ORA-7445 [keswxCheckActive] and/or ORA-7445 [keswxDumpPlanEntry] Errors with High 'library cache lock' Waits
(Doc ID 2928784.1)
Last updated on MARCH 03, 2023
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 to 18.104.22.168.0 [Release 12.2 to 19]
Information in this document applies to any platform.
Errors such as the following are noted in the alert log:
At the same time, the instance suffered from high library cache lock waits, e.g. from an AWR report:
Top 10 Foreground Events by Total Wait Time
|Event||Waits||Total Wait Time (sec)||Avg Wait||% DB time||Wait Class|
|library cache lock||31,365||1M||32.25 s||93.2||Concurrency|
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