Guide.

  INFORMATION ONLY
  ================
  3.  To help you keep track of your tablespace allocations, the following
      AUTOEXTEND tablespaces are expected to successfully EXTEND during the
      upgrade process.

                                                 Min Size
      Tablespace                        Size     For Upgrade
      ----------                     ----------  -----------
      SYSAUX                             690 MB       904 MB
      SYSTEM                             350 MB       786 MB
      TEMP                                64 MB       150 MB
      UNDOTBS1                           360 MB       441 MB

      Minimum tablespace sizes for upgrade are estimates.

  4.  No action needed.

      Using default parallel upgrade options, this CDB with 1 PDBs will first
      upgrade the CDB$ROOT, and then upgrade at most 1 PDBs at a time using 2
      parallel processes per PDB.

      The number of PDBs upgraded in parallel and the number of parallel
      processes per PDB can be adjusted as described in Database Upgrade Guide.

  ORACLE GENERATED FIXUP SCRIPT
  =============================
  All of the issues in database CDB1 container PDB1
  which are identified above as BEFORE UPGRADE "(AUTOFIXUP)" can be resolved by
  executing the following from within the container

    SQL>@/u01/app/oracle/cfgtoollogs/cdb1/preupgrade/preupgrade_fixups.sql

=============
AFTER UPGRADE
=============

  REQUIRED ACTIONS
  ================
  None

  RECOMMENDED ACTIONS
  ===================
  5.  Upgrade the database time zone file using the DBMS_DST package.

      The database is using time zone file version 26 and the target 18.0.0.0.0
      release ships with time zone file version 31.

      Oracle recommends upgrading to the desired (latest) version of the time
      zone file.  For more information, refer to "Upgrading the Time Zone File
      and Timestamp with Time Zone Data" in the 18.0.0.0.0 Oracle Database
      Globalization Support Guide.

  6.  (AUTOFIXUP) Gather dictionary statistics after the upgrade using the
      command:

        EXECUTE DBMS_STATS.GATHER_DICTIONARY_STATS;

      Oracle recommends gathering dictionary statistics after upgrade.

      Dictionary statistics provide essential information to the Oracle
      optimizer to help it find efficient SQL execution plans. After a database
      upgrade, statistics need to be re-gathered as there can now be tables
      that have significantly changed during the upgrade or new tables that do
      not have statistics gathered yet.

  7.  Gather statistics on fixed objects after the upgrade and when there is a
      representative workload on the system using the command:

        EXECUTE DBMS_STATS.GATHER_FIXED_OBJECTS_STATS;

      This recommendation is given for all preupgrade runs.

      Fixed object statistics provide essential information to the Oracle
      optimizer to help it find efficient SQL execution plans.  Those
      statistics are specific to the Oracle Database release that generates
      them, and can be stale upon database upgrade.

      For information on managing optimizer statistics, refer to the 12.2.0.1
      Oracle Database SQL Tuning Guide.

  ORACLE GENERATED FIXUP SCRIPT
  =============================
  All of the issues in database CDB1 container PDB1
  which are identified above as AFTER UPGRADE "(AUTOFIXUP)" can be resolved by
  executing the following from within the container

    SQL>@/u01/app/oracle/cfgtoollogs/cdb1/preupgrade/postupgrade_fixups.sql


==================
PREUPGRADE SUMMARY
==================
  /u01/app/oracle/cfgtoollogs/cdb1/preupgrade/preupgrade.log
  /u01/app/oracle/cfgtoollogs/cdb1/preupgrade/preupgrade_fixups.sql
  /u01/app/oracle/cfgtoollogs/cdb1/preupgrade/postupgrade_fixups.sql

Execute fixup scripts across the entire CDB:

Before upgrade:

1. Execute preupgrade fixups with the below command
$ORACLE_HOME/perl/bin/perl -I$ORACLE_HOME/perl/lib -I$ORACLE_HOME/rdbms/admin $ORACLE_HOME/rdbms/admin/catcon.pl -l /u01/app/oracle/cfgtoollogs/cdb1/preupgrade/ -b preup_cdb1 /u01/app/oracle/cfgtoollogs/cdb1/preupgrade/preupgrade_fixups.sql

2. Review logs under /u01/app/oracle/cfgtoollogs/cdb1/preupgrade/

After the upgrade:

1. Execute postupgrade fixups with the below command
$ORACLE_HOME/perl/bin/perl -I$ORACLE_HOME/perl/lib -I$ORACLE_HOME/rdbms/admin $ORACLE_HOME/rdbms/admin/catcon.pl -l /u01/app/oracle/cfgtoollogs/cdb1/preupgrade/ -b postup_cdb1 /u01/app/oracle/cfgtoollogs/cdb1/preupgrade/postupgrade_fixups.sql

2. Review logs under /u01/app/oracle/cfgtoollogs/cdb1/preupgrade/

Preupgrade complete: 2019-01-19T11:30:29
$

Perform Pre-Upgrade Actions

The output from the "preupgrade.jar" lists a number of pre-upgrade recommendations. Some must be manually applied. Others are incorporated into the "preupgrade_fixups.sql" script. In the following example we will only run the "preupgrade_fixups.sql" script and recompile invalid objects. Remember, in a multitenant database we must run the pre-upgrade actions on the root, seed and all user-defined pluggable databases.

$ORACLE_HOME/perl/bin/perl \
    -I$ORACLE_HOME/perl/lib \
    -I$ORACLE_HOME/rdbms/admin \
    $ORACLE_HOME/rdbms/admin/catcon.pl \
    -l /u01/app/oracle/cfgtoollogs/${ORACLE_SID}/preupgrade/ \
    -b preup_cdb1 \
    /u01/app/oracle/cfgtoollogs/${ORACLE_SID}/preupgrade/preupgrade_fixups.sql

We can recompile invalid objects in the all containers except the seed database using the following command.

