Oracle Database Errors or Warnings from Error ORA-12533 to ORA-12542


ORA-12533: TNS:illegal ADDRESS parameters
Cause: An illegal set of protocol adapter parameters was specified. In some cases, this error is returned when a connection cannot be made to the protocol transport.
Action: Verify that the destination can be reached using the specified protocol. Check the parameters within the ADDRESS section of TNSNAMES.ORA. Legal ADDRESS parameter formats may be found in the Oracle operating system specific documentation for your platform. Protocols that resolve names at the transport layer (such as DECnet object names) are vulnerable to this error if not properly configured or names are misspelled.
ORA-12534: TNS:operation not supported
Cause: An internal function received a request to perform an operation that is not supported (on this machine).
Action: Not normally visible to the user. For further details, turn on tracing and reexecute the operation. If error persists, contact Oracle Customer Support.
ORA-12535: TNS:operation timed out
Cause: The requested operation could not be completed within the time out period.
Action: Look at the documentation on the secondary errors for possible remedy. See SQLNET.LOG to find secondary error if not provided explicitly. Turn on tracing to gather more information.

ORA-12536: TNS:operation would block
Cause: An internal operation did not commence because to do so would block the current process and the user has requested that operations be non-blocking.
Action: None needed; this is an information message.
ORA-12537: TNS:connection closed
Cause: “End of file” condition has been reached; partner has disconnected.
Action: None needed; this is an information message.
ORA-12538: TNS:no such protocol adapter
Cause: The protocol adapter requested (by way of the “(PROTOCOL=..)” keyword-value pair in a TNS address) is unknown. If the supplied address is typographically correct then the protocol adapter is not installed.
Action: Install the protocol adapter or correct typographically error, as appropriate. Note: if the supplied address was derived from resolving the service name, check the address in the appropriate file (TNSNAMES.ORA, LISTENER.ORA or SQLNET.ORA).

ORA-12539: TNS:buffer over- or under-flow
Cause: Buffer too small for incoming data or too large for outgoing data.
Action: This restriction (which is associated with CONNECT DATA) is not normally visible to the user. For further details, turn on tracing and reexecute the operation; contact Oracle Customer Support.
ORA-12540: TNS:internal limit restriction exceeded
Cause: Too many TNS connections open simultaneously.
Action: Wait for connections to close and re-try.
ORA-12541: TNS:no listener
Cause: The connection request could not be completed because the listener is not running.
Action: Ensure that the supplied destination address matches one of the addresses used by the listener – compare the TNSNAMES.ORA entry with the appropriate LISTENER.ORA file (or TNSNAV.ORA if the connection is to go by way of an Interchange). Start the listener on the remote machine.
ORA-12542: TNS:address already in use
Cause: Specified listener address is already being used.
Action: Start your listener with a unique address.

Above are list of Oracle Database Errors or Warnings from Error ORA-12533 to ORA-12542 received while performing certain operation against Oracle Database or related products.

What are Oracle Database Error Messages?

Oracle Error Messages may be returned while using products which are part of Oracle Database.  Each Oracle Database Error or Warning Message mentioned above contains the Warning or Error Message Statement, a short explanation of the probable causes of the Error message, and a recommended action.

Hope this was helpful.

SQLServerF1 Team
Information about Oracle Database Error Messages or Warning Messages on Windows and Linux Operating Systems.


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