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

(Doc ID 1596633.1)

Last updated on JUNE 29, 2017

Applies to:

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


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




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