$ORACLE_HOME/perl/bin/perl \
    -I$ORACLE_HOME/perl/lib \
    -I$ORACLE_HOME/rdbms/admin \
    $ORACLE_HOME/rdbms/admin/catcon.pl \
    -l /u01/app/oracle/cfgtoollogs/${ORACLE_SID}/preupgrade/ \
    -b preup_${ORACLE_SID}_recompile \
    --C 'PDB$SEED' \
    $ORACLE_HOME/rdbms/admin/utlrp.sql

Upgrade the Database

With the pre-upgrade actions complete we can start the upgrade. Shutdown the source database.

sqlplus / as sysdba <<EOF
shutdown immediate;
exit;
EOF

Copy the config files from the old to the new Oracle home. You should check the contents of the "listener.ora" file to see if there are any references to the Oracle home path. If there are, amend them.

cp $ORACLE_HOME/network/admin/*.ora $ORACLE_BASE/product/18.0.0/dbhome_1/network/admin

cp $ORACLE_HOME/dbs/orapwcdb1 $ORACLE_BASE/product/18.0.0/dbhome_1/dbs/
cp $ORACLE_HOME/dbs/spfilecdb1.ora $ORACLE_BASE/product/18.0.0/dbhome_1/dbs/

Switch to the 18c listener.

lsnrctl stop

export ORACLE_HOME=$ORACLE_BASE/product/18.0.0/dbhome_1
export PATH=${ORACLE_HOME}/bin:$PATH

lsnrctl start

Start the database using the 18c Oracle home, ready for the upgrade. All user-defined PDBs must also be open in upgrade mode, or they will not be included in the upgrade, and will need to be upgraded manually later.

sqlplus / as sysdba <<EOF
startup upgrade;
alter pluggable database all open upgrade force;
exit;
EOF

You can run the upgrade using either of the following commands. The second is actually just a shorthand for the former.

# Regular upgrade command.
cd $ORACLE_HOME/rdbms/admin
$ORACLE_HOME/perl/bin/perl catctl.pl catupgrd.sql

# Shorthand command.
$ORACLE_HOME/bin/dbupgrade

Here is the output from an example run against a 12.2 multitenant database. The output looks quite long, as the upgrade is run against the root, seed and user-defined PDBs.

$ $ORACLE_HOME/bin/dbupgrade

Argument list for [/u01/app/oracle/product/18.0.0/dbhome_1/rdbms/admin/catctl.pl]
Run in                c = 0
Do not run in         C = 0
Input Directory       d = 0
Echo OFF              e = 1
Simulate              E = 0
Forced cleanup        F = 0
Log Id                i = 0
Child Process         I = 0
Log Dir               l = 0
Priority List Name    L = 0
Upgrade Mode active   M = 0
SQL Process Count     n = 0
SQL PDB Process Count N = 0
Open Mode Normal      o = 0
Start Phase           p = 0
End Phase             P = 0
Reverse Order         r = 0
AutoUpgrade Resume    R = 0
Script                s = 0
Serial Run            S = 0
RO User Tablespaces   T = 0
Display Phases        y = 0
Debug catcon.pm       z = 0
Debug catctl.pl       Z = 0

catctl.pl VERSION: [18.0.0.0.0]
           STATUS: [Production]
            BUILD: [RDBMS_18.3.0.0.0DBRU_LINUX.X64_180627]


/u01/app/oracle/product/18.0.0/dbhome_1/rdbms/admin/orahome = [/u01/app/oracle/product/18.0.0/dbhome_1]
/u01/app/oracle/product/18.0.0/dbhome_1/bin/orabasehome = [/u01/app/oracle/product/18.0.0/dbhome_1]
catctlGetOrabase = [/u01/app/oracle/product/18.0.0/dbhome_1]

Analyzing file /u01/app/oracle/product/18.0.0/dbhome_1/rdbms/admin/catupgrd.sql

Log file directory = [/tmp/cfgtoollogs/upgrade20190119114540]

catcon::set_log_file_base_path: ALL catcon-related output will be written to [/tmp/cfgtoollogs/upgrade20190119114540/catupgrd_catcon_11636.lst]

catcon::set_log_file_base_path: catcon: See [/tmp/cfgtoollogs/upgrade20190119114540/catupgrd*.log] files for output generated by scripts

catcon::set_log_file_base_path: catcon: See [/tmp/cfgtoollogs/upgrade20190119114540/catupgrd_*.lst] files for spool files, if any


Number of Cpus        = 2
Database Name         = cdb1
DataBase Version      = 12.2.0.1.0
catcon::set_log_file_base_path: ALL catcon-related output will be written to [/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542/catupgrd_catcon_11636.lst]

catcon::set_log_file_base_path: catcon: See [/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542/catupgrd*.log] files for output generated by scripts

catcon::set_log_file_base_path: catcon: See [/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542/catupgrd_*.lst] files for spool files, if any


Log file directory = [/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542]

PDB Parallel SQL Process Count = [2] is higher or equal to CPU Count = [2]
Concurrent PDB Upgrades defaulting to CPU Count [2]
Parallel SQL Process Count (PDB)      = 2
Parallel SQL Process Count (CDB$ROOT) = 4
Concurrent PDB Upgrades               = 2
Generated PDB Inclusion:[PDB$SEED PDB1]
Components in [CDB$ROOT]
    Installed [APS CATALOG CATJAVA CATPROC CONTEXT DV JAVAVM OLS ORDIM OWM SDO XDB XML XOQ]
Not Installed [APEX EM MGW ODM RAC WK]

