sample Datasource name for Query Single row/Query for multiple rows as XML services

Hi,
What is the input I should give in the "Datasource name" property in
Query Single row/Query for multiple rows as XML services. Can anyone
provide me an example for the same? I am using weblogic server and
oracle database.

When I enter the query(select NAME from TABLE where USERID=1;) in SQL
statement info editor and click the "Test" button am getting the
following error in Test Results field - "Exception: Internal error..
Cause: ALC-DSC-000-000: com.adobe.idp.dsc.DSCRuntimeException:
Internal error." Is this caused because of the connection problems?

Thanks.
kripa