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Reconnecting to IBM MQ Queue on connection failure

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问题 Following code snippet has my connection and subscription logic for an IBM MQ Queue. When ever there is a connection failure, I am using IConnection.ExceptionListener delegate to establish a new connection to by queue and resubscribing for the messages. But the problem is, I can see multiple queue handles. How can I make sure I close the previous connection handle and establish a new connection where ever there is a connection break due to network issues or MQ server restarts? private

JVM三大性能调优参数 -Xms -Xmx -Xss 简述

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JVM内存的系统级的调优主要的目的是减少Minor GC的频率和Full GC的次数，过多的Minor GC和Full GC是会占用很多的系统资源，影响系统的吞吐量概念 - -Xss：规定了每个线程虚拟机栈（堆栈）的大小 JDK5.0以后每个线程堆栈大小为1M。在相同物理内存下，减小这个值能生成更多的线程。但是操作系统对一个进程内的线程数还是有限制的，不能无限生成，经验值在3000~5000左右。 - -Xms：堆的初始值 - -Xmx：堆可以达到的最大值注：Xms一般设置为Xmx同等大小，因为系统扩容时容易引起内存抖动，影响程序运行时的稳定性；同时以避免每次垃圾回收完成后JVM重新分配内存。补充学习 Java内存模型及性能优化来源： CSDN 作者：大鱼七号船船长链接： https://blog.csdn.net/lehek/article/details/104448386

XMS.NET hanging indefinitely on factory.CreateConnection(“username”, null);

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问题 I am trying to connect to an existing JMS queue with a .NET client. I know the queue is working, I already browsed it using IBM MQ Explorer. In the following code, the call to factory.CreateConnection keeps hanging - it does not jump to the next line, in does not show any error message. It even doesnt consume any CPU. Are there any options that I should try to get it working (or at least make it show me an error message of any kind)? private static IConnectionFactory GetConnectionFactory() {

Sending message to Multi Instance Queue Manager with XMS

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问题 Following this post: Get Active QM Instance from Multi Instance Queue Manager and connect I have created a connection XMSFactoryFactory factory = XMSFactoryFactory.GetInstance(XMSC.CT_WMQ); IConnectionFactory connectionProperties = factory.CreateConnectionFactory(); connectionProperties.SetIntProperty(XMSC.WMQ_CLIENT_RECONNECT_OPTIONS, XMSC.WMQ_CLIENT_RECONNECT_Q_MGR); connectionProperties.SetStringProperty(XMSC.WMQ_CONNECTION_NAME_LIST, String.Format("{0}({1}),{2}({3})", element.Host1,

Sending message to Multi Instance Queue Manager with XMS

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tomcat 启动参数 Xms, Xmx, XX:MaxNewSize, XX:PermSize, -XX:MaxPermSize, Djava.awt.headless

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在 tomcat/bin/catalina.sh 的第一行#!/bin/sh 下添加 JAVA_OPTS="-server -Xms512m -Xmx1024m -XX:MaxNewSize=512m -XX:PermSize=128m -XX:MaxPermSize=256m -Djava.awt.headless=true" -Xms256m JVM初始分配的堆内存, 生产环境建议与Xmx相同, 设为1024m以上 -Xmx512m JVM最大允许分配的堆内存, 生产环境建议设为1024m以上 -Xss128k 线程堆栈大小, JDK5以上一般设置为256k或以上, 与 -XX:ThreadStackSize 的区别 The former is a standard option -Xss is standard options recognized by the Java HotSpot VM. -XX:ThreadStackSize as other -XX options are not stable and are subject to change without notice. They parse arguments differently -Xss may accept a number with K, M or G suffix; -XX

Is there an MQ/XMS equivalent for the MQ/JMS setTargetClient

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问题 I have a XMS publish app, that is working, but it is including JMS headers as part of the message. My subscribe app is actually a python app, and I was wondering if it is possible to remove the JMS headers from the XMS app. I know it is possible in JMS, but is it possible in C# / XMS. My C# code is fairly simple (with some of the details left out - // Get an instance of factory. factoryFactory = XMSFactoryFactory.GetInstance(XMSC.CT_WMQ); // Create WMQ Connection Factory. cf = factoryFactory

Should each IMessageConsumer or IMessageProducer have its own ISession?

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问题 To make a connection, following objects are needed: IConnection ISession IDestination IMessageConsumer // receiving messages IMessageProducer // sending messages My case is that I have to connect to 5 queues as Consumer and to 5 queues as Producer . After reading a lot, I came to the conclusion that IConnection should be a single-instance object. But where I start asking questions is; Do I have to create new ISession objects for each queue connection? Or can this be a single-instance too?

MessageProducer.send() is too slow for a particular topic

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问题 I've narrowed down the area of the problem I'm facing and it turned out that MessageProducer.send() is too slow when it is created for a particular topic "replyfeserver" : auto producer = context.CreateProducerFromTopic("replyfeserver"); producer->send(textMessage); //it is slow Here the call to send() blocks for up to 55-65 seconds occasionally — almost every after 4-5 calls, and up to 5-15 seconds in general. However, if I use some other topic, say "feserver.action.status" . auto producer =

Get Active QM Instance from Multi Instance Queue Manager and connect

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问题 I have trouble defining multiple hostname for multi-instance queue manager as I am changing a single instance of queue manager to multi-instance queue manager. The existing host is defined in web.config <QueueConfigurationSection> <QueueConfiguration> <add name="SomeQueueHandler" queueManager="QM1" host="99.99.99.01" port="12345" requestQueue="A.B.REQUEST" service="FLATFILE" responseQueue="B.A.RESPONSE" internalResponseQueue="B.A.INTERNAL" channel="A.SVC.SVRCONN" binding="SOAP11TcpBinding"