The prerequisites are listed in the AIX installation manuals. See:http://docs.oracle.com/cd/E11882_01/ins ... 14/toc.htmhttp://docs.oracle.com/cd/E11882_01/ins ... 60/toc.htmhttp://docs.oracle.com/cd/E11882_01/ins ... 32/toc.htm
As far as ASM setup, Oracle provide very few recommendations:http://docs.oracle.com/cd/E11882_01/ins ... m#CHDJBEDC
There are a range of ways you can set things up and all are supported. The ASM manual has some very basic recommendations, listed here:http://www.oracle-base.com/articles/10g ... isk_groups
- In most cases you will only need two disk groups (DATA and FRA), where DATA holds all database related files and FRA holds the fast recovery area, including multiplexed copies on online redo logs and controlfiles. Typically, the FRA disk group will be twice the size of the DATA disk group, since it must hold all backups.
- Oracle recommend a minimum of 4 LUNs per disk group, with LUNs using hardware RAID and external redundancy if possible.
- All LUNs within a disk group should be the same size and have the same performance characteristics.
- LUNs should be made up from disks dedicated to Oracle, not shared with other applications.
Some people put the voting disk and ocr into a small additional disk group (makeing 3 disk groups in total), but you don't have to.