Oracle Error ORA-12524: TNS:listener could not resolve HANDLER_NAME given in connect descriptor

Oracle Error Message

ORA-12524: TNS:listener could not resolve HANDLER_NAME given in connect descriptor

Reason for the Error

The HANDLER_NAME in the CONNECT_DATA was not found in the listener’s tables for the specified SERVICE_NAME and INSTANCE_NAME.

Solution

Check to make sure that the HANDLER_NAME specified is correct.