How to Solve :
Oracle database error code ORA-12502 – TNS:listener received no CONNECT_DATA from client
Oracle Database Error Code ORA-12502 Description :
TNS:listener received no CONNECT_DATA from client
Error Cause:
No CONNECT_DATA was passed to the listener.
How to Solve :
Check that the service name resolved from TNSNAMES.ORA has the CONNECT_DATA component of the connect descriptor.
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