adop fails with "ORA-12516: TNS:listener could not find available handler with matching protocol stack"

(Doc ID 2105049.1)

Last updated on MARCH 08, 2017

Applies to:

Oracle Applications DBA - Version 12.2 and later
Information in this document applies to any platform.

Symptoms

 Online patching fails with the error:

  ORA-12516: TNS:listener could not find available handler with matching protocol stack

Cause

Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms