Oracle Error ORA-12211: TNS:needs PREFERRED_CMANAGERS entry in TNSNAV.ORA Oracle 14 Views 0 Min Read Oracle Error Message ORA-12211: TNS:needs PREFERRED_CMANAGERS entry in TNSNAV.ORA Reason for the Error TNSNAV.ORA does not have a PREFERRED_CMANAGERS defined. Solution Add a PREFERRED_CMANAGERS entry to the TNSNAV.ORA file. Related admin November 21, 2024
