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https://issues.apache.org/jira/browse/OPENJPA-172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12484280
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Kevin Sutter commented on OPENJPA-172:
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It sounds like WebSphere is working as expected. Since you are attempting to
modify a Connection while a transaction is active, WebSphere is preventing the
action. As you outlined, this would happen with setTransactionIsolation,
setAutoCommit, and a few other settings that would compromise a shared
connection.
You could run with an Unshareable connection, but that's easier said than done
since Shareable connections are the default when accessing via direct JNDI
lookups.
Another idea is to delay the starting of the transaction, but that may be
application-specific. That is, you might be able to work around this situation
in your given application, but that doesn't sound like a general purpose
solution.
What we might have to do is to use a JDBCConnectionSpec when attempting to get
a Connection via the WSDataSource interface. This is very WebSphere specific,
but I'm not sure what else we can do.
I'm surprised that we haven't hit this type of problem with other application
servers. Either the JNDI lookup is returning an Unshareable connection, or
setting the isolation level on Shareable connections is allowed. Neither of
these options is consistent with the expected behavior. Can anyone comment?
I'm trying to figure out if we have a WebSphere-specific situation or a more
genera problem.
Kevin
> DSRA9250E: Operation setTransactionIsolation is not allowed during a global
> transaction for Shareable Connections.
> -------------------------------------------------------------------------------------------------------------------
>
> Key: OPENJPA-172
> URL: https://issues.apache.org/jira/browse/OPENJPA-172
> Project: OpenJPA
> Issue Type: Bug
> Components: jpa
> Affects Versions: 0.9.6
> Environment: Websphere 6.1 for zos and DB2 zos V8
> Reporter: Ritika Maheshwari
> Fix For: 0.9.7
>
>
> My persistence.xml looks like following
> *******************************************************************************************************
> <?xml version="1.0" ?>
> <persistence xmlns="http://java.sun.com/xml/ns/persistence";
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
> version="1.0">
> <persistence-unit name="dwtest" transaction-type="JTA">
> <provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>
> <non-jta-data-source>jdbc/ErwwDS</non-jta-data-source>
> <class>ejb.jpa.test.Customer</class>
> <class>ejb.jpa.test.District</class>
> <class>ejb.jpa.test.Warehouse</class>
> <class>ejb.jpa.test.History</class>
> <class>ejb.jpa.test.Item</class>
> <class>ejb.jpa.test.Neworders</class>
> <class>ejb.jpa.test.Orderline</class>
> <class>ejb.jpa.test.Orders</class>
> <class>ejb.jpa.test.Stock</class>
> <properties>
>
> <property name="openjpa.LockManager" value="pessimistic"/>
> <property name="openjpa.ReadLockLevel" value="read"/>
> <property name="openjpa.WriteLockLevel" value="write"/>
> <property name="openjpa.LockTimeout" value="30000"/>
> <property name="openjpa.FetchBatchSize" value="1" />
> <property name="openjpa.jdbc.TransactionIsolation" value="read-committed" />
> <property name="openjpa.Log" value="DefaultLevel=WARN, Runtime=INFO,
> Tool=INFO,SQL=TRACE"/>
>
> </properties>
> </persistence-unit>
> </persistence>
> *******************************************************************************************************************
> The Orderline entity looks like following
> *************************************************************************************************
> @Entity
> @IdClass(ejb.jpa.test.OrderlineId.class)
> @SequenceGenerator(name="mysequence",sequenceName="ORDER_ID")
> public class Orderline implements Serializable{
>
> @Id
> @GeneratedValue(strategy=GenerationType.SEQUENCE,generator="mysequence")
> java.lang.Integer ol_o_id = null;
> @Id
> java.lang.String ol_d_id = null;
> @Id
> java.lang.String ol_w_id = null;
> @Id
> java.lang.Short ol_number = null;
> java.lang.String ol_i_id = null;
> java.sql.Timestamp ol_delivery_d = null;
> java.lang.String ol_supply_w_id = null;
> java.lang.Short ol_quantity = null;
> java.math.BigDecimal ol_amount = null;
> java.sql.Timestamp itime = null;
> java.lang.String ol_dist_info = null;
> @ManyToOne(fetch=FetchType.LAZY)
> @JoinColumns({
> @JoinColumn(name="ol_o_id", referencedColumnName="o_id"),
> @JoinColumn(name="ol_d_id", referencedColumnName="o_d_id"),
> @JoinColumn(name="ol_w_id", referencedColumnName="o_w_id")
> })
> Orders orders = null;
> @ManyToOne(fetch=FetchType.LAZY)
> @JoinColumns({
> @JoinColumn(name="ol_i_id", referencedColumnName="s_i_id"),
> @JoinColumn(name="ol_supply_w_id", referencedColumnName="s_w_id")
>
> })
> Stock stock = null;
> *************************************************************************************************************************
