Increased Waits for 'log file sync' and 'LGWR wait for redo copy' Following Failover with MTTR Advisory set to ON
(Doc ID 1968974.1)
Last updated on FEBRUARY 14, 2019
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
- Following failover to identical hardware, there is an increase in "log file sync" and "LGWR wait for redo copy"
- MTTR Advisory is set to the ON state.
- Alert log shows log file sync scheduling delay:
The host crashed due to a hardware issue and failed over to another cluster. MTTR Advisory is switched from READY to the ON state.
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