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How to analyze and resolve ORA-16146? (Doc ID 1073217.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Database - Enterprise Edition - Version 10.1.0.2 to 11.2.0.4 [Release 10.1 to 11.2]
Information in this document applies to any platform.
***Checked for relevance on 10-Dec-2015***

Purpose

Step by Step document to analyze and resolve

ORA-16146: standby destination control file enqueue unavailable.

 
ORA-16146 errors indicate that we timed out in an attempt to obtain a control file transaction lock on a standby. This can happen on a very busy standby host/primary host, and does not itself indicate a problem. As long as there are no other side-effects this error can be ignored.

Please go through the steps below:

Troubleshooting Steps

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In this Document
Purpose
Troubleshooting Steps
 1. Analyze the circumstances of the ORA-16146
 2. Does the ORA-16146 refer to the standby or primary database?
 3. Please verify the Data Guard configuration on primary and standby database:
 4. Have you applied the recommended patches?
 5.  Are the databases located on SUN-platforms?
 6. If  we need to analyze the issue further, please enable following events:
 7. New behavior in 11.2
References

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