Q

Initialization parameters for tuning a Peoplesoft app on Oracle 10g

We are starting to upgrade to Oracle 10g and support a PeopleSoft application on AIX5L. Which initialization parameters do you consider important for tuning purposes?

We are starting to upgrade to Oracle 10g and support a PeopleSoft application on AIX5L. Which initialization parameters do you consider important for tuning purposes?
Some important ones are the size of your log buffer, and the sizes of your various SGA components (shared pool, database buffer cache). With 10g, you can set SGA_MAX_SIZE and SGA_TARGET, and Oracle will allocate SGA_MAX_SIZE bytes of shared memory on startup, then divide SGA_TARGET bytes of shared memory among the SGA components dynamically based on need. Similarly, setting PGA_AGGREGATE_TARGET will allow Oracle to allocate PGA memory among user sessions.

SESSION_CACHED_CURSORS can help avoid even soft parses if the same SQL is run many times per session.

I also suggest that you use automatic undo management.

This was first published in January 2006

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