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ORA-16664: unable to receive the result from a database

Oracle Database Tips by Burleson Consulting

May 20, 2016

Question: What do I resolve this data guard error? 

DGM-17016: failed to retrieve status for database "XXX"
ORA-16664: unable to receive the result from a database

Is there any known issues with two Data Guard brokers running on same server on teo homes? This configuration works OK in 12c but fails in 11g.

Answer:  The oerr utility shows this for the ORA-16664 error:

ORA-16664: unable to receive the result from a database

Cause:  During execution of a command, a database in the Data Guard broker configuration failed to return a result.

Action:  Check the Data Guard broker logs for the details of the failure. Ensure network communication is working properly amongst the members of the configuration. Fix any possible network problems and reissue the command.

As we see, you need to check your Data Guard Broker log to see the actual cause for this error.

The real error is likely related to the network, and you should follow these steps to test network connectivity.

One user fixed the issue by registering the 11g and 12c instances on one single listener in the 12c home and removing the 11g listener. Now everything works fine.

Also, this query can give details on the ORA-16667 error:

DGMGRL> show show database verbose 'XXX';

col severity  for a15
col message   for a70
col timestamp for a20
select
   severity,
   error_code,
   to_char(timestamp,'DD-MON-YYYY HH24:MI:SS') "timestamp",
   message
from
   v$dataguard_status
where
   dest_id=2;

Because you indicate that it works OK in 12c, you should open a SR on MOSC and see if you may be hitting a bug.  Other possible causes for the ORA-16667 error include.

- A logon trigger was preventing the connection from the standby database during a switchover. Fix: disable the logon trigger in primary database.  (MOSC id 1530881.1)

- Check the non default port used in connect string of both primary and standby(tnsnames.ora). MOSC id 1228797.

- The protection level does not match: 

select protection_mode, protection_level from v$database;

References:

MOSC - Data Guard Broker reported ORA-16664 (MOSC Doc ID 1390892.1)

 


   
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Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals.  Feel free to ask questions on our Oracle forum.

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