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Streams Propagation Process : Ora 12154 After Reboot with Transparent Application Failover TAF configured (Doc ID 311021.1)

Last updated on MAY 11, 2022

Applies to:

Oracle Database - Enterprise Edition - Version 9.0.1.0 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.


Symptoms

With a Streams configuration that works fine, replication is working both
ways.  Transparent Application Failover (TAF) is also configured.  

The DBLink setup for the propagation of the messages points to an entry in the tnsnames.ora which is configured for TAF.

After a server reboot, a ORA-12154 TNS:could not resolve service name appears in the LAST_ERROR_MSG of DBA_QUEUE_SCHEDULES view.  After the 16 failures, the propagation process fails (this is normal).

 

Cause

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