------------------------------------------------------
Phases [0-108]         Start Time:[2019_01_19 11:45:43]
Container Lists Inclusion:[CDB$ROOT] Exclusion:[NONE]
------------------------------------------------------
***********   Executing Change Scripts   ***********
Serial   Phase #:0    [CDB$ROOT] Files:1    Time: 42s
***************   Catalog Core SQL   ***************
Serial   Phase #:1    [CDB$ROOT] Files:5    Time: 38s
Restart  Phase #:2    [CDB$ROOT] Files:1    Time: 0s
***********   Catalog Tables and Views   ***********
Parallel Phase #:3    [CDB$ROOT] Files:19   Time: 17s
Restart  Phase #:4    [CDB$ROOT] Files:1    Time: 0s
*************   Catalog Final Scripts   ************
Serial   Phase #:5    [CDB$ROOT] Files:7    Time: 11s
*****************   Catproc Start   ****************
Serial   Phase #:6    [CDB$ROOT] Files:1    Time: 8s
*****************   Catproc Types   ****************
Serial   Phase #:7    [CDB$ROOT] Files:2    Time: 9s
Restart  Phase #:8    [CDB$ROOT] Files:1    Time: 0s
****************   Catproc Tables   ****************
Parallel Phase #:9    [CDB$ROOT] Files:66   Time: 17s
Restart  Phase #:10   [CDB$ROOT] Files:1    Time: 1s
*************   Catproc Package Specs   ************
Serial   Phase #:11   [CDB$ROOT] Files:1    Time: 44s
Restart  Phase #:12   [CDB$ROOT] Files:1    Time: 0s
**************   Catproc Procedures   **************
Parallel Phase #:13   [CDB$ROOT] Files:94   Time: 7s
Restart  Phase #:14   [CDB$ROOT] Files:1    Time: 1s
Parallel Phase #:15   [CDB$ROOT] Files:117  Time: 12s
Restart  Phase #:16   [CDB$ROOT] Files:1    Time: 0s
Serial   Phase #:17   [CDB$ROOT] Files:17   Time: 3s
Restart  Phase #:18   [CDB$ROOT] Files:1    Time: 0s
*****************   Catproc Views   ****************
Parallel Phase #:19   [CDB$ROOT] Files:32   Time: 19s
Restart  Phase #:20   [CDB$ROOT] Files:1    Time: 0s
Serial   Phase #:21   [CDB$ROOT] Files:3    Time: 12s
Restart  Phase #:22   [CDB$ROOT] Files:1    Time: 0s
Parallel Phase #:23   [CDB$ROOT] Files:24   Time: 175s
Restart  Phase #:24   [CDB$ROOT] Files:1    Time: 1s
Parallel Phase #:25   [CDB$ROOT] Files:12   Time: 112s
Restart  Phase #:26   [CDB$ROOT] Files:1    Time: 0s
Serial   Phase #:27   [CDB$ROOT] Files:1    Time: 0s
Serial   Phase #:28   [CDB$ROOT] Files:3    Time: 4s
Serial   Phase #:29   [CDB$ROOT] Files:1    Time: 0s
Restart  Phase #:30   [CDB$ROOT] Files:1    Time: 0s
***************   Catproc CDB Views   **************
Serial   Phase #:31   [CDB$ROOT] Files:1    Time: 1s
Restart  Phase #:32   [CDB$ROOT] Files:1    Time: 0s
Serial   Phase #:34   [CDB$ROOT] Files:1    Time: 0s
*****************   Catproc PLBs   *****************
Serial   Phase #:35   [CDB$ROOT] Files:288  Time: 32s
Serial   Phase #:36   [CDB$ROOT] Files:1    Time: 0s
Restart  Phase #:37   [CDB$ROOT] Files:1    Time: 0s
Serial   Phase #:38   [CDB$ROOT] Files:2    Time: 4s
Restart  Phase #:39   [CDB$ROOT] Files:1    Time: 0s
***************   Catproc DataPump   ***************
Serial   Phase #:40   [CDB$ROOT] Files:3    Time: 61s
Restart  Phase #:41   [CDB$ROOT] Files:1    Time: 0s
******************   Catproc SQL   *****************
Parallel Phase #:42   [CDB$ROOT] Files:13   Time: 114s
Restart  Phase #:43   [CDB$ROOT] Files:1    Time: 0s
Parallel Phase #:44   [CDB$ROOT] Files:11   Time: 14s
Restart  Phase #:45   [CDB$ROOT] Files:1    Time: 1s
Parallel Phase #:46   [CDB$ROOT] Files:3    Time: 2s
Restart  Phase #:47   [CDB$ROOT] Files:1    Time: 0s
*************   Final Catproc scripts   ************
Serial   Phase #:48   [CDB$ROOT] Files:1    Time: 4s
Restart  Phase #:49   [CDB$ROOT] Files:1    Time: 0s
**************   Final RDBMS scripts   *************
Serial   Phase #:50   [CDB$ROOT] Files:1    Time: 5s
************   Upgrade Component Start   ***********
Serial   Phase #:51   [CDB$ROOT] Files:1    Time: 0s
Restart  Phase #:52   [CDB$ROOT] Files:1    Time: 1s
**********   Upgrading Java and non-Java   *********
Serial   Phase #:53   [CDB$ROOT] Files:2    Time: 309s
*****************   Upgrading XDB   ****************
Restart  Phase #:54   [CDB$ROOT] Files:1    Time: 0s
Serial   Phase #:56   [CDB$ROOT] Files:3    Time: 6s
Serial   Phase #:57   [CDB$ROOT] Files:3    Time: 6s
Parallel Phase #:58   [CDB$ROOT] Files:9    Time: 3s
Parallel Phase #:59   [CDB$ROOT] Files:25   Time: 6s
Serial   Phase #:60   [CDB$ROOT] Files:4    Time: 7s
Serial   Phase #:61   [CDB$ROOT] Files:1    Time: 0s
Serial   Phase #:62   [CDB$ROOT] Files:31   Time: 4s
Serial   Phase #:63   [CDB$ROOT] Files:1    Time: 0s
Parallel Phase #:64   [CDB$ROOT] Files:6    Time: 3s
Serial   Phase #:65   [CDB$ROOT] Files:2    Time: 25s
Serial   Phase #:66   [CDB$ROOT] Files:3    Time: 39s
****************   Upgrading ORDIM   ***************
Restart  Phase #:67   [CDB$ROOT] Files:1    Time: 0s
Serial   Phase #:69   [CDB$ROOT] Files:1    Time: 1s
Parallel Phase #:70   [CDB$ROOT] Files:2    Time: 35s
Serial   Phase #:71   [CDB$ROOT] Files:1    Time: 71s
Restart  Phase #:72   [CDB$ROOT] Files:1    Time: 1s
Parallel Phase #:73   [CDB$ROOT] Files:2    Time: 16s
Serial   Phase #:74   [CDB$ROOT] Files:2    Time: 1s
*****************   Upgrading SDO   ****************
Restart  Phase #:75   [CDB$ROOT] Files:1    Time: 0s
Serial   Phase #:77   [CDB$ROOT] Files:1    Time: 55s
Serial   Phase #:78   [CDB$ROOT] Files:1    Time: 2s
Restart  Phase #:79   [CDB$ROOT] Files:1    Time: 0s
Serial   Phase #:80   [CDB$ROOT] Files:1    Time: 95s
Restart  Phase #:81   [CDB$ROOT] Files:1    Time: 0s
Parallel Phase #:82   [CDB$ROOT] Files:3    Time: 56s
Restart  Phase #:83   [CDB$ROOT] Files:1    Time: 0s
Serial   Phase #:84   [CDB$ROOT] Files:1    Time: 6s
Restart  Phase #:85   [CDB$ROOT] Files:1    Time: 0s
Serial   Phase #:86   [CDB$ROOT] Files:1    Time: 8s
Restart  Phase #:87   [CDB$ROOT] Files:1    Time: 0s
Parallel Phase #:88   [CDB$ROOT] Files:4    Time: 100s
Restart  Phase #:89   [CDB$ROOT] Files:1    Time: 1s
Serial   Phase #:90   [CDB$ROOT] Files:1    Time: 1s
Restart  Phase #:91   [CDB$ROOT] Files:1    Time: 0s
Serial   Phase #:92   [CDB$ROOT] Files:2    Time: 11s
Restart  Phase #:93   [CDB$ROOT] Files:1    Time: 1s
Serial   Phase #:94   [CDB$ROOT] Files:1    Time: 1s
Restart  Phase #:95   [CDB$ROOT] Files:1    Time: 0s
*******   Upgrading ODM, WK, EXF, RUL, XOQ   *******
Serial   Phase #:96   [CDB$ROOT] Files:1    Time: 21s
Restart  Phase #:97   [CDB$ROOT] Files:1    Time: 1s
***********   Final Component scripts    ***********
Serial   Phase #:98   [CDB$ROOT] Files:1    Time: 4s
*************   Final Upgrade scripts   ************
Serial   Phase #:99   [CDB$ROOT] Files:1    Time: 55s
*******************   Migration   ******************
Serial   Phase #:100  [CDB$ROOT] Files:1    Time: 0s
***   End PDB Application Upgrade Pre-Shutdown   ***
Serial   Phase #:101  [CDB$ROOT] Files:1    Time: 1s
Serial   Phase #:102  [CDB$ROOT] Files:1    Time: 1s
Serial   Phase #:103  [CDB$ROOT] Files:1    Time: 59s
*****************   Post Upgrade   *****************
Serial   Phase #:104  [CDB$ROOT] Files:1    Time: 4s
****************   Summary report   ****************
Serial   Phase #:105  [CDB$ROOT] Files:1    Time: 1s
***   End PDB Application Upgrade Post-Shutdown   **
Serial   Phase #:106  [CDB$ROOT] Files:1    Time: 0s
Serial   Phase #:107  [CDB$ROOT] Files:1    Time: 1s
Serial   Phase #:108  [CDB$ROOT] Files:1     Time: 0s

