Category Archives: TNS Database Error Messages

TNS-12662: proxy ticket retrieval failed

oracle

TNS-12662: proxy ticket retrieval failed
Cause: The authentication adapter used by SQL*Net failed to retrieve the credentials needed to authenticate a database link.
Action: Enable tracing to determine the exact error.

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TNS-12661: Protocol authentication to be used

oracle

TNS-12661: Protocol authentication to be used
Cause: The SQL*Net authentication service has determined that the SQL*Net transport protocol in use is to be utilized to authenticate a user's identity.
Action: This error is used solely to communicate information between the authentication service and the SQL*Net session layer and should not be visible to the user. If the error is seen, contact Oracle Support Services.

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TNS-12660: Encryption or crypto-checksumming parameters incompatible

oracle

TNS-12660: Encryption or crypto-checksumming parameters incompatible
Cause: One side of the connection specified "REQUIRED" for encryption or crypto-checksumming, while the other side specified "REJECTED".
Action: Change the "REQUIRED" side to "REQUESTED" if the you want encryption or crypto-checksumming to be optional, or change the "REJECTED" side to "ACCEPTED" if you do not want the service to be optional.

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TNS-12659: Error received from other process

oracle

TNS-12659: Error received from other process
Cause: An error was received by one or more services from the process on the other side of the connection.
Action: Enable tracing to determine the exact error(s). The error(s) is (are) not returned directly because an error generated by a server may not make sense on the client side and vice-versa.

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TNS-12658: ANO service required but TNS version is incompatible

oracle

TNS-12658: ANO service required but TNS version is incompatible
Cause: A client process that is running an earlier version of TNS attempted to connect but the connection failed because the server process required that an ANO service (authentication, encryption, and so on) be used.
Action: Relink the calling executable and retry the connection or eliminate the requirement that the service be used on the server side.

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TNS-12657: No algorithms installed

oracle

TNS-12657: No algorithms installed
Cause: The near side of the connection required the use of a service (either encryption or checksumming) when no algorithms for that service were installed.
Action: Remove the "ON" requirement for that service.

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TNS-12656: Cryptographic checksum mismatch

oracle

TNS-12656: Cryptographic checksum mismatch
Cause: The cryptographic checksum received with a packet of incoming data did not match the checksum computed by the receiving end. This indicates that the packet was tampered with or otherwise corrupted in transit.
Action: Look for sources of data corruption, perhaps including deliberate tampering.

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TNS-12655: Password check failed

oracle

TNS-12655: Password check failed
Cause: The authentication service being used was unable to verify the provided password.
Action: Enable tracing to determine the exact error.

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TNS-12654: Authentication conversion failed

oracle

TNS-12654: Authentication conversion failed
Cause: The authentication service was unable to convert the credentials of a user from the format specific to the format into the Oracle format.
Action: Enable tracing to determine the exact error.

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TNS-12653: Authentication control function failed

oracle

TNS-12653: Authentication control function failed
Cause: The control function utilized by the authentication service driver failed.
Action: Enable tracing to determine the exact error.

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