TNS-12601: TNS:information flags check failed
Cause: The TNS information flags set by the process prior to connection negotiation were not present after the negotiation was finished. This is an internal error.
Action: Enable tracing and attempt to repeat the error. If it occurs again, contact Oracle Support Services.
TNS-12600: TNS: string open failed
Cause: The creation of a string in Oracle NLS format failed. This is an internal error.
Action: Enable tracing and attempt to repeat the error. If it occurs again, contact Oracle Support Services.
TNS-12599: TNS:cryptographic checksum mismatch
Cause: The data received is not the same as the data sent.
Action: Attempt the transaction again. If the error persists, check (and correct) the integrity of your physical connection.
TNS-12598: TNS:banner registration failed
Cause: The registration of a product banner with the Oracle server failed.
Action: Enable tracing and attempt to repeat the error. If it occurs again, contact Oracle Support Services.
TNS-12597: TNS:connect descriptor already in use
Cause: Illegal use of connect descriptor. This is an internal error. 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.
TNS-12596: TNS:internal inconsistency
Cause: TNS has detected an internal inconsistency. This message is not normally visible to the user.
Action: For further details, turn on tracing and re-execute the operation and contact Oracle Support Services.
TNS-12595: TNS:no confirmation
Cause: TNS is unable to get requested confirmation acknowledgment from remote partner. 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.
TNS-12593: TNS:no registered connection
Cause: An attempt to solicit network event activity has failed because no connections are registered for event notification. 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.
TNS-12592: TNS:bad packet
Cause: An ill-formed packet has been detected by the TNS software.
Action: For further details, turn on tracing and re-execute the operation. If the error persists, contact Oracle Support Services.
TNS-12591: TNS:event signal failure
Cause: The TNS software is unable to signal an event occurrence.
Action: For further details, turn on tracing and re-execute the operation. If the error persists, contact Oracle Support Services.