Fast-Start Failover May Fail if Primary Nodes Crash One After Another
(Doc ID 1995640.1)
Last updated on FEBRUARY 03, 2019
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 to 18.104.22.168 [Release 11.2]
Information in this document applies to any platform.
If all instances of a primary crash and there is any delay in when each instance goes down with respect to the other instances, a Data Guard environment configured for MAXIMUM AVAILABLITY mode can become UNSYNCHRONIZED.
For example, let's say with a 2-node RAC primary, instance BOSTON1 goes down at 11:23:48. Then at 11:24:20, instance BOSTON2 crashes. This would result in standby becoming unsynchronized.
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