Resin + Oracle + [Spring] + XA Transaction REQUIRES_NEW - 内部事务提交失败

时间：2013-04-18 16:30:20

标签： oracle datasource spring-transactions distributed-transactions resin

请帮助解决Resin + Oracle上的XA事务问题：

我们有WebApp，它必须执行涉及Oracle 11.2.0.1和Ehcache 2.7的业务事务。 （实际上可能有各种组合 - 两个不同的Oracle数据源（不同的模式），有/没有Ehcache等）。这是从普通JDBC使用切换到JTA事务划分的原因。

我们使用： - 使用Spring 3.2.1修饰的Resin JTA实现，以简化事务暂停和使用程序化方法进行事务边界定义（“手动”使用TransactionManager暂停/恢复也会产生问题）如下：

public void doOuterTransaction() throws Throwable {
    DefaultTransactionDefinition def = new DefaultTransactionDefinition();
    def.setName("myTx");
    def.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRES);
    TransactionStatus status = txManager.getTransaction(def);
    Connection connection = null;
    Cache cache = null;
    try {
        cache = ...; // get cache from CacheManager
        connection = myDataSource.getConnection(); // or "DataSourceUtils.getConnection(myDataSource)" to guarantee same dbConnection from Spring
        // some business logic
        doInnerTransaction();
        // some business logic
        txManager.commit(status);
    } catch (Throwable ex) {
        txManager.rollback(status);
        throw ex;
    } finally {
        if (connection!=null) {
            connection.close();
        }
    }
}

public void doInnerTransaction() throws Throwable {
    DefaultTransactionDefinition def = new DefaultTransactionDefinition();
    def.setName("myTx");
    def.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRES_NEW);
    TransactionStatus status = txManager.getTransaction(def);
    Connection connection = null;
    Cache cache = null;
    try {
        cache = ...; // get cache from CacheManager
        connection = myDataSource.getConnection(); // or "DataSourceUtils.getConnection(myDataSource)" to guarantee same dbConnection from Spring
        // some business logic
        txManager.commit(status);
    } catch (Throwable ex) {
        txManager.rollback(status);
        throw ex;
    } finally {
        if (connection!=null) {
            connection.close();
        }
    }
}
  • 配置了“XA”事务支持的缓存的Ehcache。

  • Resin连接池与Oracle驱动程序“oracle.jdbc.xa.client.OracleXADataSource”，通过resin.conf配置如下

    <database>
<name>my_xa_datasource</name>
<jndi-name>jdbc/my_xa</jndi-name>
<driver>
    <type>oracle.jdbc.xa.client.OracleXADataSource</type>
    <url>${MY_DB_URL}</url>
    <user>${MY_DB_USERNAME}</user>
    <password>${MY_DB_PASSWORD}</password>
</driver>
<max-connections>50</max-connections>
<max-idle-time>60s</max-idle-time>
<max-active-time>24h</max-active-time>
<max-overflow-connections>15</max-overflow-connections>
<ping>true</ping>
<ping-table>DUAL</ping-table>
<ping-interval>240s</ping-interval>
<transaction-timeout>24h</transaction-timeout>
<xa>true</xa>
</database>

所有具有受影响资源组合且传播级别为REQUIRED的交易都可以立即使用。但是当我们有外部事务“REQUIRED”和内部事务“REQUIRES_NEW”的情况时 - 暂停外部事务会导致问题并且无法提交内部事务。甚至更多 - 已经运行内部事务我们可以看到来自外部事务的UNcommited更改看起来完全错误。

