EM 12c: Repetitive TNS-12508 Errors Logged for a Listener Target after Enterprise Manager 12c Cloud Control Database Plug-in Upgrade to 12.1.0.3 or Higher (Doc ID 1596633.1)

Last updated on JUNE 29, 2017

Applies to:

Enterprise Manager for Oracle Database - Version 12.1.0.3.0 to 12.1.0.5.0 [Release 12.1]
Information in this document applies to any platform.

Symptoms

After upgrading the EM 12c Database plug-in from 12.1.0.2 to 12.1.0.3 or higher,  listener targets are alerted about TNS-12508 errors in listener.log each day.

Changes

 

Cause

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