ora -12502

ORA-12502 TNS-12502 TNS:LISTENER RECEIVED NO CONNECT_DATA FROM CLIENT 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. Below is the sample entry of tnsnames.ora:- So for the service name please ensure you have the […]