行为取决于外部和内部交易涉及哪些资源。我们有以下案例： 1.在内部和外部交易中只有Ehcache访问权限，即使内部的REQUIRES_NEW也可以正常工作。

  1. 在外部事务中拥有Ehcache访问权限并且只在内部事务中进行数据库访问也可以正常工作，即使是内部事务的REQUIRES_NEW也是如此。

  2. 外部事务或两个事务中的DB访问案例（无论涉及多少DataSource，即使DataSources使用不与事务边界重叠）也会在提交内部事务时出现以下错误：

    3. _ 

    ch.sc.common.ShortAGRuntimeException: org.springframework.transaction.TransactionSystemException:
JTA failure on commit; nested exception is com.caucho.transaction.SystemExceptionWrapper:
XA_RMERR: Resource manager error.
at ch.sc.glibs.mytest.MyTestServlet.doGet(MyTestServlet.java:34)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:120)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:97)
at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:109)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at com.caucho.server.security.SecurityFilterChain.doFilter(SecurityFilterChain.java:132)
at com.caucho.server.webapp.WebAppListenerFilterChain.doFilter(WebAppListenerFilterChain.java:114)
at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:156)
at com.caucho.server.webapp.AccessLogFilterChain.doFilter(AccessLogFilterChain.java:95)
at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:289)
at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:838)
at com.caucho.network.listen.TcpSocketLink.dispatchRequest(TcpSocketLink.java:1309)
at com.caucho.network.listen.TcpSocketLink.handleRequest(TcpSocketLink.java:1265)
at com.caucho.network.listen.TcpSocketLink.handleRequestsImpl(TcpSocketLink.java:1249)
at com.caucho.network.listen.TcpSocketLink.handleRequests(TcpSocketLink.java:1157)
at com.caucho.network.listen.TcpSocketLink.handleAcceptTaskImpl(TcpSocketLink.java:956)
at com.caucho.network.listen.ConnectionTask.runThread(ConnectionTask.java:117)
at com.caucho.network.listen.ConnectionTask.run(ConnectionTask.java:93)
at com.caucho.network.listen.SocketLinkThreadLauncher.handleTasks(SocketLinkThreadLauncher.java:169)
at com.caucho.network.listen.TcpSocketAcceptThread.run(TcpSocketAcceptThread.java:61)
at com.caucho.env.thread2.ResinThread2.runTasks(ResinThread2.java:173)
at com.caucho.env.thread2.ResinThread2.run(ResinThread2.java:118)
Caused by: org.springframework.transaction.TransactionSystemException:
JTA failure on commit; nested exception is com.caucho.transaction.SystemExceptionWrapper:
XA_RMERR: Resource manager error.
at org.springframework.transaction.jta.JtaTransactionManager.doCommit(JtaTransactionManager.java:1025)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:754)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
at ch.sc.glibs.mytest.MyTxTest.test3(MyTxTest.java:155)
at ch.sc.glibs.mytest.MyTxTest.doMainComplexTx(MyTxTest.java:81)
at ch.sc.glibs.mytest.MyTxTest.doTxTest(MyTxTest.java:50)
at ch.sc.glibs.mytest.MyTxTest__ResinScopeProxy.doTxTest(Unknown Source)
at ch.sc.glibs.mytest.MyTestServlet.doGet(MyTestServlet.java:32)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:120)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:97)
at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:109)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at com.caucho.server.security.SecurityFilterChain.doFilter(SecurityFilterChain.java:132)
at com.caucho.server.webapp.WebAppListenerFilterChain.doFilter(WebAppListenerFilterChain.java:114)
at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:156)
at com.caucho.server.webapp.AccessLogFilterChain.doFilter(AccessLogFilterChain.java:95)
at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:289)
at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:838)
at com.caucho.network.listen.TcpSocketLink.dispatchRequest(TcpSocketLink.java:1309)
at com.caucho.network.listen.TcpSocketLink.handleRequest(TcpSocketLink.java:1265)
at com.caucho.network.listen.TcpSocketLink.handleRequestsImpl(TcpSocketLink.java:1249)
at com.caucho.network.listen.TcpSocketLink.handleRequests(TcpSocketLink.java:1157)
at com.caucho.network.listen.TcpSocketLink.handleAcceptTaskImpl(TcpSocketLink.java:956)
at com.caucho.network.listen.ConnectionTask.runThread(ConnectionTask.java:117)
at com.caucho.network.listen.ConnectionTask.run(ConnectionTask.java:93)
at com.caucho.network.listen.SocketLinkThreadLauncher.handleTasks(SocketLinkThreadLauncher.java:169)
at com.caucho.network.listen.TcpSocketAcceptThread.run(TcpSocketAcceptThread.java:61)
at com.caucho.env.thread2.ResinThread2.runTasks(ResinThread2.java:173)
at com.caucho.env.thread2.ResinThread2.run(ResinThread2.java:118)
Caused by: com.caucho.transaction.SystemExceptionWrapper: XA_RMERR: Resource
manager error.
at com.caucho.transaction.TransactionImpl.heuristicException(TransactionImpl.java:1040)
at com.caucho.transaction.TransactionImpl.commitResources(TransactionImpl.java:931)
at com.caucho.transaction.TransactionImpl.commit(TransactionImpl.java:886)
at com.caucho.transaction.TransactionManagerImpl.commit(TransactionManagerImpl.java:324)
at com.caucho.transaction.UserTransactionImpl.commit(UserTransactionImpl.java:363)
at com.caucho.transaction.UserTransactionProxy.commit(UserTransactionProxy.java:171)
