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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 JANUARY 06, 2020

Applies to:

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


The terms used in this case are described in teh online Oracle documentaion here:

Enterprise Manager Cloud Administration Guide
12c Release 5
Chapter 12 Enabling the DBaaS Cloud
12.5 Provision a Container Database for PDB as a Service



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


- If SID is kept as <CDB SID>.<DOMAIN_NAME>, the connection to CDB works but connection to PDB fails. 

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


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