------------------------------------------------------
Phases [0-108]         End Time:[2019_01_19 12:15:34]
Container Lists Inclusion:[CDB$ROOT] Exclusion:[NONE]
------------------------------------------------------

Start processing of PDBs (PDB$SEED)
[/u01/app/oracle/product/18.0.0/dbhome_1/perl/bin/perl /u01/app/oracle/product/18.0.0/dbhome_1/rdbms/admin/catctl.pl -I -i pdb_seed -n 2 -c 'PDB$SEED' -l /u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542 /u01/app/oracle/product/18.0.0/dbhome_1/rdbms/admin/catupgrd.sql]

Start processing of PDBs (PDB1)
[/u01/app/oracle/product/18.0.0/dbhome_1/perl/bin/perl /u01/app/oracle/product/18.0.0/dbhome_1/rdbms/admin/catctl.pl -I -i pdb1 -n 2 -c 'PDB1' -l /u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542 /u01/app/oracle/product/18.0.0/dbhome_1/rdbms/admin/catupgrd.sql]

Argument list for [/u01/app/oracle/product/18.0.0/dbhome_1/rdbms/admin/catctl.pl]
Run in                c = PDB$SEED
Do not run in         C = 0
Input Directory       d = 0
Echo OFF              e = 1
Simulate              E = 0
Forced cleanup        F = 0
Log Id                i = pdb_seed
Child Process         I = 1
Log Dir               l = /u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542
Priority List Name    L = 0
Upgrade Mode active   M = 0
SQL Process Count     n = 2
SQL PDB Process Count N = 0
Open Mode Normal      o = 0
Start Phase           p = 0
End Phase             P = 0
Reverse Order         r = 0
AutoUpgrade Resume    R = 0
Script                s = 0
Serial Run            S = 0
RO User Tablespaces   T = 0
Display Phases        y = 0
Debug catcon.pm       z = 0
Debug catctl.pl       Z = 0

catctl.pl VERSION: [18.0.0.0.0]
           STATUS: [Production]
            BUILD: [RDBMS_18.3.0.0.0DBRU_LINUX.X64_180627]



Argument list for [/u01/app/oracle/product/18.0.0/dbhome_1/rdbms/admin/catctl.pl]
Run in                c = PDB1
Do not run in         C = 0
Input Directory       d = 0
Echo OFF              e = 1
Simulate              E = 0
Forced cleanup        F = 0
Log Id                i = pdb1
Child Process         I = 1
Log Dir               l = /u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542
Priority List Name    L = 0
Upgrade Mode active   M = 0
SQL Process Count     n = 2
SQL PDB Process Count N = 0
Open Mode Normal      o = 0
Start Phase           p = 0
End Phase             P = 0
Reverse Order         r = 0
AutoUpgrade Resume    R = 0
Script                s = 0
Serial Run            S = 0
RO User Tablespaces   T = 0
Display Phases        y = 0
Debug catcon.pm       z = 0
Debug catctl.pl       Z = 0

catctl.pl VERSION: [18.0.0.0.0]
           STATUS: [Production]
            BUILD: [RDBMS_18.3.0.0.0DBRU_LINUX.X64_180627]


