The test connection operation failed for data source sample on server nodeagent at node with the following exception: java.sql.SQLException: Listener refused the connection with the following error: ORA-12514

 Error: 

         Below error may  come when u configure oracle data source in WebSphere Application Server

                                                                     The test connection operation failed for data source sample on server nodeagent at node with the following exception: java.sql.SQLException: Listener refused the connection with the following error: ORA-12514, TNS:listener does not currently know of service requested in connect descriptor DSRA0010E: SQL State = 66000, Error Code = 12,514. View JVM logs for further details.

Ans:
         Check the URL of oracle in your Data source configuration.



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