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CMAN & Service Registration Failures : Registration Fails With: TNS-12536 & CMAN Error Log Shows: SERVICE_DIED * 1183 (Doc ID 1990895.1)

Last updated on MARCH 31, 2022

Applies to:

Oracle Net Services - Version to [Release 11.2 to 18.1]
Information in this document applies to any platform.


The CMAN or Connection Manager is not showing registrations for services after the database is upgraded to 12c.


This is a new installation of 12c database or ANY  environment where CMAN of an earlier release is present.
The version of CMAN or Connection Manager is older than the database.


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