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Error: ORA-16647: could not start more than one observer
Although observer is not started receiving the following error while starting the observer
[W000 01/03 12:44:30.72] Failed to start the Observer.
Error: ORA-16647: could not start more than one observer
DGMGRL> show configuration verbose;
..................................................................
..................................................................
Fast-Start Failover: DISABLED
Threshold: 300 seconds
Target: ORCL1S
Observer: host_observer
Lag Limit: 30 seconds (not in use)
Shutdown Primary: TRUE
Auto-reinstate: TRUE
Observer Reconnect: (none)
Observer Override: FALSE
Configuration Status:
SUCCESS
show configuration verbose still showing observer hostname.
Solution:
Stop the observer from dgmgrl utility and then try to start it again
dgmgrl /
DGMGRL for Linux: Version 12.1.0.2.0 - 64bit Production
Copyright (c) 2000, 2013, Oracle. All rights reserved.
Welcome to DGMGRL, type "help" for information.
Connected as SYSDG.
DGMGRL> stop observer;
Done.
DGMGRL> start observer;
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