To PDB or not to PDB : The final decision

After yesterday’s to PDB or not to PDB post, I decided the answer was “to PDB”. Here’s what I did…

  • Installed the Oracle 12c (12.1.0.2) software. There is an installation article here, but all I had to do was a software-only installation because the OS already met all the prerequisites because of the existing 11.2.0.3 installation.
  • Upgrade the existing 11.2.0.3 instance. See here. I could have stopped at this point, but as I said I decided “to PDB”. :)
  • Created an empty CDB instance on the box using “dbca”.
  • Created a new PDB as a remote clone of the non-CDB instance, as described here.
  • Turned off the non-CDB instance.

Job done. So far it’s looking good. I’m going to do some messing about tomorrow to make sure it registers with Cloud Control properly and the backup schedule is sorted. Then I’ll give it to the folks to test their apps against.

Thoughts:

  • I flippin’ love the remote cloning of non-CDBs. I’ve played with it while writing the article about it, but seeing it happen on a real database was really exciting.
  • I think we all realise that this is version 1.1 of the multitenant architecture. The question is, is version 1.1 good enough at this point? The testing will determine that, not my excitement levels.
  • The testing will be based on our use of the DB. We are a small operation with quite simple needs. If we choose to go this route it will be because it is right for us. Depending on your usage, your experience may be different.
  • If things don’t work out with this POC, we will try with the non-CDB instance.

So it was kind-of exciting, fun and scary all rolled into one… :)

Cheers

Tim…