Oracle Database Errors or Warnings from Error ORA-12554 to ORA-12566

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ORA-12554: TNS:current operation is still in progress
Cause: An internal operation is still in progress.
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-12555: TNS:permission denied
Cause: User has insufficient privileges to perform the requested operation.
Action: Acquire necessary privileges and try again.
ORA-12556: TNS:no caller
Cause: TNS detected an incoming connect request but there was no caller.
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-12557: TNS:protocol adapter not loadable
Cause: On some platforms (such as OS/2) protocol adapters are loaded at run-time. If the shared library (or DLL) for the protocol adapter is missing or one of its supporting libraries is missing then this error is returned.
Action: For further details, turn on tracing and reexecute the operation. The trace file will include the name of the shared library (or DLL) that could not be loaded.
ORA-12558: TNS:protocol adapter not loaded
Cause: On some platforms (such as OS/2) protocol adapters are loaded at run-time. If the shared library (or DLL) for the protocol adapter has not been loaded, then this error is returned.
Action: For further details, turn on tracing and reexecute the operation. The trace file will have the name of the shared library (or DLL) that has not been loaded.
ORA-12560: TNS:protocol adapter error
Cause: A generic protocol adapter error occurred.
Action: Check addresses used for proper protocol specification. Before reporting this error, look at the error stack and check for lower level transport errors. For further details, turn on tracing and reexecute the operation. Turn off tracing when the operation is complete.

ORA-12561: TNS:unknown error
Cause: A generic protocol error occurred.
Action: For further details, turn on tracing and reexecute the operation.
ORA-12562: TNS:bad global handle
Cause: Internal error – bad ‘gbh’ argument passed to TNS from caller. System may have been linked with old libraries.
Action: Not normally visible to the user, contact Oracle Customer Support.
ORA-12564: TNS:connection refused
Cause: The connect request was denied by the remote user (or TNS software).
Action: Not normally visible to the user. For further details, turn on tracing and reexecute the operation.
ORA-12566: TNS:protocol error
Cause: An unexpected TNS protocol error has occurred.
Action: For further details, turn on tracing and reexecute the operation. If error persists, contact Oracle Customer Support.

Above are list of Oracle Database Errors or Warnings from Error ORA-12554 to ORA-12566 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.

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

 

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