Question

我已将AMQ配置为接收和发送来自Oracle AQ的消息，如此处所述http://activemq.apache.org/jms-bridge-with-oracle-aq.html

AMQ创建并保持连接以从Oracle AQ接收消息 - 这是正确的。但是，每次AMQ向Oracle AQ发送消息时，都会创建并销毁新连接。有时，由于某些网络问题或Oracle过载，我得到一个例外：

org.apache.camel.RuntimeCamelException: org.springframework.jms.UncategorizedJmsException: Uncategorized exception occured during JMS processing; nested exception is oracle.jms.AQjmsException: IO Error: Socket read timed out
        at org.apache.camel.util.ObjectHelper.wrapRuntimeCamelException(ObjectHelper.java:1344)
        at org.apache.camel.component.jms.EndpointMessageListener$EndpointMessageListenerAsyncCallback.done(EndpointMessageListener.java:186)
        at org.apache.camel.component.jms.EndpointMessageListener.onMessage(EndpointMessageListener.java:107)
        at org.springframework.jms.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:562)
        at org.springframework.jms.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:500)
        at org.springframework.jms.listener.AbstractMessageListenerContainer.doExecuteListener(AbstractMessageListenerContainer.java:468)
        at org.springframework.jms.listener.AbstractPollingMessageListenerContainer.doReceiveAndExecute(AbstractPollingMessageListenerContainer.java:325)
        at org.springframework.jms.listener.AbstractPollingMessageListenerContainer.receiveAndExecute(AbstractPollingMessageListenerContainer.java:263)
        at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.invokeListener(DefaultMessageListenerContainer.java:1103)
        at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.executeOngoingLoop(DefaultMessageListenerContainer.java:1095)
        at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.run(DefaultMessageListenerContainer.java:992)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:744)
Caused by: org.springframework.jms.UncategorizedJmsException: Uncategorized exception occured during JMS processing; nested exception is oracle.jms.AQjmsException: IO Error: Socket read timed out
        at org.springframework.jms.support.JmsUtils.convertJmsAccessException(JmsUtils.java:316)
        at org.springframework.jms.support.JmsAccessor.convertJmsAccessException(JmsAccessor.java:168)
        at org.springframework.jms.core.JmsTemplate.execute(JmsTemplate.java:469)
        at org.apache.camel.component.jms.JmsConfiguration$CamelJmsTemplate.send(JmsConfiguration.java:226)
        at org.apache.camel.component.jms.JmsProducer.doSend(JmsProducer.java:415)
        at org.apache.camel.component.jms.JmsProducer.processInOnly(JmsProducer.java:369)
        at org.apache.camel.component.jms.JmsProducer.process(JmsProducer.java:145)
        at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:110)
        at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72)
        at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:398)
        at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
        at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
        at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:105)
        at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:87)
        at org.apache.camel.component.jms.EndpointMessageListener.onMessage(EndpointMessageListener.java:103)
        ... 11 more
Caused by: oracle.jms.AQjmsException: IO Error: Socket read timed out
        at oracle.jms.AQjmsDBConnMgr.checkForSecurityException(AQjmsDBConnMgr.java:939)
        at oracle.jms.AQjmsDBConnMgr.getConnection(AQjmsDBConnMgr.java:617)
        at oracle.jms.AQjmsDBConnMgr.<init>(AQjmsDBConnMgr.java:251)
        at oracle.jms.AQjmsConnection.<init>(AQjmsConnection.java:185)
        at oracle.jms.AQjmsConnectionFactory.createConnection(AQjmsConnectionFactory.java:583)
        at org.springframework.jms.connection.UserCredentialsConnectionFactoryAdapter.doCreateConnection(UserCredentialsConnectionFactoryAdapter.java:175)
        at org.springframework.jms.connection.UserCredentialsConnectionFactoryAdapter.createConnection(UserCredentialsConnectionFactoryAdapter.java:150)
        at org.springframework.jms.support.JmsAccessor.createConnection(JmsAccessor.java:184)
        at org.springframework.jms.core.JmsTemplate.execute(JmsTemplate.java:456)
        ... 23 more
Caused by: java.sql.SQLRecoverableException: IO Error: Socket read timed out
        at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:458)
        at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:546)
        at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:236)
        at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
        at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:521)
        at java.sql.DriverManager.getConnection(DriverManager.java:571)
        at java.sql.DriverManager.getConnection(DriverManager.java:187)
        at oracle.jms.AQjmsDBConnMgr.getConnection(AQjmsDBConnMgr.java:579)
        ... 30 more
Caused by: oracle.net.ns.NetException: Socket read timed out
        at oracle.net.ns.Packet.receive(Packet.java:339)
        at oracle.net.ns.NSProtocol.connect(NSProtocol.java:296)
        at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1102)
        at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:320)
        ... 37 more

然后消息丢失。

由于新连接操作相当繁重，我尝试配置org.springframework.jms.core.JmsTemplate以使用池化连接，如此处所述http://activemq.apache.org/spring-support.html 但这没有帮助。仍在创建新连接。

请提供建议，以帮助我不要将消息从AMQ松散到Oracle AQ。

Answer 1

你的问题可能为时已晚。但是，我想分享一些关于这个问题的想法。

该示例仅显示如何从Oracle AQ读取到AMQ。我没有看到发送到Oracle AQ的逻辑。通过查看您的异常消息，您似乎创建了一个Oracle AQ客户端来发送消息。在这种情况下，它只是打开一个连接并转储该消息。如您所见，如果失败，此连接本身将不会保留该消息。

所以你可以做几件事：

继续使用Oracle AQ客户端并处理代码中的失败/重试。这意味着如果发送到Oracle AQ失败，请让代码稍后重试。确保代码每次都关闭连接。
您已拥有本地AMQ经纪商。我不熟悉Oracle AQ。但它可能是一个网络经纪人模型。请参阅here并设置duplex = true。将消息发送给您当地的AMQ经纪人。然后，如果它无法连接到远程代理，则该消息将保留在本地，并在重新建立连接时发送。

AMQ + Oracle AQ：连接失败时丢失消息

1 个答案: