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AIX: Database Slowness After Upgrade to 19c When LMS Processes Are More Than 24 (Doc ID 2874756.1)

Last updated on JULY 26, 2022

Applies to:

Oracle Database - Enterprise Edition - Version 19.3.0.0.0 to 19.15.0.0.0 [Release 19]
IBM AIX on POWER Systems (64-bit)

Symptoms

Slow database startup observe after upgrade Real Application Cluster environment to 19c. Additionally, AWR report indicates top wait with wait events like 'ges inquiry response','enq: US – contention' & 'enq: TX – index contention'. This is observed especially in environments where SGA > 100gb and LMS processes more than 24 

Changes

Upgrade of RAC database to 19c 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References

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