Two jdbc connections in one transaction

Question

Hi<br>
          <br>
          In a method of a container managed ejb session bean I have two jdbc connections. I've expected, that they will be in the same transaction, so results of any actions performed with first connection will be visible for the second connection, but it is not. <br>
          I've checked, that there are two sessions at the database, so it seams that there are simply separate transactions. Is it a problem with a ejb-jar.xml (will paste it later), datasource (driver - Oracle Thin non-XA; 1PC selected) or such behaviour can not be achieved in WLS ? <BR>
          <BR>
          regards
          <br>
          <BR><?xml version="1.0" encoding="UTF-8"?>
          <BR>
          <BR><!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
          <BR>
          <BR><ejb-jar >
          <BR>
          <BR>     <description><![CDATA[No Description.]]></description>
          <BR>     <display-name>ConnectionTest1</display-name>
          <BR>     
          <BR>     <enterprise-beans>
          <BR>          <session >
          <BR>               <description><![CDATA[]]></description>
          <BR>               
          <BR>               <ejb-name>ConnectionTest1</ejb-name>
          <BR>               
          <BR>               <home>pl.axit.test.ConnectionTest1Home</home>
          <BR>               <remote>pl.axit.test.ConnectionTest1</remote>
          <BR>     <ejb-class>pl.axit.test.ConnectionTest1Bean</ejb-class>
          <BR>     <session-type>Stateless</session-type>
          <BR>     <transaction-type>Container</transaction-type>
          <BR>     
          <BR>     <resource-ref >
          <BR>          <res-ref-name>jdbc/wowrite</res-ref-name>
          <BR>          <res-type>javax.sql.DataSource</res-type>
          <BR>          <res-auth>Container</res-auth>
          <BR>     </resource-ref>
          <BR>     </session>
          <BR>     </enterprise-beans>     
          <BR>     
          <BR>     <assembly-descriptor>
          <BR>          <container-transaction>
          <BR>               <description/>
          <BR>               <method>
          <BR>                    <description/>
          <BR>                    <ejb-name>ConnectionTest1</ejb-name>
          <BR>                    <method-name>*</method-name>
          <BR>               </method>
          <BR>               <trans-attribute>Required</trans-attribute>
          <BR>          </container-transaction>          
          <BR>
          <BR>     </assembly-descriptor>
          <BR></ejb-jar>

Answer 1

Hi,
          are you using XA transactions? Two separate JDBC Connections treated
          within one transactional context will require two phase commit (via
          Emulation or an XA database driver) Please check the connections
          settings within your datasources.
          Rgds,
          Axel van Lil (LMIS.de)
          Lukas Uruski schrieb:
          > I forgot to add, that in administration console in server_name > Monitoring > JTA parameter "Transactions Total Count" increases by one each time method from previous post is invoked.