at org.springframework.transaction.jta.JtaTransactionManager.doCommit(JtaTransactionManager.java:1009)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:754)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
at ch.sc.glibs.mytest.MyTxTest.test3(MyTxTest.java:155)
at ch.sc.glibs.mytest.MyTxTest.doMainComplexTx(MyTxTest.java:81)
at ch.sc.glibs.mytest.MyTxTest.doTxTest(MyTxTest.java:50)
at ch.sc.glibs.mytest.MyTxTest__ResinScopeProxy.doTxTest(Unknown Source)
at ch.sc.glibs.mytest.MyTestServlet.doGet(MyTestServlet.java:32)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:120)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:97)
at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:109)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at com.caucho.server.security.SecurityFilterChain.doFilter(SecurityFilterChain.java:132)
at com.caucho.server.webapp.WebAppListenerFilterChain.doFilter(WebAppListenerFilterChain.java:114)
at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:156)
at com.caucho.server.webapp.AccessLogFilterChain.doFilter(AccessLogFilterChain.java:95)
at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:289)
at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:838)
at com.caucho.network.listen.TcpSocketLink.dispatchRequest(TcpSocketLink.java:1309)
at com.caucho.network.listen.TcpSocketLink.handleRequest(TcpSocketLink.java:1265)
at com.caucho.network.listen.TcpSocketLink.handleRequestsImpl(TcpSocketLink.java:1249)
at com.caucho.network.listen.TcpSocketLink.handleRequests(TcpSocketLink.java:1157)
at com.caucho.network.listen.TcpSocketLink.handleAcceptTaskImpl(TcpSocketLink.java:956)
at com.caucho.network.listen.ConnectionTask.runThread(ConnectionTask.java:117)
at com.caucho.network.listen.ConnectionTask.run(ConnectionTask.java:93)
at com.caucho.network.listen.SocketLinkThreadLauncher.handleTasks(SocketLinkThreadLauncher.java:169)
at com.caucho.network.listen.TcpSocketAcceptThread.run(TcpSocketAcceptThread.java:61)
at com.caucho.env.thread2.ResinThread2.runTasks(ResinThread2.java:173)
at com.caucho.env.thread2.ResinThread2.run(ResinThread2.java:118)
Caused by: oracle.jdbc.xa.OracleXAException
at oracle.jdbc.xa.OracleXAResource.checkError(OracleXAResource.java:1110)
at oracle.jdbc.xa.client.OracleXAResource.end(OracleXAResource.java:436)
at com.caucho.sql.DisjointXAResource.end(DisjointXAResource.java:105)
at com.caucho.env.dbpool.ManagedPoolItem.endResource(ManagedPoolItem.java:1017)
at com.caucho.env.dbpool.ManagedPoolItem.commit(ManagedPoolItem.java:957)
at com.caucho.transaction.TransactionImpl.commitResources(TransactionImpl.java:924)
at com.caucho.transaction.TransactionImpl.commit(TransactionImpl.java:886)
at com.caucho.transaction.TransactionManagerImpl.commit(TransactionManagerImpl.java:324)
at com.caucho.transaction.UserTransactionImpl.commit(UserTransactionImpl.java:363)
at com.caucho.transaction.UserTransactionProxy.commit(UserTransactionProxy.java:171)
at org.springframework.transaction.jta.JtaTransactionManager.doCommit(JtaTransactionManager.java:1009)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:754)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
at ch.sc.glibs.mytest.MyTxTest.test3(MyTxTest.java:155)
at ch.sc.glibs.mytest.MyTxTest.doMainComplexTx(MyTxTest.java:81)
at ch.sc.glibs.mytest.MyTxTest.doTxTest(MyTxTest.java:50)
at ch.sc.glibs.mytest.MyTxTest__ResinScopeProxy.doTxTest(Unknown Source)
at ch.sc.glibs.mytest.MyTestServlet.doGet(MyTestServlet.java:32)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:120)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:97)
at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:109)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at ch.sc.common.http.filters.RegexpFilteringProxyFilter.doFilter(RegexpFilteringProxyFilter.java:65)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
at com.caucho.server.security.SecurityFilterChain.doFilter(SecurityFilterChain.java:132)
at com.caucho.server.webapp.WebAppListenerFilterChain.doFilter(WebAppListenerFilterChain.java:114)
at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:156)
at com.caucho.server.webapp.AccessLogFilterChain.doFilter(AccessLogFilterChain.java:95)
at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:289)
at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:838)
at com.caucho.network.listen.TcpSocketLink.dispatchRequest(TcpSocketLink.java:1309)
at com.caucho.network.listen.TcpSocketLink.handleRequest(TcpSocketLink.java:1265)
at com.caucho.network.listen.TcpSocketLink.handleRequestsImpl(TcpSocketLink.java:1249)
at com.caucho.network.listen.TcpSocketLink.handleRequests(TcpSocketLink.java:1157)
at com.caucho.network.listen.TcpSocketLink.handleAcceptTaskImpl(TcpSocketLink.java:956)
at com.caucho.network.listen.ConnectionTask.runThread(ConnectionTask.java:117)
at com.caucho.network.listen.ConnectionTask.run(ConnectionTask.java:93)
at com.caucho.network.listen.SocketLinkThreadLauncher.handleTasks(SocketLinkThreadLauncher.java:169)
at com.caucho.network.listen.TcpSocketAcceptThread.run(TcpSocketAcceptThread.java:61)
at com.caucho.env.thread2.ResinThread2.runTasks(ResinThread2.java:173)
at com.caucho.env.thread2.ResinThread2.run(ResinThread2.java:118)

