My application uses 3 different datasources all going to the same database. One with XA support is used via the JNDI name by the entity manager configured in persistence.xml. The other two are no-tx-datasources. I am able to access certain aspects using the datasources however as soon as I try to make a change via entity manager I get the error shown below. Any suggestions on what I am doing wrong. The same application works fine using SQL Server 2005. anonymous wrote : | 4:47:40,170 INFO [ConnectionProviderFactory] Initializing connection provider: org.hibernate.ejb.connection.InjectedDataSourceConnectionProvider | 4:47:40,170 INFO [InjectedDataSourceConnectionProvider] Using provided datasource | 4:47:40,342 INFO [SettingsFactory] RDBMS: Oracle, version: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Production | ith the Partitioning, OLAP, Data Mining and Real Application Testing options | 4:47:40,342 INFO [SettingsFactory] JDBC driver: Oracle JDBC driver, version: 10.2.0.4.0 | 4:47:40,389 INFO [Dialect] Using dialect: org.hibernate.dialect.Oracle10gDialect | 4:47:40,404 INFO [TransactionFactoryFactory] Transaction strategy: org.hibernate.ejb.transaction.JoinableCMTTransactionFactory | 4:47:40,404 INFO [TransactionManagerLookupFactory] instantiating TransactionManagerLookup: org.hibernate.transaction.JBossTransactionManagerLookup | 4:47:40,420 INFO [TransactionManagerLookupFactory] instantiated TransactionManagerLookup and then later anonymous wrote : | 14:47:48,920 INFO [AjpProtocol] Starting Coyote AJP/1.3 on ajp-127.0.0.1-8009 | 14:47:48,951 INFO [Server] JBoss (MX MicroKernel) [4.2.3.GA (build: SVNTag=JBoss_4_2_3_GA date=200807181439)] Started in 1m:4s:969ms | 14:48:03,342 WARN [PageNotFound] No mapping for [/diagnostics/spring/j_security_check] in DispatcherServlet with name 'thunderhead' | 14:48:35,092 WARN [JDBCExceptionReporter] SQL Error: 0, SQLState: null | 14:48:35,092 ERROR [JDBCExceptionReporter] Transaction is not active: tx=TransactionImple < ac, BasicAction: -3f57fdd7:cf6:4a155b48:d1 status: ActionStatus.ABORT_ONLY >; - nested throwable: (javax.resource.ResourceException: Transaction is not active: tx=TransactionImple < ac, BasicAction: -3f57fdd7 | :cf6:4a155b48:d1 status: ActionStatus.ABORT_ONLY >) | 14:48:35,092 INFO [DefaultLoadEventListener] Error performing load command | org.hibernate.exception.GenericJDBCException: Cannot open connection | at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:103) | at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:91) | at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) | at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:29) | at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:426) | at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:144) | at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:139) | at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1547) | at org.hibernate.loader.Loader.doQuery(Loader.java:673) | at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236) | at org.hibernate.loader.Loader.loadEntity(Loader.java:1860) | at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:48) | at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:42) | at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3044) | at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:395) | at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:375) | at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:139) | at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:195) | at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:103) | at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:878) | at org.hibernate.impl.SessionImpl.get(SessionImpl.java:815) | at org.hibernate.impl.SessionImpl.get(SessionImpl.java:808) View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4232512#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...