Oracle® Database 11g / 12c / 18c error codes ORA-12211: TNS:needs PREFERRED_CMANAGERS entry in TNSNAV.ORA

ORA-12211: TNS:needs PREFERRED_CMANAGERS entry in TNSNAV.ORA

Oracle Error Code: ORA-12211

Cause: TNSNAV.ORA does not have a PREFERRED_CMANAGERS defined.

Action: Add a PREFERRED_CMANAGERS entry to the TNSNAV.ORA file.