Database Tuning (MOSC)

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SQL Profiles : Migration

in Database Tuning (MOSC) 4 comments

We are migrating our database environment from 12.1 EE Windows (3 databases) to a new 19c EE RAC Linux cluster (3 nodes). New RAC environment has 50% faster CPUs and ~100 additional cores.

Question:

We have created many SQL Profiles in our current environment to aid in query performance. The SQL is generated dynamically within our app (minimal use of stored procs!). Should we migrate the SQL Profiles to the new environment? Is there any harm in doing so? Is it best to let 19c generate it's own execution plans due to the version change (12.1 vs. 19c), extreme CPU upgrade, and OS upgrade (Linux vs. Windows)?

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