teits wrote:No, I think FSFO did not occur on standby.
Did fast-start failover occurred on the standby DB?
what is the status of the standby when startup?
SELECT PROTECTION_MODE,DATABASE_ROLE,FS_FAILOVER_STATUS, SWITCHOVER_STATUS FROM V$DATABASE;
without OBSERVER do you experience the problem?
2. make sure packet is not dropping.(ping)
3. make sure your vmware host has enough resources to avoid delay in processing!
in others words, check your vmware performace.(likely cause)
4. configure the observer on another server(preferably not virtual server)
if not resolved, get more information in drc*.log
CKPT wrote:Primary and standby are located in the same site. The 2 servers are configured in the same timezone.
Where are the locations of primary and standby, any timezone differences? Please check below MOS Notes they might help to you.