Oracle DBA, How To, Error, Cause and Action

ORA-12502: TNS:listener received no CONNECT_DATA from client

ORA-12502: TNS:listener received no CONNECT_DATA from client


Cause:


No CONNECT_DATA was passed to the listener.



Action:


Check that the service name resolved from TNSNAMES.ORA has the CONNECT_DATA component of the connect descriptor.

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