Performance Degradation (Log File Sync) after OS Upgrade from OL6 to OL7
(Doc ID 2531078.1)
Last updated on APRIL 17, 2023
Applies to:Oracle Database - Enterprise Edition - Version 22.214.171.124 and later
Information in this document applies to any platform.
There is no other change at storage or database level.
- Log file sync is visible in the AWR report after OS upgrade from OL6 to OL7
- No change in DB load - or call/commit ratio
- Log writer trace shows below:
*** 2019-04-09 10:15:03.943
Warning: log write elapsed time 1442ms, size 1KB
*** 2019-04-09 10:15:09.443
Warning: log write elapsed time 3236ms, size 80KB
*** 2019-04-09 10:15:22.146
Warning: log write elapsed time 1373ms, size 115KB
OS was upgraded from OL 6.7 to OL 7.5
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