How to resolve __pm error : jdbc/DatasourceName__pm
How to resolve error : jdbc/DatasourceName__pm
1.Make sure you got the Name of right persistance unit.
2.Make sure you got the Datasource name and Derby url correct.
3.Glassfish-resources.xml file should have proper details , else your glassfish server will not be able to connect to your jdbcresource pool via your datasource name.
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