Question

我基于weblogic应用服务器的集成解决方案。（Oracle零售集成总线）。解决方案的每个适配器都是EJB组件。 Weblogic Console Application view

有两种类型的适配器，第一种用于XA事务，第二种用于NONXA事务。（在PLSQL API函数中使用外部过程程序时需要NONXA。）

XA - OracleObjectSubscriberComponentImpl

        public class OracleObjectSubscriberComponentImpl
      extends DefaultAdaptorComponentImpl
      implements SubscriberComponent
    {
      ....
      protected void performSubscribe(RibContext ribContext, RibMessage inRibMessage, RibMessages outRibMsg)
        throws RibAPIException
      {
        boolean success = false;

        Connection connection = null;
        try
        {
          setRibContext(ribContext);
          setRibMessagesOut(outRibMsg);
          connection = getNewConnection();
          initCallableStatement(connection, null);
          registerOutParams();
          if (setInParams(inRibMessage))
          {
            execute();
            processResult();
            success = true;
          }
        }
        finally
        {
          end(success);
          cleanup();

          super.closeConnection(connection);
        }
      }

      public void performSubscribe(RibContext ribContext, RibMessage inRibMessage)
        throws RibAPIException
      {
        performSubscribe(ribContext, inRibMessage, null);
      }

      public void subscribe(RibContext ribContext, RibMessage inRibMessage)
        throws RibAPIException
      {
        performSubscribe(ribContext, inRibMessage);
      }
      ...
    }

NonXA - OracleObjectSubscriberComponentNonXAImpl扩展了OracleObjectSubscriberComponentImpl。

public class OracleObjectSubscriberComponentNonXAImpl
      extends OracleObjectSubscriberComponentImpl
    {
      public void initCallableStatement(Connection c, String msgType)
        throws RibAPIException
      {
        try
        {
          c.setAutoCommit(false);
        }
        catch (SQLException e)
        {
          this.LOG.error("Could not turn off AutoCommit", e);
          throw createRibAPIException("initStmt", e);
        }
        super.initCallableStatement(c, msgType);
      }

      public void end(boolean successful)
      {
        super.end(successful);
        try
        {
          if (successful) {
            this.conn.commit();
          } else {
            this.conn.rollback();
          }
          this.conn.setAutoCommit(true);
        }
                catch (SQLException sqle)
        {
          String errorString = "Error occurred during commit/rollback";
          this.LOG.error(errorString, sqle);
          throw new RuntimeException(errorString, sqle);
        }
      }

      public void subscribe(RibContext ribContext, RibMessage inRibMessage)
        throws RibAPIException
      {
        NonTransactionalSubscriberCoreService nonTransactionalSubscriberCoreService =         (NonTransactionalSubscriberCoreService)RetailServiceFactory.getService(NonTransactionalSubscriberCoreService.class);

       nonTransactionalSubscriberCoreService.subscribe(this, ribContext, inRibMessage);
      }
    }

它们之间的区别是：

NonXA Autocommit = false，this.conn.commit（）;和this.conn.rollback（）;用来代替XA Autocommit = true。
NonXA得到了覆盖方法订阅，其中创建了新的代理服务，NonXA对象进入了Proxy，它将执行Perform Subscribe。

非XA类使用NonTransactionalSubscriberCoreServiceEjb类，这是一个代理服务：

    public class NonTransactionalSubscriberCoreServiceEjb
      implements NonTransactionalSubscriberCoreService, SessionBean
    {
      ...
    public void subscribe(OracleObjectSubscriberComponentNonXAImpl subscriber, RibContext ribContext, RibMessage inRibMessage)
        throws RibAPIException
      {
        RibContextFactory.setCurrentRibContext(ribContext);
        subscriber.performSubscribe(ribContext, inRibMessage);
        RibContextFactory.clearCurrentRibContext();
      }
      ...
    }

所有适配器都不并行，每个适配器从JMS主题逐个获取消息。 XA组件工作正常，它在weblogic数据源中获得连接，并在工作完成后返回。 NonXA没有按预期工作，它从数据中获取连接而不释放它，连接保持到超时为止。

如果我更改NonXA类，请订阅此方法：

      public void subscribe(RibContext ribContext, RibMessage inRibMessage)
        throws RibAPIException
      {
          this.performSubscribe(ribContext, inRibMessage);
      }

连接将在工作完成后发布，但我不能在API中使用External Proc，因为引发了ORA-xxx（XA中不支持此功能）。我需要保留NonXA功能并释放连接。

Answer 1

解决方案：

如果从weblogic服务器管理数据源。从Weblogic控制台获取数据源，

取消选中＆＃34;在本地交易后保持连接＆＃34; 检查＆＃34;删除已启用的受感染连接＆＃34;

如果从appliaction管理数据源，请在datasource xml文件中进行相同的更改。 <jdbc-data-source> <name>rib-rms-managed-datasource</name> <jdbc-driver-params> <url>jdbc:oracle:thin:@monrmsdb.apm.local:1521:retekdb</url> <driver-name>oracle.jdbc.xa.client.OracleXADataSource</driver-name> <properties> <property> <name>user</name> <value>RMS13DEV</value> </property> </properties> </jdbc-driver-params> <jdbc-connection-pool-params> <initial-capacity>0</initial-capacity> <max-capacity>350</max-capacity> <capacity-increment>10</capacity-increment> <connection-creation-retry-frequency-seconds>1</connection-creation-retry-frequency-seconds> <test-connections-on-reserve>false</test-connections-on-reserve> <profile-harvest-frequency-seconds>60000</profile-harvest-frequency-seconds> <inactive-connection-timeout-seconds>5</inactive-connection-timeout-seconds> <statement-cache-size>0</statement-cache-size> <remove-infected-connections>true</remove-infected-connections> <pinned-to-thread>false</pinned-to-thread> </jdbc-connection-pool-params> <jdbc-data-source-params> <jndi-name>jdbc/OracleRibDs</jndi-name> <global-transactions-protocol>TwoPhaseCommit</global-transactions-protocol> <keep-conn-after-local-tx>false</keep-conn-after-local-tx> </jdbc-data-source-params> </jdbc-data-source>

如果在Proxy EJB容器中工作，则对象不会关闭\返回到池中的连接

1 个答案: