In this scenario, the communication between Oracle Weblogic and Oracle GridLink data source is not using JDBC connections. So it cannot be monitored by the SQLAgent of the Java Agent.
How can we monitor connection information between Oracle Weblogic and Oracle GridLink data source using the CA APM Java Agent ?
The data can be obtained from Weblogic MBeans. This is a suggestion of the filter to obtain the data:
When the above suggestion does not help, use alternative tools like JConsole and/or run the application in test with an empty JMX filter to find most suitable metrics.