/u01/app/oracle/product/18.0.0/dbhome_1/rdbms/admin/orahome = [/u01/app/oracle/product/18.0.0/dbhome_1]
/u01/app/oracle/product/18.0.0/dbhome_1/rdbms/admin/orahome = [/u01/app/oracle/product/18.0.0/dbhome_1]
/u01/app/oracle/product/18.0.0/dbhome_1/bin/orabasehome = [/u01/app/oracle/product/18.0.0/dbhome_1]
catctlGetOrabase = [/u01/app/oracle/product/18.0.0/dbhome_1]

Analyzing file /u01/app/oracle/product/18.0.0/dbhome_1/rdbms/admin/catupgrd.sql

Log file directory = [/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542]

/u01/app/oracle/product/18.0.0/dbhome_1/bin/orabasehome = [/u01/app/oracle/product/18.0.0/dbhome_1]
catctlGetOrabase = [/u01/app/oracle/product/18.0.0/dbhome_1]

Analyzing file /u01/app/oracle/product/18.0.0/dbhome_1/rdbms/admin/catupgrd.sql

Log file directory = [/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542]

catcon::set_log_file_base_path: ALL catcon-related output will be written to [/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542/catupgrdpdb1_catcon_19550.lst]

catcon::set_log_file_base_path: catcon: See [/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542/catupgrdpdb1*.log] files for output generated by scripts

catcon::set_log_file_base_path: ALL catcon-related output will be written to [/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542/catupgrdpdb_seed_catcon_19548.lst]

catcon::set_log_file_base_path: catcon: See [/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542/catupgrdpdb_seed*.log] files for output generated by scripts

catcon::set_log_file_base_path: catcon: See [/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542/catupgrdpdb1_*.lst] files for spool files, if any

catcon::set_log_file_base_path: catcon: See [/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542/catupgrdpdb_seed_*.lst] files for spool files, if any


Number of Cpus        = 2

Number of Cpus        = 2
Database Name         = cdb1
Database Name         = cdb1
DataBase Version      = 18.0.0.0.0
DataBase Version      = 18.0.0.0.0
Generated PDB Inclusion:[PDB$SEED]
CDB$ROOT  Open Mode = [OPEN]
Generated PDB Inclusion:[PDB1]
Components in [PDB$SEED]
    Installed [APS CATALOG CATJAVA CATPROC CONTEXT DV JAVAVM OLS ORDIM OWM SDO XDB XML XOQ]
Not Installed [APEX EM MGW ODM RAC WK]
CDB$ROOT  Open Mode = [OPEN]
Components in [PDB1]
    Installed [APEX APS CATALOG CATJAVA CATPROC CONTEXT DV JAVAVM OLS ORDIM OWM SDO XDB XML XOQ]
Not Installed [EM MGW ODM RAC WK]

