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 JULY 29, 2024

Applies to:

Enterprise Manager for Oracle Database - Version 12.1.0.4.0 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:

So:

- 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

	To view full details, sign in with your My Oracle Support account.
	Don't have a My Oracle Support account? Click to get started!

In this Document

Symptoms

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.