> Now if I run the following client
> UserTransaction ut = null;
> ClientEJB facade = null;
> EntityManager em = null;
> try {
> Hashtable parms = new Hashtable();
> parms.put( Context.INITIAL_CONTEXT_FACTORY,
> "com.ibm.websphere.naming.WsnInitialContextFactory");
> InitialContext ctx = new InitialContext(parms);
> ut = (UserTransaction) ctx.lookup("java:comp/UserTransaction");
> ut.begin();
> em = getFactory().createEntityManager ();
>
> try {
> OpenJPAEntityManager kem = OpenJPAPersistence.cast (em);
> kem.getFetchPlan().setReadLockMode(LockModeType.WRITE);
> stock = (Stock)kem.find(Stock.class,stockKey);
> kem.getFetchPlan().setReadLockMode(null);
>
> } catch (Exception fe) {}
> try {
>
> Timestamp itime = new
> Timestamp(System.currentTimeMillis());
> Orderline orderLine = new Orderline (districtId,
> warehouseId,
> new Short((short)ol_number),
> itemId,null, itemSupplyWarehouseId,new Short((short)itemQuantity), amount,
> itime, stockDistInfo);
> em.persist(orderLine);
> em.flush();
> ***************************************************************************************************************
> I get the the following stack trace, which appears to happen when we try to
> get the next value from Sequence
> [3/12/07 13:59:06:496 PDT] 00000020 SystemErr R 3073 TRACE
> [WebContainer : 0] openjpa.jdbc.SQL - <t 1503025558, conn 1348751460>
> executing prepstmnt 2134933312 SELECT t0.s_data, t0.s_dist_01, t0.s_dist_02,
> t0.s_dist_03, t0.s_dist_04, t0.s_dist_05, t0.s_dist_06, t0.s_dist_07,
> t0.s_dist_08, t0.s_dist_09, t0.s_dist_10, t0.s_order_cnt, t0.s_quantity,
> t0.s_remote_cnt, t0.s_ytd FROM Stock t0 WHERE t0.s_i_id = ? AND t0.s_w_id = ?
> WITH RS USE AND KEEP UPDATE LOCKS [params=(String) 000111, (String) 0001]
> [3/12/07 13:59:06:498 PDT] 00000020 SystemErr R 3075 TRACE
> [WebContainer : 0] openjpa.jdbc.SQL - <t 1503025558, conn 1348751460> [2 ms]
> spent
> [3/12/07 13:59:06:720 PDT] 00000020 SystemErr R javax.ejb.EJBException:
> ClientEJB: CreateException: OrderLineLocalHome create failed in
> placeNewOrder() of ClientEJB; nested exception is: <0|true|0.9.6-incubating>
> org.apache.openjpa.persistence.PersistenceException: DSRA9250E: Operation
> setTransactionIsolation is not allowed during a global transaction for
> Shareable Connections.
> <0|true|0.9.6-incubating>
> org.apache.openjpa.persistence.PersistenceException: DSRA9250E: Operation
> setTransactionIsolation is not allowed during a global transaction for
> Shareable Connections.
> at
> org.apache.openjpa.jdbc.sql.DBDictionary.newStoreException(DBDictionary.java:3764)
> at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:94)
> at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:80)
> at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:56)
> at
> org.apache.openjpa.jdbc.kernel.AbstractJDBCSeq.next(AbstractJDBCSeq.java:59)
> at org.apache.openjpa.util.ImplHelper.generateValue(ImplHelper.java:159)
> at org.apache.openjpa.util.ImplHelper.generateFieldValue(ImplHelper.java:143)
> at
> org.apache.openjpa.jdbc.kernel.JDBCStoreManager.assignField(JDBCStoreManager.java:554)
> at org.apache.openjpa.util.ApplicationIds.assign(ApplicationIds.java:435)
> at org.apache.openjpa.util.ApplicationIds.assign(ApplicationIds.java:420)
> at
> org.apache.openjpa.jdbc.kernel.JDBCStoreManager.assignObjectId(JDBCStoreManager.java:538)
> at
> org.apache.openjpa.kernel.DelegatingStoreManager.assignObjectId(DelegatingStoreManager.java:131)
> at
> org.apache.openjpa.kernel.StateManagerImpl.assignObjectId(StateManagerImpl.java:471)
> at
> org.apache.openjpa.kernel.StateManagerImpl.preFlush(StateManagerImpl.java:2662)
> at org.apache.openjpa.kernel.PNewState.beforeFlush(PNewState.java:36)
> at
> org.apache.openjpa.kernel.StateManagerImpl.beforeFlush(StateManagerImpl.java:845)
> at org.apache.openjpa.kernel.BrokerImpl.flush(BrokerImpl.java:1865)
> at org.apache.openjpa.kernel.BrokerImpl.flushSafe(BrokerImpl.java:1825)
> at org.apache.openjpa.kernel.BrokerImpl.flush(BrokerImpl.java:1609)
> at
> org.apache.openjpa.kernel.DelegatingBroker.flush(DelegatingBroker.java:959)
> at
> org.apache.openjpa.persistence.EntityManagerImpl.flush(EntityManagerImpl.java:438)
> at helpers.ClientEJB.placeNewOrder(Unknown Source)
> at
> erww.web.ErwwController.performServicesForNewOrder(ErwwController.java:550)
> at erww.web.ErwwController.performTask(ErwwController.java:272)
> at erww.web.ErwwController.doGet(ErwwController.java:85)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
> at
> com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:966)
>
> Any idea why is this happening is this a bug.It appears like that while
> trying to get the next value from Sequence JPA tries to get a connection and
> then on the connection if the isolationLevel is not already READ_COMMITTED it
> tries to set it to READ_COMMITTED and that is where it blows out
> ritika
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