TNS-12652: String truncated
Cause: Not enough memory was allocated for a string so it had to be truncated
Action: If it is not a problem that the string is truncated, then it is not an error. Otherwise, call the routine that reported the error again with a larger string buffer.
TNS-12651: Encryption or data integrity algorithm unacceptable
Cause: The algorithm the server chose to use for encryption or data integrity was not one of the choices acceptable to the client. This is either the result of an internal error, of a network data transmission error, or of deliberate tampering with the transmitted data.
Action: For further details, turn on tracing, re-execute the operation, and contact Oracle Support Services.
TNS-12650: No common encryption or data integrity algorithm
Cause: The client and server have no algorithm in common for either encryption or data integrity or both.
Action: Choose sets of algorithms that overlap. In other words, add one of the client's algorithm choices to the server's list or vice versa.
TNS-12649: Unknown encryption or data integrity algorithm
Cause: A SQL*Net list-of-algorithms parameter included an algorithm name that was not recognized.
Action: Either remove that algorithm name, correct it if it was misspelled, or install the driver for the missing algorithm.
TNS-12648: Encryption or data integrity algorithm list empty
Cause: A SQL*Net list-of-algorithms parameter was empty; for example, "()".
Action: Change the list to contain the name of at least one installed algorithm, or remove the list entirely if every installed algorithm is acceptable.
TNS-12647: Authentication required
Cause: The parameter that controls whether authentication is required was set to true, but the executable does not have an authentication service linked in.
Action: Either re-link the executable with an authentication service adapter or disable the parameter.
TNS-12646: Invalid value specified for boolean parameter
Cause: The value specified for a parameter was set to a value other than true/false or on/off.
Action: Correct the value of the parameter.
TNS-12645: Parameter does not exist
Cause: A SQLNET.ORA parameter from which a value was needed does not exist.
Action: Set the parameter in the parameter file.
TNS-12644: Authentication service initialization failed
Cause: The routine called to initialize the authentication adapter failed.
Action: Enable tracing to determine the exact error. A likely cause is that memory is exhausted.
TNS-12643: Client received internal error from server
Cause: The client process received an error from the server that indicated that an internal SQL*Net native services error had occurred.
Action: Enable tracing on both processes and attempt to re-create the problem. If successful in recreating the problem, contact Oracle Support Services.