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JBoss 5.0 behavior of non-tx-datasource committed or NOT?
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created by <a href="http://community.jboss.org/people/Thunder.Farmer">Thunder Lei</a> in <i>Datasource Configuration</i> - <a href="http://community.jboss.org/message/560360#560360">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi there,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>When I look at the JBoss documents, there is a definition for non-tx-datasource, it said:"<a class="jive-link-anchor-small"> This element is used to specify the (<code class="literal" style="font-size: 0.9em; font-family: 'liberation mono', 'Bitstream vera mono', monospace; white-space: nowrap;">org.jboss.resource.connectionmanager</code>)<code class="literal" style="font-size: 0.9em; font-family: 'liberation mono', 'Bitstream vera mono', monospace; white-space: nowrap;">NoTxConnectionManager</code> service configuration. <code class="literal" style="font-size: 0.9em; font-family: 'liberation mono', 'Bitstream vera mono', monospace; white-space: nowrap;">NoTxConnectionManager</code> is a JCA connection manager with no transaction support. </a>".</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>As my understanding to this definition, any changes made by using non-tx-datasource should NOT be committed into the underlying database, but according my investigation, that's NOT it. If non-tx-datasource works with xa-datasource, the both will commit or rollback.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Could you guys pls give some clarification on this?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>What I did to verify non-tx-datasource behavior is: I have two session beans, ReadOnlyBean and XABean, which in turn refer to two JPA entity managers, and the entity managers refer to two datasouce, one is non-tx-datasource and xa-datasource.</p><p>These two datasources are connecting different databases.</p><p>I double checked the JDBC drivers used by these two datasources, one is xa and another is non xa.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Then I have the third session bean FacadeBean. In one method of  this facade bean, I call ReadOnlyBean and XABean to update database.</p><p>All the methods are given the transaction attribute as @TransactionAttribute(TransactionAttributeType.REQUIRED).</p><p>I call ReadOnlyBean first, then call the XABean.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>If I throw EJBException in the XABean, seems both transactions are rolled back.</p><p>If there is no EJBException, both changes are committed into underlying database.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>any comments are appreciated.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Thanks&Regards,</p><p>Thunder</p></div>
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