ORA-12218: TNS:unacceptable network configuration data

admin

ORA-12218: TNS:unacceptablenetwork configuration data
Cause: Poorly formed network configuration data. For example,a PREFERRED_
CMANAGERS entry may have an incorrect CMANAGER_NAME in the client's
TNSNAV.ORA file. Or an Interchange downtime parameter (TIMEOUT_
INTERVAL) on the Navigator may be set to zero in INTCHG.ORA.
Action: Checkthe entries in TNSNAV.ORA and the Interchange configuration
files and correct them. If necessary, talk with your network administrator to
determine if the specified Interchanges (Connection Managers) are available and
properly configured. Use the Oracle Network Manager to generate the
configuration files if necessary.