Our production Db2 is at V12R1M500, code, cat & function.
Test subsystems (5 of them) now at M509 code & cat, M500 function level.
I have been asked not to roll this into production until next year.
My research to date shows no way to undo the catalog catmaint and clearly states code level must match highest function ever used and highest catalog level, so no way for me to regress.
My understanding is that we can prevent new functions from hitting production, holding all at M500, what risks are there that something else works in test and will not work in production, or worse still, cause an issue that brings production down ?
I am considering rebuilding those lower levels at M500...
That confirms my thoughts, so unless we are needing some new function or PTFs in production, I am going to keep them all at the same level.
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