------------------------------------------------------
Phases [0-108]         Start Time:[2019_01_19 12:15:40]
Container Lists Inclusion:[PDB$SEED] Exclusion:[NONE]
------------------------------------------------------
***********   Executing Change Scripts   ***********
Serial   Phase #:0    [PDB$SEED] Files:1
------------------------------------------------------
Phases [0-108]         Start Time:[2019_01_19 12:15:40]
Container Lists Inclusion:[PDB1] Exclusion:[NONE]
------------------------------------------------------
***********   Executing Change Scripts   ***********
Serial   Phase #:0    [PDB1] Files:1    Time: 33s
***************   Catalog Core SQL   ***************
Serial   Phase #:1    [PDB$SEED] Files:5    Time: 53s
***************   Catalog Core SQL   ***************
Serial   Phase #:1    [PDB1] Files:5    Time: 69s
Restart  Phase #:2    [PDB$SEED] Files:1    Time: 1s
***********   Catalog Tables and Views   ***********
Parallel Phase #:3    [PDB$SEED] Files:19    Time: 72s
Restart  Phase #:2    [PDB1] Files:1    Time: 1s
***********   Catalog Tables and Views   ***********
Parallel Phase #:3    [PDB1] Files:19   Time: 39s
Restart  Phase #:4    [PDB$SEED] Files:1    Time: 0s
*************   Catalog Final Scripts   ************
Serial   Phase #:5    [PDB$SEED] Files:7   Time: 24s
Restart  Phase #:4    [PDB1] Files:1    Time: 0s
*************   Catalog Final Scripts   ************
Serial   Phase #:5    [PDB1] Files:7    Time: 14s
*****************   Catproc Start   ****************
Serial   Phase #:6    [PDB$SEED] Files:1    Time: 14s
*****************   Catproc Start   ****************
Serial   Phase #:6    [PDB1] Files:1    Time: 11s
*****************   Catproc Types   ****************
Serial   Phase #:7    [PDB$SEED] Files:2    Time: 13s
*****************   Catproc Types   ****************
Serial   Phase #:7    [PDB1] Files:2    Time: 11s
Restart  Phase #:8    [PDB$SEED] Files:1    Time: 0s
****************   Catproc Tables   ****************
Parallel Phase #:9    [PDB$SEED] Files:66    Time: 9s
Restart  Phase #:8    [PDB1] Files:1    Time: 0s
****************   Catproc Tables   ****************
Parallel Phase #:9    [PDB1] Files:66   Time: 27s
Restart  Phase #:10   [PDB$SEED] Files:1    Time: 1s
*************   Catproc Package Specs   ************
Serial   Phase #:11   [PDB$SEED] Files:1   Time: 36s
Restart  Phase #:10   [PDB1] Files:1    Time: 1s
*************   Catproc Package Specs   ************
Serial   Phase #:11   [PDB1] Files:1    Time: 98s
Restart  Phase #:12   [PDB$SEED] Files:1    Time: 0s
**************   Catproc Procedures   **************
Parallel Phase #:13   [PDB$SEED] Files:94    Time: 91s
Restart  Phase #:12   [PDB1] Files:1    Time: 0s
**************   Catproc Procedures   **************
Parallel Phase #:13   [PDB1] Files:94   Time: 16s
Restart  Phase #:14   [PDB$SEED] Files:1    Time: 0s
Parallel Phase #:15   [PDB$SEED] Files:117   Time: 14s
Restart  Phase #:14   [PDB1] Files:1    Time: 0s
Parallel Phase #:15   [PDB1] Files:117  Time: 28s
Restart  Phase #:16   [PDB$SEED] Files:1    Time: 0s
Serial   Phase #:17   [PDB$SEED] Files:17  Time: 24s
Restart  Phase #:16   [PDB1] Files:1    Time: 0s
Serial   Phase #:17   [PDB1] Files:17   Time: 6s
Restart  Phase #:18   [PDB$SEED] Files:1    Time: 1s
*****************   Catproc Views   ****************
Parallel Phase #:19   [PDB$SEED] Files:32   Time: 6s
Restart  Phase #:18   [PDB1] Files:1    Time: 0s
*****************   Catproc Views   ****************
Parallel Phase #:19   [PDB1] Files:32   Time: 37s
Restart  Phase #:20   [PDB$SEED] Files:1   Time: 34s
Restart  Phase #:20   [PDB1] Files:1    Time: 0s
Serial   Phase #:21   [PDB$SEED] Files:3    Time: 0s
Serial   Phase #:21   [PDB1] Files:3    Time: 14s
Restart  Phase #:22   [PDB$SEED] Files:1    Time: 14s
Restart  Phase #:22   [PDB1] Files:1    Time: 0s
Parallel Phase #:23   [PDB$SEED] Files:24    Time: 0s
Parallel Phase #:23   [PDB1] Files:24   Time: 460s
Restart  Phase #:24   [PDB1] Files:1   Time: 460s
Restart  Phase #:24   [PDB$SEED] Files:1    Time: 1s
Parallel Phase #:25   [PDB1] Files:12    Time: 1s
Parallel Phase #:25   [PDB$SEED] Files:12   Time: 168s
Restart  Phase #:26   [PDB1] Files:1    Time: 0s
Serial   Phase #:27   [PDB1] Files:1    Time: 0s
Serial   Phase #:28   [PDB1] Files:3   Time: 172s
Restart  Phase #:26   [PDB$SEED] Files:1    Time: 0s
Serial   Phase #:27   [PDB$SEED] Files:1    Time: 0s
Serial   Phase #:28   [PDB$SEED] Files:3    Time: 29s
Serial   Phase #:29   [PDB1] Files:1    Time: 0s
Restart  Phase #:30   [PDB1] Files:1    Time: 0s
***************   Catproc CDB Views   **************
Serial   Phase #:31   [PDB1] Files:1    Time: 25s
Serial   Phase #:29   [PDB$SEED] Files:1    Time: 0s
Restart  Phase #:30   [PDB$SEED] Files:1    Time: 0s
***************   Catproc CDB Views   **************
Serial   Phase #:31   [PDB$SEED] Files:1    Time: 1s
Restart  Phase #:32   [PDB1] Files:1    Time: 0s
Serial   Phase #:34   [PDB1] Files:1    Time: 0s
*****************   Catproc PLBs   *****************
Serial   Phase #:35   [PDB1] Files:288    Time: 1s
Restart  Phase #:32   [PDB$SEED] Files:1    Time: 0s
Serial   Phase #:34   [PDB$SEED] Files:1    Time: 0s
*****************   Catproc PLBs   *****************
Serial   Phase #:35   [PDB$SEED] Files:288  Time: 147s
Serial   Phase #:36   [PDB$SEED] Files:1    Time: 0s
Restart  Phase #:37   [PDB$SEED] Files:1  Time: 147s
Serial   Phase #:36   [PDB1] Files:1    Time: 0s
Restart  Phase #:37   [PDB1] Files:1    Time: 1s
Serial   Phase #:38   [PDB$SEED] Files:2    Time: 1s
Serial   Phase #:38   [PDB1] Files:2    Time: 10s
Restart  Phase #:39   [PDB1] Files:1    Time: 10s
Restart  Phase #:39   [PDB$SEED] Files:1    Time: 0s
***************   Catproc DataPump   ***************
Serial   Phase #:40   [PDB1] Files:3    Time: 0s
***************   Catproc DataPump   ***************
Serial   Phase #:40   [PDB$SEED] Files:3    Time: 84s
Restart  Phase #:41   [PDB1] Files:1    Time: 0s
******************   Catproc SQL   *****************
Parallel Phase #:42   [PDB1] Files:13    Time: 91s
Restart  Phase #:41   [PDB$SEED] Files:1    Time: 0s
******************   Catproc SQL   *****************
Parallel Phase #:42   [PDB$SEED] Files:13   Time: 189s
Restart  Phase #:43   [PDB1] Files:1    Time: 0s
Parallel Phase #:44   [PDB1] Files:11   Time: 8s
Restart  Phase #:45   [PDB1] Files:1    Time: 0s
Parallel Phase #:46   [PDB1] Files:3    Time: 3s
Restart  Phase #:47   [PDB1] Files:1    Time: 1s
*************   Final Catproc scripts   ************
Serial   Phase #:48   [PDB1] Files:1    Time: 6s
Restart  Phase #:49   [PDB1] Files:1    Time: 0s
**************   Final RDBMS scripts   *************
Serial   Phase #:50   [PDB1] Files:1   Time: 202s
Restart  Phase #:43   [PDB$SEED] Files:1    Time: 0s
Parallel Phase #:44   [PDB$SEED] Files:11    Time: 6s
************   Upgrade Component Start   ***********
Serial   Phase #:51   [PDB1] Files:1    Time: 1s
Restart  Phase #:52   [PDB1] Files:1    Time: 1s
