change data source to oracle error

I want to move h2 to oracle. I can add the oracle data source successful using datasources ui, but when i restart the bam, the data source is still h2. I find the datasources.properties is not changed. so i edit the file synapse.datasources=bamoracle synapse.datasources.bamh2.type=BasicDataSource synapse.datasources.bamh2.driverClassName=oracle.jdbc.driver.OracleDriver synapse.datasources.bamh2.url=jdbc:oracle:thin:@***.***.***.***:orcl synapse.datasources.bamh2.username=*** synapse.datasources.bamh2.password=*** when i restart the bam, the error is: [2011-07-06 16:17:28,044] ERROR {org.wso2.carbon.dataservices.core.DBInOutMessageReceiver} -  Error in in-out message receiver DS Fault Message: Error in pre-fetching data DS Code: DATABASE_ERROR Nested Exception:- javax.xml.stream.XMLStreamException: DS Fault Message: Error in 'SQLQuery.processNormalQuery' DS Code: DATABASE_ERROR Source Data Service:- Name: BAMConfigurationDS Location: /BAMConfigurationDS.dbs Description: N/A Default Namespace: http://ws.wso2.org/dataservice Current Request Name: getServersForServerType Current Params: {serverType=PullServer} Nested Exception:- DS Fault Message: The data source is nonexistent DS Code: UNKNOWN_ERROR         at org.wso2.carbon.dataservices.core.engine.DSOMDataSource.prefetchData(DSOMDataSource.java:88)         at org.wso2.carbon.dataservices.core.dispatch.SingleDataServiceRequest.processSingleRequest(SingleDataServiceRequest.java:95)         at org.wso2.carbon.dataservices.core.dispatch.SingleDataServiceRequest.processRequest(SingleDataServiceRequest.java:76)         at org.wso2.carbon.dataservices.core.dispatch.DataServiceRequest.dispatch(DataServiceRequest.java:275)         at org.wso2.carbon.dataservices.core.DataServiceProcessor.dispatch(DataServiceProcessor.java:50)         at org.wso2.carbon.dataservices.core.DBInOutMessageReceiver.invokeBusinessLogic(DBInOutMessageReceiver.java:52)         at org.apache.axis2.receivers.AbstractInOutSyncMessageReceiver.invokeBusinessLogic(AbstractInOutSyncMessageReceiver.java:42)         at org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:110)         at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)         at org.apache.axis2.transport.local.LocalTransportReceiver.processMessage(LocalTransportReceiver.java:166)         at org.apache.axis2.transport.local.LocalTransportReceiver.processMessage(LocalTransportReceiver.java:79)         at org.apache.axis2.transport.local.LocalTransportSender.finalizeSendWithToAddress(LocalTransportSender.java:102)         at org.apache.axis2.transport.local.LocalTransportSender.invoke(LocalTransportSender.java:77)         at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:443)         at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:406)         at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:229)         at org.apache.axis2.client.OperationClient.execute(OperationClient.java:165)         at org.wso2.carbon.bam.services.stub.bamconfigurationds.BAMConfigurationDSStub.getServersForServerType(BAMConfigurationDSStub.java:6375)         at org.wso2.carbon.bam.common.clients.BAMConfigurationDSClient.getServersforServerType(BAMConfigurationDSClient.java:152)         at org.wso2.carbon.bam.core.persistence.BAMPersistenceManager.getMonitoredServersByType(BAMPersistenceManager.java:847)         at org.wso2.carbon.bam.core.collector.DataCollector.run(DataCollector.java:66)         at java.util.TimerThread.mainLoop(Timer.java:512) I have already run the bam_schema_oracle.sql, the h2 can't be moved?