DB Lookup Error

Dear All,

I am getting following Error in the DB Lookup:

Error: com.sap.engine.services.dbpool.exceptions.BaseSQLException: ResourceException in method ConnectionFactoryImpl.getConnection(): com.sap.engine.services.connector.exceptions.BaseResourceException: Cannot open resource(Managed Connection) with LocalTransaction support or add a second one in the same transaction, for component "webContainer/applications/sap.com/TestDB/TestDB" in application "sap.com/TestDB".

I followed exactly as told in this Blog Please Help

/people/william.li/blog/2007/03/30/using-jdbc-connection-pool-in-xi-message-mapping

Please Help

Regards,

Prakash