TNS-12551: TNS:missing keyword
Cause: The supplied connect descriptor is missing one or more TNS keywords.
Action: Check the syntax, and ensure all required keywords are present.
Category Archives: TNS Database Error Messages
TNS-12550: TNS:syntax error
TNS-12550: TNS:syntax error
Cause: The supplied connect descriptor contains illegal syntax.
Action: Check the syntax of the connect descriptor in TNSNAMES.ORA.
TNS-12549: TNS:operating system resource quota exceeded
TNS-12549: TNS:operating system resource quota exceeded
Cause: The current user has exceeded the allotted resource assigned in the operating system.
Action: Acquire more operating system resources, or perform a different function.
TNS-12548: TNS:incomplete read or write
TNS-12548: TNS:incomplete read or write
Cause: A data send or receive failed. This message is not normally visible to the user.
Action: For further details, turn on tracing and re-execute the operation. If the error persists, contact Oracle Support Services.
TNS-12547: TNS:lost contact
TNS-12547: TNS:lost contact
Cause: Partner has unexpectedly gone away, usually during process startup.
Action: Investigate partner application for abnormal termination. On an Interchange, this can happen if the machine is overloaded.
TNS-12546: TNS:permission denied
TNS-12546: TNS:permission denied
Cause: User has insufficient privileges to perform the requested operation.
Action: Acquire necessary privileges and try again.
TNS-12545: Connect failed because target host or object does not exist
TNS-12545: Connect failed because target host or object does not exist
Cause: The address specified is not valid, or the program being connected to does not exist.
Action: Ensure the ADDRESS parameters have been entered correctly; the most likely incorrect parameter is the node name. Ensure that the executable for the server exists (perhaps "oracle" is missing). If the protocol is TCP/IP, edit the TNSNAMES.ORA file to change the host name to a numeric IP address and try again.
TNS-12544: TNS:contexts have different wait/test functions
TNS-12544: TNS:contexts have different wait/test functions
Cause: Two protocol adapters have conflicting wait/test functions. This message is not normally visible to the user.
Action: For further details, turn on tracing and re-execute the operation. If the error persists, contact Oracle Support Services.
TNS-12543: TNS:destination host unreachable
TNS-12543: TNS:destination host unreachable
Cause: Contact cannot be made with remote party.
Action: Make sure the network driver is functioning and the network is up.
TNS-12542: TNS:address already in use
TNS-12542: TNS:address already in use
Cause: Specified listener address is already being used.
Action: Start your listener with a unique address.