连接到MQ管理器会收到MQ错误2495 [英] Connecting to MQ manager get MQ error 2495

问题描述

我们有一个可以在阶段中完全运行的应用程序，但是当将其部署到生产环境中时，会出现MQ错误2495.我们在Tomcat 8.5中运行该应用程序，并且使用的是相同的MQ库(8.0.0.6).服务器操作系统是Windows.

We have an application that was fully working in staging but when we deploy it on production we are getting MQ error 2495. We are running the application in a Tomcat 8.5 and we are using the same MQ libraries (8.0.0.6). The server OS is Windows.

从MQ读取消息的代码如下:

The code for reading the message from the MQ looks like:

MQEnvironment.hostname = queueSettings.getServer();
        MQEnvironment.channel = queueSettings.getChannel();
        MQEnvironment.port = queueSettings.getPort();

        MQQueueManager queueManager = new MQQueueManager(queueSettings.getQueueManager());

        int openOptions = CMQC.MQCBDO_FAIL_IF_QUIESCING | CMQC.MQOO_INPUT_SHARED | CMQC.MQOO_BROWSE;

        MQQueue queue = queueManager.accessQueue(queueSettings.getQueue(), openOptions);

错误的完整堆栈跟踪看起来像:

De full stacktrace of the error looks like:

com.ibm.mq.MQException: MQJE001: Completion Code '2', Reason '2495'.
at com.ibm.mq.MQSESSION.(MQSESSION.java:2063)
at com.ibm.mq.MQSESSION.getSession(MQSESSION.java:2103)
at com.ibm.mq.MQManagedConnectionJ11.(MQManagedConnectionJ11.java:207)
at com.ibm.mq.MQBindingsManagedConnectionFactoryJ11._createManagedConnection(MQBindingsManagedConnectionFactoryJ11.java:185)
at com.ibm.mq.MQBindingsManagedConnectionFactoryJ11.createManagedConnection(MQBindingsManagedConnectionFactoryJ11.java:230)
at com.ibm.mq.StoredManagedConnection.(StoredManagedConnection.java:96)
at com.ibm.mq.MQSimpleConnectionManager.allocateConnection(MQSimpleConnectionManager.java:194)
at com.ibm.mq.MQQueueManagerFactory.obtainBaseMQQueueManager(MQQueueManagerFactory.java:758)
at com.ibm.mq.MQQueueManagerFactory.procure(MQQueueManagerFactory.java:706)
at com.ibm.mq.MQQueueManagerFactory.constructQueueManager(MQQueueManagerFactory.java:670)
at com.ibm.mq.MQQueueManagerFactory.createQueueManager(MQQueueManagerFactory.java:145)
at com.ibm.mq.MQQueueManager.(MQQueueManager.java:675)
at com.atlascopco.cpq.connections.MQConnection.readMessagesFromQueue(MQConnection.java:92)
at com.atlascopco.cpq.tasks.ResponseHandlerTask.run(ResponseHandlerTask.java:43)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)
Caused by: com.ibm.mq.jmqi.JmqiException: CC=2;RC=2495;AMQ8568: The native JNI library 'mqjbnd64' was not found. For a client installation this is expected. [3=mqjbnd64]
at com.ibm.mq.jmqi.local.LocalMQ.loadLib(LocalMQ.java:1202)
at com.ibm.mq.jmqi.local.LocalMQ$1.run(LocalMQ.java:272)
at java.security.AccessController.doPrivileged(Native Method)
at com.ibm.mq.jmqi.local.LocalMQ.initialise_inner(LocalMQ.java:260)
at com.ibm.mq.jmqi.local.LocalMQ.initialise(LocalMQ.java:223)
at com.ibm.mq.jmqi.local.LocalMQ.(LocalMQ.java:1255)
at com.ibm.mq.jmqi.local.LocalServer.(LocalServer.java:219)
at sun.reflect.GeneratedConstructorAccessor10933.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.ibm.mq.jmqi.JmqiEnvironment.getInstance(JmqiEnvironment.java:656)
at com.ibm.mq.jmqi.JmqiEnvironment.getMQI(JmqiEnvironment.java:590)
at com.ibm.mq.MQSESSION.(MQSESSION.java:2056)
... 15 common frames omitted
Caused by: java.lang.UnsatisfiedLinkError: no mqjbnd64 in java.library.path
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at com.ibm.mq.jmqi.local.LocalMQ.loadLib(LocalMQ.java:1146)
... 27 common frames omitted

如何找到问题?

推荐答案

问题出在您的堆栈跟踪中:

The issue is in your stack trace:

Caused by: com.ibm.mq.jmqi.JmqiException: CC=2;RC=2495;AMQ8568: The native JNI library 'mqjbnd64' was not found. For a client installation this is expected. [3=mqjbnd64]
Caused by: java.lang.UnsatisfiedLinkError: no mqjbnd64 in java.library.path

这在IBM MQ知识中心页面"

This is documented on the IBM MQ Knowledge center page "Configuring the Java Native Interface (JNI) libraries"

在Windows上，库的默认位置如下:

On windows the default location for the libraries are below:

MQ_INSTALLATION_PATH\java\lib (32-bit libraries)
MQ_INSTALLATION_PATH\java\lib64 (64-bit libraries)

您可以使用以下两种方法之一指定该库的位置(如果在默认位置安装了MQ，下面的两个示例都是针对64位JRE的；如果运行的是32位JRE，请使用lib目录而不是lib64目录):

You can specify the location of this library one of two ways (both examples below would be for a 64bit JRE if MQ is installed in the default location, if you are running a 32bit JRE use the lib directory instead of the lib64 directory):

1. 带有JVM参数，例如:
   -Djava.library.path=C:\Program Files\IBM\MQ\java\lib64
2. 通过OS环境变量.如果您在Windows上使用，请使用:
   set PATH=C:\Program Files\IBM\MQ\java\lib64;%PATH%

1. With a JVM argument, for example:
   -Djava.library.path=C:\Program Files\IBM\MQ\java\lib64
2. Via an OS environment variable. In your case on Windows use:
   set PATH=C:\Program Files\IBM\MQ\java\lib64;%PATH%

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