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> ORA-16665, dg config hang after applying patch 24006111 & 24315821
Pranav Kumar
post Aug 16 2017, 08:10 AM
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Hello Forum,

DG config is not working after applying oracle patches 24006111 & 24315821
show configuration commands works on standby but hangs on primary db.

DGMGRL> show configuration;

Configuration - emo_dg

Protection Mode: MaxPerformance
db_primaryvip - Primary database
db_standbyvip - Physical standby database

Fast-Start Failover: DISABLED

Configuration Status:
ORA-16665: timeout waiting for the result from a database
DGM-17017: unable to determine configuration status

Any suggestions for solving the issue.

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post Aug 17 2017, 07:10 AM
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Hi Pranav, and welcome to the forum!

If you are certain that the patch application caused the Ora-16665 error, then you know the root cause of the problem, right?

I would open a service request on MOSC:


First, see "Data Guard Broker Switchover fails With ORA-16665 using Active Data Guard" (MOSC Doc ID 1323789.1). When you get an ORA-16665 with Data Guard you need to check to see if you have 'AFTER LOGON' or 'BEFORE SHUTDOWN' triggers.

The Ora-16665 signals a network configuration error.

Here are some good notes on the Ora-16665 error:


Please let know the solution when you find it.

Good luck!

Hope this helps . . .

Donald K. Burleson
Oracle Press author
Author of Oracle Tuning: The Definitive Reference
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