**********   Upgrading Java and non-Java   *********
Serial   Phase #:53   [PDB1] Files:2   Time: 11s
Restart  Phase #:45   [PDB$SEED] Files:1    Time: 0s
Parallel Phase #:46   [PDB$SEED] Files:3    Time: 4s
Restart  Phase #:47   [PDB$SEED] Files:1    Time: 0s
*************   Final Catproc scripts   ************
Serial   Phase #:48   [PDB$SEED] Files:1    Time: 12s
Restart  Phase #:49   [PDB$SEED] Files:1    Time: 0s
**************   Final RDBMS scripts   *************
Serial   Phase #:50   [PDB$SEED] Files:1    Time: 5s
************   Upgrade Component Start   ***********
Serial   Phase #:51   [PDB$SEED] Files:1    Time: 1s
Restart  Phase #:52   [PDB$SEED] Files:1    Time: 0s
**********   Upgrading Java and non-Java   *********
Serial   Phase #:53   [PDB$SEED] Files:2    Time: 290s
*****************   Upgrading XDB   ****************
Restart  Phase #:54   [PDB1] Files:1    Time: 1s
Serial   Phase #:56   [PDB1] Files:3    Time: 268s
*****************   Upgrading XDB   ****************
Restart  Phase #:54   [PDB$SEED] Files:1    Time: 0s
Serial   Phase #:56   [PDB$SEED] Files:3    Time: 6s
Serial   Phase #:57   [PDB1] Files:3    Time: 3s
Parallel Phase #:58   [PDB1] Files:9    Time: 5s
Serial   Phase #:57   [PDB$SEED] Files:3    Time: 3s
Parallel Phase #:59   [PDB1] Files:25    Time: 4s
Parallel Phase #:58   [PDB$SEED] Files:9    Time: 3s
Parallel Phase #:59   [PDB$SEED] Files:25   Time: 7s
Serial   Phase #:60   [PDB1] Files:4   Time: 6s
Serial   Phase #:60   [PDB$SEED] Files:4    Time: 14s
Serial   Phase #:61   [PDB1] Files:1    Time: 0s
Serial   Phase #:62   [PDB1] Files:31    Time: 12s
Serial   Phase #:61   [PDB$SEED] Files:1    Time: 0s
Serial   Phase #:62   [PDB$SEED] Files:31   Time: 12s
Serial   Phase #:63   [PDB$SEED] Files:1    Time: 0s
Parallel Phase #:64   [PDB$SEED] Files:6   Time: 13s
Serial   Phase #:63   [PDB1] Files:1    Time: 0s
Parallel Phase #:64   [PDB1] Files:6    Time: 6s
Serial   Phase #:65   [PDB1] Files:2    Time: 6s
Serial   Phase #:65   [PDB$SEED] Files:2    Time: 32s
Serial   Phase #:66   [PDB1] Files:3    Time: 32s
Serial   Phase #:66   [PDB$SEED] Files:3    Time: 35s
****************   Upgrading ORDIM   ***************
Restart  Phase #:67   [PDB$SEED] Files:1    Time: 0s
Serial   Phase #:69   [PDB$SEED] Files:1    Time: 36s
****************   Upgrading ORDIM   ***************
Restart  Phase #:67   [PDB1] Files:1    Time: 0s
Serial   Phase #:69   [PDB1] Files:1    Time: 2s
Parallel Phase #:70   [PDB$SEED] Files:2    Time: 2s
Parallel Phase #:70   [PDB1] Files:2    Time: 38s
Serial   Phase #:71   [PDB$SEED] Files:1    Time: 38s
Serial   Phase #:71   [PDB1] Files:1    Time: 58s
Restart  Phase #:72   [PDB1] Files:1    Time: 0s
Parallel Phase #:73   [PDB1] Files:2    Time: 60s
Restart  Phase #:72   [PDB$SEED] Files:1    Time: 0s
Parallel Phase #:73   [PDB$SEED] Files:2    Time: 22s
Serial   Phase #:74   [PDB1] Files:2    Time: 21s
Serial   Phase #:74   [PDB$SEED] Files:2    Time: 1s
*****************   Upgrading SDO   ****************
Restart  Phase #:75   [PDB1] Files:1    Time: 1s
Serial   Phase #:77   [PDB1] Files:1    Time: 2s
*****************   Upgrading SDO   ****************
Restart  Phase #:75   [PDB$SEED] Files:1    Time: 0s
Serial   Phase #:77   [PDB$SEED] Files:1    Time: 51s
Serial   Phase #:78   [PDB$SEED] Files:1    Time: 51s
Serial   Phase #:78   [PDB1] Files:1    Time: 4s
Restart  Phase #:79   [PDB$SEED] Files:1    Time: 4s
Restart  Phase #:79   [PDB1] Files:1    Time: 1s
Serial   Phase #:80   [PDB$SEED] Files:1    Time: 1s
Serial   Phase #:80   [PDB1] Files:1    Time: 6s
Restart  Phase #:81   [PDB1] Files:1    Time: 6s
Restart  Phase #:81   [PDB$SEED] Files:1    Time: 0s
Parallel Phase #:82   [PDB1] Files:3    Time: 0s
Parallel Phase #:82   [PDB$SEED] Files:3    Time: 88s
Restart  Phase #:83   [PDB$SEED] Files:1    Time: 1s
Serial   Phase #:84   [PDB$SEED] Files:1    Time: 90s
Restart  Phase #:83   [PDB1] Files:1    Time: 0s
Serial   Phase #:84   [PDB1] Files:1    Time: 8s
Restart  Phase #:85   [PDB$SEED] Files:1    Time: 0s
Serial   Phase #:86   [PDB$SEED] Files:1    Time: 7s
Restart  Phase #:85   [PDB1] Files:1    Time: 1s
Serial   Phase #:86   [PDB1] Files:1    Time: 9s
Restart  Phase #:87   [PDB$SEED] Files:1    Time: 0s
Parallel Phase #:88   [PDB$SEED] Files:4    Time: 9s
Restart  Phase #:87   [PDB1] Files:1    Time: 0s
Parallel Phase #:88   [PDB1] Files:4    Time: 84s
Restart  Phase #:89   [PDB$SEED] Files:1    Time: 83s
Restart  Phase #:89   [PDB1] Files:1    Time: 0s
Serial   Phase #:90   [PDB$SEED] Files:1    Time: 0s
Serial   Phase #:90   [PDB1] Files:1    Time: 1s
Restart  Phase #:91   [PDB$SEED] Files:1    Time: 1s
Serial   Phase #:92   [PDB$SEED] Files:2    Time: 2s
Restart  Phase #:91   [PDB1] Files:1    Time: 0s
Serial   Phase #:92   [PDB1] Files:2    Time: 26s
Restart  Phase #:93   [PDB1] Files:1    Time: 0s
Serial   Phase #:94   [PDB1] Files:1    Time: 27s
Restart  Phase #:93   [PDB$SEED] Files:1    Time: 1s
Restart  Phase #:95   [PDB1] Files:1    Time: 0s
Serial   Phase #:94   [PDB$SEED] Files:1    Time: 0s
*******   Upgrading ODM, WK, EXF, RUL, XOQ   *******
Serial   Phase #:96   [PDB1] Files:1    Time: 1s
Restart  Phase #:95   [PDB$SEED] Files:1    Time: 0s
*******   Upgrading ODM, WK, EXF, RUL, XOQ   *******
Serial   Phase #:96   [PDB$SEED] Files:1    Time: 20s
Restart  Phase #:97   [PDB1] Files:1    Time: 19s
Restart  Phase #:97   [PDB$SEED] Files:1    Time: 0s
***********   Final Component scripts    ***********
Serial   Phase #:98   [PDB1] Files:1    Time: 0s
***********   Final Component scripts    ***********
Serial   Phase #:98   [PDB$SEED] Files:1    Time: 2s
*************   Final Upgrade scripts   ************
Serial   Phase #:99   [PDB1] Files:1    Time: 2s
*************   Final Upgrade scripts   ************
Serial   Phase #:99   [PDB$SEED] Files:1    Time: 99s
*******************   Migration   ******************
Serial   Phase #:100  [PDB$SEED] Files:1    Time: 1s
***   End PDB Application Upgrade Pre-Shutdown   ***
Serial   Phase #:101  [PDB$SEED] Files:1    Time: 1s
Serial   Phase #:102  [PDB$SEED] Files:1    Time: 3s
Serial   Phase #:103  [PDB$SEED] Files:1    Time: 105s
*******************   Migration   ******************
Serial   Phase #:100  [PDB1] Files:1    Time: 1s
***   End PDB Application Upgrade Pre-Shutdown   ***
Serial   Phase #:101  [PDB1] Files:1    Time: 1s
Serial   Phase #:102  [PDB1] Files:1    Time: 3s
Serial   Phase #:103  [PDB1] Files:1    Time: 28s
*****************   Post Upgrade   *****************
Serial   Phase #:104  [PDB$SEED] Files:1    Time: 36s
*****************   Post Upgrade   *****************
Serial   Phase #:104  [PDB1] Files:1    Time: 5s
****************   Summary report   ****************
Serial   Phase #:105  [PDB1] Files:1    Time: 1s
***   End PDB Application Upgrade Post-Shutdown   **
Serial   Phase #:106  [PDB1] Files:1    Time: 1s
Serial   Phase #:107  [PDB1] Files:1    Time: 1s
Serial   Phase #:108  [PDB1] Files:1     Time: 0s

