TNS-03503: Could not initialize NL
Cause: The network library could not be initialized. This is an internal error which should not normally be visible.
Action: Ensure that memory is available to run the application and that there are no other operating system problems, and then attempt the command again.
TNS-03502: Insufficient arguments. Usage: tnsping address [count]
Cause: Some required command-line arguments are missing.
Action: Re-enter the command using the correct arguments.
TNS-03501: OK
Cause: The operation succeeded.
Action: No action necessary.
TNS-02526: server proxy type does not match client type
Cause: The authentication type selected by the server does not match that picked by the client.
Action: Contact Oracle Support Services.
TNS-02525: encryption/crypto-checksumming: self test failed
Cause: The ANO encryption/crypto-checksumming service detected an error while running tests on the active encryption or checksumming algorithm.
Action: Contact Oracle Support Services.
TNS-02524: Authentication: privilege check failed
Cause: An error occurred when the SQL*Net authentication service attempted to verify that a user had a specific database privilege.
Action: This error should not happen normally. Enable tracing and attempt to repeat the error. Contact Oracle Support Services.
TNS-02521: encryption/crypto-checksumming: Diffie-Hellman seed too small
Cause: The sqlnet.crypto_seed parameter in the SQLNET.ORA parameter file for SQL*Net is too small.
Action: Add more randomly-chosen text to it.
TNS-02520: encryption/crypto-checksumming: no Diffie-Hellman seed
Cause: The sqlnet.crypto_seed parameter is missing from the SQLNET.ORA parameters file for SQL*Net.
Action: Add this line to SQLNET.ORA: sqlnet.crypto_seed = "randomly-chosen text"
TNS-02519: no appropriate key-negotiation parameters
Cause: No appropriate key-negotiation parameters are available for the key size requested either by encryption or by crypto- checksumming.
Action: The error is not normally visible. Enable tracing to reproduce the problem and contact Oracle Support Services.
TNS-02518: key negotiation error
Cause: An error occurred while the two sides of the connection were negotiating an encryption or crypto-checksumming key.
Action: The error is not normally visible. If the error persists, enable tracing to reproduce the problem and contact Oracle Support Services.