Category Archives: TNS Database Error Messages

TNS-12620: TNS:requested characteristic not available

oracle

TNS-12620: TNS:requested characteristic not available 
Cause: The connect request failed because a requested transport characteristic could not be supported by the remote TNS software. 
Action: If appropriate, re-execute with reduced requirements. 

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TNS-12619: TNS:unable to grant requested service

oracle

TNS-12619: TNS:unable to grant requested service
Cause: The connect request failed because requested service could not be provided by the local TNS software.
Action: If appropriate, re-execute with reduced service requirements.

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TNS-12618: TNS:versions are incompatible

oracle

TNS-12618: TNS:versions are incompatible
Cause: The two machines are running incompatible versions of TNS.
Action: Check the version numbers, and upgrade the machine with the smaller one.

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TNS-12617: TNS:bad ‘what’ type

oracle

TNS-12617: TNS:bad 'what' type
Cause: The operation failed because the type of data specified is unknown. 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.

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TNS-12616: TNS:no event signals

oracle

TNS-12616: TNS:no event signals
Cause: The TNS software is unable to enable event signals. 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.

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TNS-12615: TNS:preempt error

oracle

TNS-12615: TNS:preempt error
Cause: A request to service an event failed because no event notification has yet been posted. 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.

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TNS-12612: TNS:connection is busy

oracle

TNS-12612: TNS:connection is busy
Cause: Attempted operation failed because it conflicts with an on-going action or status of the connection. 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.

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TNS-12611: TNS:operation is not portable

oracle

TNS-12611: TNS:operation is not portable
Cause: Attempted operation is not portable. 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.

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TNS-12604: TNS: Application timeout occurred

oracle

TNS-12604: TNS: Application timeout occurred
Cause: The operation was aborted because it did not complete within the specified allotted time interval.
Action: This is an error which does not normally appear at the high level. The action to take is application specific, and is detailed in the higher level error description.

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TNS-12602: TNS: Connection Pooling limit reached

oracle

TNS-12602: TNS: Connection Pooling limit reached
Cause: The operation failed because maximum active current connections has been reached. It may not be a real error when the Connection Pooling feature is enabled. It is possible that the application later re-issues the operation and successfully grabs the connection pool slot and proceeds.
Action: This is an internal error. Enable tracing and attempt to repeat the error. If it occurs again, then contact Oracle Support Services.

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