------------------------------------------------------
Phases [0-108]         End Time:[2019_01_19 12:57:32]
Container Lists Inclusion:[PDB1] Exclusion:[NONE]
------------------------------------------------------

Grand Total Time: 2518s [PDB1]

 LOG FILES: (/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542/catupgrdpdb1*.log)

Upgrade Summary Report Located in:
/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542/upg_summary.log

Total Upgrade Time:          [0d:0h:41m:58s]
   Time: 355s
****************   Summary report   ****************
Serial   Phase #:105  [PDB$SEED] Files:1    Time: 1s
***   End PDB Application Upgrade Post-Shutdown   **
Serial   Phase #:106  [PDB$SEED] Files:1    Time: 1s
Serial   Phase #:107  [PDB$SEED] Files:1    Time: 4s
Serial   Phase #:108  [PDB$SEED] Files:1     Time: 0s

------------------------------------------------------
Phases [0-108]         End Time:[2019_01_19 13:03:11]
Container Lists Inclusion:[PDB$SEED] Exclusion:[NONE]
------------------------------------------------------

Grand Total Time: 2857s [PDB$SEED]

 LOG FILES: (/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542/catupgrdpdb_seed*.log)

Upgrade Summary Report Located in:
/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542/upg_summary.log

Total Upgrade Time:          [0d:0h:47m:37s]

     Time: 1790s For CDB$ROOT
     Time: 2867s For PDB(s)

Grand Total Time: 4657s

 LOG FILES: (/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542/catupgrd*.log)

Upgrade Summary Report Located in:
/u01/app/oracle/product/18.0.0/dbhome_1/cfgtoollogs/cdb1/upgrade20190119114542/upg_summary.log

Grand Total Upgrade Time:    [0d:1h:17m:37s]
$

Check out the "upg_summary.log" file, and if anything looks wrong, check out the associated "catupgrd*.log" file. At this point I do a shutdown and startup to make sure everything is running in the correct mode. Also make sure the user-defined PDBs are open before doing the post upgrade steps.

sqlplus / as sysdba <<EOF
shutdown immediate;
startup;

column name format A30
select name, open_mode from v\$pdbs;

exit;
EOF

Perform Post-Upgrade Actions

The output from the "preupgrade.jar" lists a number of post-upgrade recommendations. Some must be manually applied. Others are incorporated into the "postupgrade_fixups.sql" script. In the following example we will only run the "postupgrade_fixups.sql" script. Remember, in a multitenant database we must run the post-upgrade actions on the root, seed and all user-defined pluggable databases.

$ORACLE_HOME/perl/bin/perl \
    -I$ORACLE_HOME/perl/lib \
    -I$ORACLE_HOME/rdbms/admin \
    $ORACLE_HOME/rdbms/admin/catcon.pl \
    -l /u01/app/oracle/cfgtoollogs/${ORACLE_SID}/preupgrade/ \
    -b postup_cdb1 \
    /u01/app/oracle/cfgtoollogs/${ORACLE_SID}/preupgrade/postupgrade_fixups.sql

Assuming you didn't hit any problems along the way, your database is upgraded and ready to go now.

Final Steps

Edit the "/etc/oratab" file, correcting the Oracle home path.

From:
cdb1:/u01/app/oracle/product/12.2.0.1/db_1:Y
To:
cdb1:/u01/app/oracle/product/18.0.0/dbhome_1:Y

If you are using APEX or ORDS, you probably want to validate them (validate APEX, validate ORDS).

For more information see:

Hope this helps. Regards Tim...

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