This is the first post on daily bugs encountered by me. Got to keep track of them. I believe I’ve ran into this bug years before and now it happened again.
And the bug is:
Databases affected: at least 10.2.0.4, 22.214.171.124
set statistics_level=all ,
then db cache advisor is turned on behind the scenes,
then database crashes (after restart in my case) with core dump ORA-7445 [kcbsacc].
Oracle bug and metalink article is:
“Bug 9903826 – ORA-7445 [kcbsacc] and PMON crashing with ORA-7445 [kcbsslc] Causing Instance to Terminate [ID 9903826.8]”
set db_cache_advice = off
Principles violated (by me as DBA of course):
– keep it simple principle. If features can be turned off – turn them off. Start db in “safe mode” (windows talk)
– memory fails, read the (bleeped) manual principle: Oracle has got “aggregated parameters”: turn one ON and then you need to turn a few of them OFF to keep the system clean.