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社区首页 >问答首页 >树脂+ Oracle + [Spring] + XA事务REQUIRES_NEW -内部事务提交失败

问树脂+ Oracle + [Spring] + XA事务REQUIRES_NEW -内部事务提交失败
EN

Stack Overflow用户
提问于 2013-04-18 16:30:19
回答 1查看 1.3K关注 0票数 1

请您帮助解决树脂+Oracle上XA事务的问题：

我们有WebApp，它必须执行涉及Oracle11.2.0.1和Ehcache 2.7的业务事务。(实际上可能有不同的组合-两个不同的Oracle数据源(不同的模式)，有/没有Ehcache，等等)。这就是为什么从简单的JDBC使用切换到JTA事务划分的原因。

我们使用使用Spring3.2.1装饰的-树脂JTA实现来简化事务挂起并使用编程方法来定义事务边界(使用TransactionManager进行挂起/恢复也会出现以下问题)：

代码语言：javascript
复制
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();
        }
    }
}
  • 带有配置为“XA”事务支持的缓存的Ehcache。
  • 使用Oracle驱动程序“oracle.jdbc.xa.client.OracleXADataSource”的树脂连接池，通过resin.conf配置如下 my_xa_datasource jdbc/my_xa oracle.jdbc.xa.client.OracleXADataSource ${MY_DB_URL} ${MY_DB_USERNAME} ${MY_DB_USERNAME}$ 50 60 24小时15真双240 s 24小时真

所有具有传播级别的受影响资源组合的事务都可以正常工作。但是，当我们遇到外部事务“必需”和内部事务“REQUIRES_NEW”的情况时，暂停外部事务会导致问题，内部事务无法提交。更多的是--已经在运行内部事务--我们可以从外部事务中看到UNcommited的变化，这看起来是完全错误的。

行为取决于外部事务和内部事务涉及哪些资源。我们有以下几种情况: 1.在内部事务和外部事务中只有Ehcache访问都很好，即使对内部事务使用REQUIRES_NEW也是如此。

  1. 在外部事务中拥有Ehcache访问和仅在内部事务中进行DB访问也很好，即使在内部事务中使用REQUIRES_NEW也是如此。
  2. 在外部事务或两个事务中使用DB访问的情况(无论涉及多少DataSources，即使DataSources的使用不重叠事务边界)，在提交内部事务时也会出现以下错误：

_

代码语言：javascript
复制
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”“用户会话没有附加到任何事务”(调用Oracle JAVA_XA.prepare返回一个错误代码)。看起来，在内部事务期间，由于某种原因提交应用程序涉及外部事务中受影响的资源(DataSource)，这似乎是不正确的，因为在内部事务中不使用db，因此我们预期不会调用Oracle。

最糟糕的是使用Apache池而不是树脂池实现解决了…问题使用Atomikos ( TransactionManager实现和Connections实现)也很好。但上述两个实现都有自己的问题。

目前，我们假设DB池或XA驱动程序配置…存在问题。这个问题是否与诸如使用本地事务而不是全局事务等任何增强相关联？我们尝试了各种资源定义(数据库、资源-引用)、使用“xa-禁止-相同-rm”、关闭了spring事务同步、尝试手动使用TransactionManager挂起/恢复事务等等--所有这些都没有成功。

欢迎任何想法和解决方案！

distributed-transactions
resin
oracle
datasource
spring-transactions
EN

回答 1

Stack Overflow用户

回答已采纳

发布于 2013-04-19 16:03:22

组合树脂/Spring/Oracle/XA事务工作得很好。这里的关键是正确地使用DB连接。

必须在事务内打开所有DB连接。在这种情况下，将隐式地为事务登记此资源。我们的示例代码就是这样做的。

问题是，当启动新事务时，我们将db连接保持在打开状态。这意味着在开始新事务之前，树脂的db池(又名UserConnection)提供的DB连接尚未返回到池中。出于某种原因，树脂TransactionManager实现将UNreturned db连接添加到内部事务中使用的资源列表中。内部事务的提交失败，因为Oracle知道在外部未提交的事务中已经使用了db连接。

可以安全地将db连接返回到池。执行内部事务后(因为树脂将在新事务中为您提供新的db连接而看不到所有未提交的更改)，您可以在外部事务中再次请求db连接，此db连接将与启动内部事务之前的完全相同，因此您将看到所有未提交的更改。因此，从树脂的连接池将提供与当前UserTransaction相关联的连接。

更重要的是，如果您使用Spring从数据源( DataSourceUtils )获取连接，则必须在启动内部事务之前使用DataSourceUtils来释放连接，以便让Spring知道该连接已经返回。实际上，Spring的另一个优点是您可以拥有自己的附加TransactionSynchronization逻辑。您还可以直接使用数据源(没有Spring)，在本例中，您可以调用connection.close()将其返回到连接池。

最后，外部事务(任何事务)的代码应该如下所示：

代码语言：javascript
复制
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);
}

所以不要害怕数据库连接的获取和释放。你有连接池-它是快速的。在connection上调用close()只会将其返回给池(方法名"release“更好！)在显式调用commit()之前，active UserTransaction不会提交您的更改。

谢谢大家的帮助！

票数 1
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/16088428

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