Cannot start a global transaction. A LocalTransactionContainment is already

Question

Getting 'javax.transaction.NotSupportedException: java.lang.IllegalStateException: Cannot start a global transaction. A LocalTransactionContainment is already active with work.' while running the following code using XA datasource.
Setup: WAS 5.0.2, TopLink 9.0.4.4, Oracle JDBC Driver (XA), Oralce9i database flatform, using external transaction controller.
Code:
SessionManager sm = SessionManager.getManager();
Server serverSession = (Server)sm.getSession("PersistenceUnitTest");
ClientSession clientSession = serverSession.acquireClientSession();
int key = 1003;
Customer customerPK = new Customer();
customerPK.setId(new Integer(key));
ReadObjectQuery query =
new ReadObjectQuery(customerPK.getClass());
query.setSelectionKey(clientSession.keyFromObject(customerPK));
Customer customer = null;
try {
customer = (Customer)clientSession.executeQuery(query);
} catch (Exception e) {
clientSession.release();
InitialContext ctx = new InitialContext();
UserTransaction userTxn = (UserTransaction) ctx.lookup("java:comp/UserTransaction");
try {
userTxn.begin();
userTxn.rollback();
} catch (Exception e) {
e.printStackTrace();
} finally {
clientSession.release();
Trace:
2005.03.14 01:04:57.452--ServerSession(863114877)--Thread[Servlet.Engine.Transports : 0,5,main]--client acquired
2005.03.14 01:04:57.462--ServerSession(863114877)--Thread[Servlet.Engine.Transports : 0,5,main]--Connection(1731483245)--SELECT PERSON_TYPE, ID, GENDER, VERSION, LAST_NAME, FIRST_NAME, MIDDLE_INITIAL, HOME_ADDRESS_ID, PREFERRED_CUSTOMER, DISCOUNT_RATE, CONTACT_NUMBER, WORK_ADDRESS_ID FROM USER04.PERSON WHERE ((ID = ?) AND (PERSON_TYPE = ?))
     bind => [1003, C]
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R javax.transaction.NotSupportedException: java.lang.IllegalStateException: Cannot start a global transaction. A LocalTransactionContainment is already active with work.
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at com.ibm.ejs.jts.jta.UserTransactionImpl.begin(UserTransactionImpl.java:173)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at com.ford.it.persistence.impl.toplink.unittest.GlobalTransactionTest.testXA(GlobalTransactionTest.java:808)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at java.lang.reflect.Method.invoke(Native Method)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at junit.framework.TestCase.runTest(TestCase.java:154)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at junit.framework.TestCase.runBare(TestCase.java:127)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at org.apache.cactus.ServletTestCase.runCactusTest(ServletTestCase.java:295)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at org.apache.cactus.ServletTestCase.runBare(ServletTestCase.java:263)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at org.apache.cactus.server.AbstractWebTestCaller.doTest(AbstractWebTestCaller.java:156)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at org.apache.cactus.server.AbstractWebTestController.handleRequest_aroundBody0(AbstractWebTestController.java:130)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at org.apache.cactus.server.AbstractWebTestController.handleRequest_aroundBody1$advice(AbstractWebTestController.java:158)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at org.apache.cactus.server.AbstractWebTestController.handleRequest(AbstractWebTestController.java)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at org.apache.cactus.server.ServletTestRedirector.doPost_aroundBody2(ServletTestRedirector.java:138)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at org.apache.cactus.server.ServletTestRedirector.doPost_aroundBody3$advice(ServletTestRedirector.java:158)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at org.apache.cactus.server.ServletTestRedirector.doPost(ServletTestRedirector.java)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at org.apache.cactus.server.ServletTestRedirector.doGet_aroundBody0(ServletTestRedirector.java:109)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at org.apache.cactus.server.ServletTestRedirector.doGet_aroundBody1$advice(ServletTestRedirector.java:158)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at org.apache.cactus.server.ServletTestRedirector.doGet(ServletTestRedirector.java)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
[3/14/05 13:04:57:502 EST] 17d31642 SystemErr R      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:948)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:530)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:176)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:79)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:201)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:182)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:610)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:431)
[3/14/05 13:04:57:512 EST] 17d31642 SystemErr R      at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:593)
[3/14/05 13:04:57:492 EST] 17d31642 LocalTransact E WLTC0018E: Cannot begin a LocalTransactionContainment. A LocalTransactionContainment is already active.
2005.03.14 01:04:57.512--ClientSession(1258968685)--Thread[Servlet.Engine.Transports : 0,5,main]--client released
If we perform a query on a thread and then subsequently start a UserTransaction, we get the above failure on the begin() method of the UserTransaction
Did anyone experience this before? Your inputs/comments are greatly appreciated.
Haiwei

Answer 1

James, thanks very much for your response.
I hope you did not mis-understand my previous posts in this thread.
In the example I provided, the database query was outside the UserTransaction. I could successfully perform rollback on an XA db connection after the query was executed. The rollback call cleans up the resources used in the local transaction that was created for the query; thus allows the UserTransaction to start following the query.
The local transaction was created for the query because autoCommit property was false for XA datasource connections. If I set autoCommit to true after getting the connection from XA datasource, the query will finish with the commit of the local transaction that's created for the query. The WAS code appears to work correctly.
If using non-XA datasource, the local transaction created for the query will be committed because the autoCommit is default to true for the non-XA connections.
While using TopLink, there seems to be two options for solving my problem (which was stated at the begining of this thread):
1) after the execution of a TopLink query, trap the connection.close() event and call the connection.rollback() before closing the connection to clean up the resources used in the local transaction; or
2) trap the getConnection() event, and call conneciton.setAutoCommit(true) on the connection if the query is not part of the TopLink transaction or UserTransaction.
I studied and experimented with the TopLink code. Option 1) is not do-able. After the execution of a TopLink qeury, TopLink's PreReleaseConnection event does not contain the connection that was used in the query. The connection was closed in the executeCall method of DatabaseAccessor.
The postConnect event seems to provide some possibility of implementing option 2). However, when TopLink executes a query (at least, the ReadObjectQuery that I used in my testing), after getting a connection from DatabaseLogin, the executeCall method in DatabaseAccessoor never triggers the postConnect event.
I posted a seperate note on the issue. Here is the link: postConnect event .
or use a non-JTA DataSource for the TopLink session read login.<We use WAS connection pooling. Did you mean using non-XA datasource for TopLik read?
your own TopLink ExternalConnectionPool subclass to workaround the issue<Could you elaborate the details? Or where can I find more information on the technique?
Your help would be greatly appreciated.
Haiwei
Haiwei