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What is the root cause of oracle thread bootstrap?

edited Nov 14, 2023 5:24PM in Database Tuning (MOSC) 1 commentAnswered

Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Version 19.20.0.0.0

I'm constantly being alerted by OEM on this DB for "Metrics Database Time Spent Waiting (%) is at ### for event class Other".

In most of the cases these alerts are related to Other Wait Event "oracle thread bootstrap" and it seems to be originated by system background processes like CJQ0, MMON or LGWR.

Regardless of any metric configuration on OEM to minimize the alerts, I need to understand what exactly is causing this wait event and what actions can be taken to solve it.

I have searched for information on this matter and there seems none to be available or just very poor information.

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