    在准备提交阶段，我们在内部看到ORA-25352“没有当前事务”“用户会话未附加到任何事务”（调用Oracle JAVA_XA.prepare会返回错误代码）。 看起来好像在内部事务提交应用程序中由于某种原因涉及外部事务中受影响的资源（DataSource）似乎是不正确的，因为在内部事务中没有数据库使用我们期望不会调用Oracle。

    最糟糕的是使用Apache DBCP池而不是Resin池实现解决问题... Atomikos的使用（TransactionManager实现和Connections Pool实现）也可以正常工作。但是两个提到的实现都有自己的问题。

    目前我们认为我们遇到了DB池或XA驱动程序配置问题...... 这个问题可以与任何增强功能相关联，例如使用本地事务而不是全局事务等吗？ 我们尝试了各种资源定义（数据库，资源参考），使用了“xa-forbid-same-rm”，关闭了spring事务同步，试图手动使用TransactionManager来暂停/恢复事务等等 - 一切都没有运气。

    欢迎任何想法/解决方案！

1 个答案:

答案 0 :(得分：1)

组合Resin / Spring / Oracle / XA交易完美无缺。 这里的关键是与数据库连接正常工作。

必须在您的交易中打开所有数据库连接。在这种情况下，将隐式地为该事务登记该资源。 我们的示例代码就这样做了。

问题是我们在启动NEW事务时离开了数据库连接OPEN。这意味着在开始新事务之前，Resin的数据库池（也称为UserConnection）提供的数据库连接尚未返回到池中。 由于某种原因，Resin TransactionManager实现隐式地将UNreturned数据库连接添加到内部事务中使用的资源列表。并且内部事务的提交失败，因为Oracle知道数据库连接已经在外部未提交的事务中使用了。

可以安全地将db连接返回到池。在执行内部事务（由于树脂将在新事务中为您提供新的数据库连接而未看到所有未提交的更改）之后，您可能再次询问外部事务中的数据库连接，并且此数据库连接将与启动内部事务之前的数据库连接完全相同，因此您将看到所有未提交的更改。因此，从resin的连接池将提供与当前UserTransaction相关联的连接。

另一个重要的事情 - 如果你使用Spring从数据源（DataSourceUtils）获取连接，你必须在启动内部事务之前使用DataSourceUtils释放连接，让Spring知道已经返回了连接。实际上Spring的另一个优点是你可以拥有自己的额外TransactionSynchronization逻辑。 您也可以直接使用数据源（没有Spring），在这种情况下，您可以调用connection.close（）将其返回到连接池。

最后，外部交易（任何交易）的代码应如下所示：

public void doOuterTransaction() throws Throwable {
    DefaultTransactionDefinition def = new DefaultTransactionDefinition();
    def.setName("myTx");
    def.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRES);
    TransactionStatus status = txManager.getTransaction(def);
    Connection connection = null;
    Cache cache = null;
    try {
        try {
            cache = ...; // get cache from CacheManager
            connection = DataSourceUtils.getConnection(myDataSource);
            // some business logic
        } finally {
            DataSourceUtils.releaseConnection(connection, myDataSource);
        }

        doInnerTransaction();

        try {
            cache = ...; // get cache from CacheManager
            connection = DataSourceUtils.getConnection(myDataSource);
            // some other business logic 
        } finally {
            DataSourceUtils.releaseConnection(connection, myDataSource);
        }
    } catch (Throwable ex) {
        txManager.rollback(status);
        throw ex;
    }

    txManager.commit(status);
}

所以不要害怕获取和释放数据库连接。你有连接池 - 它很快。在连接上调用close（）只会将其返回到池中（方法名称“release”要好得多！）。拥有活动的UserTransaction将不会提交您的更改，直到您显式调用commit（）。

感谢大家的帮助！

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