EM Cloud Control Connection to PDB fails with Error: ORA-12523, TNS:listener could not find instance appropriate for the client connection (Doc ID 2124711.1)

Last updated on MARCH 08, 2017

Applies to:

Enterprise Manager for Oracle Database - Version 12.1.0.4.0 and later
Information in this document applies to any platform.

Symptoms

EM connects to Container database successfully.
But connection to Pluggable database fails with following error:

So:

- If SID is kept as cdbbp.us.oracle.com, the connection to CDB works but connection to PDB fails. 

- If SID is kept as cddbp, the connection to PDB works but connection to CDB fails

Cause

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