WSMQ 队列限制

Question

在单个连接和单个会话中可以打开的队列数量是否有限制？我目前可以打开 128 个队列并向它们发送消息。如果我尝试打开 129，我会收到以下错误...

谢谢

错误：

com.ibm.msg.client.jms.DetailedResourceAllocationException: JMSWMQ2008: Failed to open MQ queue 'TestQueue_129'. JMS attempted to perform an MQOPEN, but WebSphere MQ reported an error. Use the linked exception to determine the cause of this error. Check that the specified queue and queue manager are defined correctly.
    at com.ibm.msg.client.wmq.common.internal.Reason.reasonToException(Reason.java:579)
    at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:219)
    at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1000)
    at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:956)
    at com.ibm.msg.client.wmq.internal.WMQMessageProducer.access$800(WMQMessageProducer.java:59)
    at com.ibm.msg.client.wmq.internal.WMQMessageProducer$SpiIdentifiedProducerShadow.initialise(WMQMessageProducer.java:727)
    at com.ibm.msg.client.wmq.internal.WMQMessageProducer.<init>(WMQMessageProducer.java:931)
    at com.ibm.msg.client.wmq.internal.WMQSession.createProducer(WMQSession.java:783)
    at com.ibm.msg.client.jms.internal.JmsSessionImpl.createProducer(JmsSessionImpl.java:1122)
    at com.ibm.msg.client.jms.internal.JmsQueueSessionImpl.createSender(JmsQueueSessionImpl.java:131)
    at com.ibm.mq.jms.MQQueueSession.createSender(MQQueueSession.java:147)
    at com.ibm.mq.jms.MQQueueSession.createProducer(MQQueueSession.java:248)
    at MyQueue.<init>(MyQueue.java:25)
    at Main.main(Main.java:54)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at java.lang.reflect.Method.invoke(Method.java:599)
    at com.ibm.ws.client.applicationclient.launchClient.createContainerAndLaunchApp(launchClient.java:788)
    at com.ibm.ws.client.applicationclient.launchClient.main(launchClient.java:493)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at java.lang.reflect.Method.invoke(Method.java:599)
    at com.ibm.wsspi.bootstrap.WSLauncher.launchMain(WSLauncher.java:213)
    at com.ibm.wsspi.bootstrap.WSLauncher.main(WSLauncher.java:93)
    at com.ibm.wsspi.bootstrap.WSLauncher.run(WSLauncher.java:74)
    at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at java.lang.reflect.Method.invoke(Method.java:599)
    at org.eclipse.core.launcher.Main.invokeFramework(Main.java:340)
    at org.eclipse.core.launcher.Main.basicRun(Main.java:282)
    at org.eclipse.core.launcher.Main.run(Main.java:981)
    at com.ibm.wsspi.bootstrap.WSPreLauncher.launchEclipse(WSPreLauncher.java:330)
    at com.ibm.wsspi.bootstrap.WSPreLauncher.main(WSPreLauncher.java:108)
Caused by: com.ibm.mq.MQException: JMSCMQ0001: WebSphere MQ call failed with compcode '2' ('MQCC_FAILED') reason '2017' ('MQRC_HANDLE_NOT_AVAILABLE').
    at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:206)
    ... 39 more
WSCL0100E: Exception received: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at java.lang.reflect.Method.invoke(Method.java:599)
    at com.ibm.ws.client.applicationclient.launchClient.createContainerAndLaunchApp(launchClient.java:788)
    at com.ibm.ws.client.applicationclient.launchClient.main(launchClient.java:493)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at java.lang.reflect.Method.invoke(Method.java:599)
    at com.ibm.wsspi.bootstrap.WSLauncher.launchMain(WSLauncher.java:213)
    at com.ibm.wsspi.bootstrap.WSLauncher.main(WSLauncher.java:93)
    at com.ibm.wsspi.bootstrap.WSLauncher.run(WSLauncher.java:74)
    at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at java.lang.reflect.Method.invoke(Method.java:599)
    at org.eclipse.core.launcher.Main.invokeFramework(Main.java:340)
    at org.eclipse.core.launcher.Main.basicRun(Main.java:282)
    at org.eclipse.core.launcher.Main.run(Main.java:981)
    at com.ibm.wsspi.bootstrap.WSPreLauncher.launchEclipse(WSPreLauncher.java:330)
    at com.ibm.wsspi.bootstrap.WSPreLauncher.main(WSPreLauncher.java:108)
Caused by: java.lang.NullPointerException
    at MyQueue.sendMessage(MyQueue.java:39)
    at Main.main(Main.java:55)
    ... 27 more

Answer 1

这是由队列管理器的 MAXHANDS 属性。

默认值为 256。根据您访问队列的方式，类可能会打开每个队列两次，从而导致最多 128 个打开队列。

您可以使用 DIS QSTATUS 命令。