7 Replies Latest reply on Sep 15, 2006 11:44 AM by vakuthota

    userTransaction rollback or commit not working

    luke jedi Newbie

      I have a client program that tried to connect to 2 oracle databases.
      The usertransaction.rollback + commit don't work.

      Apparently from the jboss documentation a distributed transaction can't be starte from inside another VM than the jboss server ?

      If this is noit true how could I use a distributed transaction wit 2 databases and a JMS topic from a client application ?
      Do I have to tweak at some configuration file or something else ?

      Thanks very much for your help...

        • 1. Re: userTransaction rollback or commit not working
          Kevin Conner Master

          Can you please expand on the description of your application? If you are using JBossTS then this should work.

          • 2. Re: userTransaction rollback or commit not working
            luke jedi Newbie

            Hi Kevin,
            I have put my code in a servlet method.
            1) I'm using oracle 9i
            2) in jboss-service.xml i have put the XidFactory pad to true.
            3) in oracle-xml I have decalred 2 datasources. This xml contains:


            <xa-datasource>

            <jndi-name>XAOracleDS_PARLAMEN</jndi-name>
            <use-java-context>false</use-java-context>
            <track-connection-by-tx>true</track-connection-by-tx>
            <isSameRM-override-value>false</isSameRM-override-value>
            <xa-datasource-class>oracle.jdbc.xa.client.OracleXADataSource</xa-datasource-class>
            <xa-datasource-property name="URL">jdbc:oracle:thin:@jedi:1521:PARLAMEN</xa-datasource-property>
            <xa-datasource-property name="User">ovidio</xa-datasource-property>
            <xa-datasource-property name="Password">smart</xa-datasource-property>
            <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleExceptionSorter</exception-sorter-class-name>

            </xa-datasource>

            <xa-datasource>

            <jndi-name>XAOracleDS_OVIDB</jndi-name>
            <use-java-context>false</use-java-context>
            <track-connection-by-tx>true</track-connection-by-tx>
            <isSameRM-override-value>false</isSameRM-override-value>
            <xa-datasource-class>oracle.jdbc.xa.client.OracleXADataSource</xa-datasource-class>
            <xa-datasource-property name="URL">jdbc:oracle:thin:@jedi:1521:OVIDB</xa-datasource-property>
            <xa-datasource-property name="User">ovidio</xa-datasource-property>
            <xa-datasource-property name="Password">smart</xa-datasource-property>
            <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleExceptionSorter</exception-sorter-class-name>

            </xa-datasource>

            <!--

            <depends optional-attribute-name="TransactionManagerService">jboss:service=TransactionManager

            -->


            4) my application code is
            //Distributed TX
            public void testInsertWithTxXA( String dsS_1,
            String dsS_2,
            Properties props,
            String toInsert,
            boolean musthrow)
            {
            Connection conn_1 = null;
            Connection conn_2 = null;
            PreparedStatement ps = null;
            ResultSet rs = null;
            UserTransaction ut = null;

            try
            {
            Context ctx = new InitialContext(props);
            DataSource ds_1 = (DataSource) ctx.lookup(dsS_1);
            DataSource ds_2 = (DataSource) ctx.lookup(dsS_2);
            // Object o = ctx.lookup("java:/TransactionManager");

            ut = (UserTransaction)ctx.lookup("UserTransaction");

            ut.begin();
            checkUserTransaction(ut);
            conn_1 = ds_1.getConnection();
            conn_2 = ds_2.getConnection();
            insert_XA(conn_1, conn_2, INSERT_XA, toInsert, musthrow);
            ut.commit();
            }
            catch(Throwable t)
            {
            if(ut != null)
            {
            try
            {
            ut.rollback();
            }
            catch(Throwable tu)
            {
            throw new RuntimeException(tu);
            }
            }
            throw new RuntimeException(t);
            }
            finally
            {
            close(conn_1, conn_2, ps, rs);
            }
            }


            5) when i arrive to line ---- conn_1 = ds_1.getConnection();
            I have the following exception:

            org.jboss.util.NestedSQLException: Could not enlist in transaction on entering meta-aware object!; - nested throwable: (javax.transaction.SystemException: java.lang.Throwable: Unabled to enlist resource, see the previous warnings. tx=TransactionImpl:XidImpl[FormatId=257, GlobalId=jedi/17, BranchQual=, localId=17]); - nested throwable: (org.jboss.resource.JBossResourceException: Could not enlist in transaction on entering meta-aware object!; - nested throwable: (javax.transaction.SystemException: java.lang.Throwable: Unabled to enlist resource, see the previous warnings. tx=TransactionImpl:XidImpl[FormatId=257, GlobalId=jedi/17, BranchQual=, localId=17]))

            6) I can't use JBossTS because the company doen't aloud it.



            If you could help me in this one it woud be great.
            thanks in advance
            ovidio

            • 3. Re: userTransaction rollback or commit not working
              Kevin Conner Master

              Hiya Ovidio.

              Apologies for the delay in responding.

              The enlistment of the resource has failed, your log may contain further details. If there is nothing in the log then please enable the TRACE logging for org.jboss.tm.TransactionImpl.

              Kev

              • 4. Re: userTransaction rollback or commit not working
                shubhashreee mishra Newbie

                Wat is the advantase os using rollback and commit in jdbc connection

                • 5. Re: userTransaction rollback or commit not working
                  vakuthota Newbie

                   

                  "oviwarrior" wrote:
                  Hi Kevin,
                  I have put my code in a servlet method.
                  1) I'm using oracle 9i
                  2) in jboss-service.xml i have put the XidFactory pad to true.
                  3) in oracle-xml I have decalred 2 datasources. This xml contains:
                  <datasources>

                  <xa-datasource>

                  <jndi-name>XAOracleDS_PARLAMEN</jndi-name>
                  <use-java-context>false</use-java-context>
                  <track-connection-by-tx>true</track-connection-by-tx>
                  <isSameRM-override-value>false</isSameRM-override-value>
                  <xa-datasource-class>oracle.jdbc.xa.client.OracleXADataSource</xa-datasource-class>
                  <xa-datasource-property name="URL">jdbc:oracle:thin:@jedi:1521:PARLAMEN</xa-datasource-property>
                  <xa-datasource-property name="User">ovidio</xa-datasource-property>
                  <xa-datasource-property name="Password">smart</xa-datasource-property>
                  <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleExceptionSorter</exception-sorter-class-name>

                  </xa-datasource>

                  <xa-datasource>

                  <jndi-name>XAOracleDS_OVIDB</jndi-name>
                  <use-java-context>false</use-java-context>
                  <track-connection-by-tx>true</track-connection-by-tx>
                  <isSameRM-override-value>false</isSameRM-override-value>
                  <xa-datasource-class>oracle.jdbc.xa.client.OracleXADataSource</xa-datasource-class>
                  <xa-datasource-property name="URL">jdbc:oracle:thin:@jedi:1521:OVIDB</xa-datasource-property>
                  <xa-datasource-property name="User">ovidio</xa-datasource-property>
                  <xa-datasource-property name="Password">smart</xa-datasource-property>
                  <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleExceptionSorter</exception-sorter-class-name>

                  </xa-datasource>

                  <!--
                  <mbean code="org.jboss.resource.adapter.jdbc.vendor.OracleXAExceptionFormatter" name="jboss.jca:service=OracleXAExceptionFormatter">
                  <depends optional-attribute-name="TransactionManagerService">jboss:service=TransactionManager</depends>
                  </mbean>
                  -->
                  </datasources>

                  4) my application code is
                  //Distributed TX
                  public void testInsertWithTxXA( String dsS_1,
                  String dsS_2,
                  Properties props,
                  String toInsert,
                  boolean musthrow)
                  {
                  Connection conn_1 = null;
                  Connection conn_2 = null;
                  PreparedStatement ps = null;
                  ResultSet rs = null;
                  UserTransaction ut = null;

                  try
                  {
                  Context ctx = new InitialContext(props);
                  DataSource ds_1 = (DataSource) ctx.lookup(dsS_1);
                  DataSource ds_2 = (DataSource) ctx.lookup(dsS_2);
                  // Object o = ctx.lookup("java:/TransactionManager");

                  ut = (UserTransaction)ctx.lookup("UserTransaction");

                  ut.begin();
                  checkUserTransaction(ut);
                  conn_1 = ds_1.getConnection();
                  conn_2 = ds_2.getConnection();
                  insert_XA(conn_1, conn_2, INSERT_XA, toInsert, musthrow);
                  ut.commit();
                  }
                  catch(Throwable t)
                  {
                  if(ut != null)
                  {
                  try
                  {
                  ut.rollback();
                  }
                  catch(Throwable tu)
                  {
                  throw new RuntimeException(tu);
                  }
                  }
                  throw new RuntimeException(t);
                  }
                  finally
                  {
                  close(conn_1, conn_2, ps, rs);
                  }
                  }


                  5) when i arrive to line ---- conn_1 = ds_1.getConnection();
                  I have the following exception:

                  org.jboss.util.NestedSQLException: Could not enlist in transaction on entering meta-aware object!; - nested throwable: (javax.transaction.SystemException: java.lang.Throwable: Unabled to enlist resource, see the previous warnings. tx=TransactionImpl:XidImpl[FormatId=257, GlobalId=jedi/17, BranchQual=, localId=17]); - nested throwable: (org.jboss.resource.JBossResourceException: Could not enlist in transaction on entering meta-aware object!; - nested throwable: (javax.transaction.SystemException: java.lang.Throwable: Unabled to enlist resource, see the previous warnings. tx=TransactionImpl:XidImpl[FormatId=257, GlobalId=jedi/17, BranchQual=, localId=17]))

                  6) I can't use JBossTS because the company doen't aloud it.



