Let's say the following error is occurring when attempting to make a connection to a JDBC data source.

DSRA0010E: SQL State = 66000, Error Code = 12,514

This error will often include additional details. In this example, there is some issue with the listener.

ORA-12514, TNS:listener does not currently know of service requested in connect descriptor

AVOID TROUBLE

Restarting the deployment manager or node server should NOT resolve this issue.

This error often means that the JDBC data source URL is incorrect. In this example, the data source URL is jdbc:oracle:thin:@example.com:123. If this URL is incorrect, DSRA0010E will be returned.