                  If you could help me in this one it woud be great.
                  thanks in advance
                  ovidio



                  Hi Ovidio,

                  I am also looking for the same requirement to have distributed transaction with 2 different datasources and JMS topic......

                  but facing the similar problem what you got "enlistResource failed", when i am trying to get the connection from datasource...
                  i.e.,

                  17:52:34,405 INFO [TxConnectionManager] Could not enlist in transaction on entering meta-aware object!
                  javax.transaction.SystemException: enlistResource failed
                  ----
                  ----
                  17:52:34,405 WARN [TransactionImpl] xa error: -3 (A resource manager error has occured in the transaction branch.); oracle error: 65535; oracle sql error: -1;
                  oracle.jdbc.xa.OracleXAException
                  at oracle.jdbc.xa.OracleXAResource.checkError(OracleXAResource.java:1157)
                  at oracle.jdbc.xa.client.OracleXAResource.start(OracleXAResource.java:295)


                  I configured oracle-xa-ds.xml, set pad=true in jboss-service.xml.

                  I appreciate if you can share if you have solved this. Please reply with full details.

                  Pls suggest what all i need to configure to make the oracle database XA compliant ??

                  thanks in advance...
                  Venu





                  • 6. Re: userTransaction rollback or commit not working
                    Kevin Conner Master

                     

                    17:52:34,405 WARN [TransactionImpl] xa error: -3 (A resource manager error has occured in the transaction branch.); oracle error: 65535; oracle sql error: -1;
                    oracle.jdbc.xa.OracleXAException
                    at oracle.jdbc.xa.OracleXAResource.checkError(OracleXAResource.java:1157)
                    at oracle.jdbc.xa.client.OracleXAResource.start(OracleXAResource.java:295)

                    This message appears to have come from the Oracle database. Can you check the Oracle logs and see whether they contain more information?

                    Kev

                    • 7. Re: userTransaction rollback or commit not working
                      vakuthota Newbie

                      The problem is because Oracle database is not XA compliant, thus throwing the following exception

                      OracleXAException: XAER_RMERR (Internal XA Error).

                      Reason for problem:

                      The error is that the transaction manager was unable to convert the transaction to an XA transaction. Specifically, Oracle returned an error XAER_RMERR, error code number 65535. ORA-65535 is not a valid error code and XAER_RMERR essentially means that something went wrong with XA. What this indicates is that your Oracle database is not configured to support XA transactions. Therefore, when the WebSphere Application Server transaction manager instructs the Oracle transaction manager to participate in this XA transaction, Oracle cannot comply and throws this exception

                      Solution :

                      The solution is to run two scripts that are included in the Oracle install. This will likely need to be performed by your Oracle DBA, since you must be logged into Oracle as SYSOPER or SYSDBA in order to have the necessary permissions for these scripts to work. The scripts are:

                      directory: <ORACLE_HOME>\javavm\install
                      file:initxa.sql
                      file: initjvm.sql
                      The initxa.sql script configures the database for XA. Once it runs successfully, your database is configured for XA. The script may run successfully the first time you try. Unfortunately, it probably will not run successfully because some of the database's memory spaces are too small. To fix this, run the initjvm.sql script. It will probably fail too, but in doing so it will indicate which parameters need to be adjusted. The parameters are stored in this file:

                      directory: <ORACLE_HOME>\database
                      file: init<DATABASE_SID>.ora

                      This table shows two parameters that typically need to be increased. Your particular database configuration may require adjusting different parameters.

                      Oracle Initialization Values

                      Parameter Name Minimum Value
                      java_pool_size 12000000
                      shared_pool_size 24000000

                      Once initjvm.sql runs successfully, then initxa.sql should run successfully. The Oracle database will need to be restarted for the changes to take effect.

                      And for XA_Recovery, following grants must be given by SYSDBA :

                      grant select on DBA_PENDING_TRANSACTIONS to PUBLIC

                      You can see more details information from the following link :

                      http://www-128.ibm.com/developerworks/websphere/library/techarticles/0407_woolf/0407_woolf.html?ca=dnp-327Scroll