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Message
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| vikasdottv |
 Posted: Thu Mar 04, 2010 10:07 am Post subject: second app on same PC calling MQQueueManager.connect err2012 |
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Newbie
Joined: 04 Mar 2010
Posts: 4
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Hi,
I have two applications consumer and generator.
Consumer is written using C++.
Generator is written using C#
Both are not able to run at the same time at the point when they try to connect to same MQ Queue Manager. Whichever I run first, successfully connect to the MQ queue manager but second one gives error reason code 2012 and completion code 2. MQRC_ENVIRONMENT_ERROR
Could you please advise? I am trying to run both from Windows XP PC.
Please see my code below.
Consumer C++ code
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channel_.setChannelName(addr_.getChannel().c_str()); //It will resolve to channel_.setChannelName("VINF01");
channel_.setTransportType(MQXPT_TCP);
std::stringstream connectionName;
connectionName << addr_.getMachineName() << "(" << addr_.getPort() << ")" << std::ends;
channel_.setConnectionName(connectionName.str().c_str()); // channel_.setConnectionName("vs256v1.cm.com(1005)");
ImqQueueManager queueMgr;
queueMgr_.setChannelReference(channel_);
queueMgr_.setName(addr_.getQManager().c_str()); //queueMgr_.setName("DSLNDV04");
queueMgr_.setConnectOptions(MQCNO_NONE);
ImqBoolean retcode = queueMgr_.connect();
if (!retcode)
{
std::stringstream errorStream;
Generator C# code
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Hashtable queueProperties = new Hashtable();
queueProperties[MQC.HOST_NAME_PROPERTY] = reqHostname_; //"vs256v1.cm.com"
queueProperties[MQC.PORT_PROPERTY] = reqPort_; //1005
queueProperties[MQC.CHANNEL_PROPERTY] = reqChannel_; //"VINF01"
IBM.WMQ.MQQueueManager mqQMgrReq_;
mqQMgrReq_ = new MQQueueManager(reqQueueManagerName_, queueProperties);
//here reqQueueManagerName_="DSLNDV04"
Thanks & Regards
Vikas Agrawal |
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| fjb_saper |
| Posted: Thu Mar 04, 2010 12:07 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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The MQEnvironment is a singleton pattern in your CLR.
You need to use alternate constructors to the queue manager like properties and stuff.
Have fun 
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| vikasdottv |
| Posted: Thu Mar 04, 2010 2:31 pm Post subject: |
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Newbie
Joined: 04 Mar 2010
Posts: 4
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| fjb_saper wrote: |
The MQEnvironment is a singleton pattern in your CLR.
You need to use alternate constructors to the queue manager like properties and stuff.
Have fun |
Sorry, could you explain with an example since I am not much familiar with C#. |
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| fjb_saper |
| Posted: Thu Mar 04, 2010 9:29 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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A singleton is like a static modifier to the whole class. This means that there is only one MQEnvironment for the duration of the program / CLR. The values for this class are then frozen while a connection is in effect.
So in order to use multiple client connections simultaneously (at the same time) you need to use a different constructor for your queue manager, or run each connection in a different CLR. I suggest you use the one that accepts a properties class.
Have fun
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| vikasdottv |
| Posted: Fri Mar 05, 2010 1:48 am Post subject: |
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Newbie
Joined: 04 Mar 2010
Posts: 4
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Thanks. I know the Singleton. Singleton will apply only for that application. My consumer (C++) and generator (C#) are two different applications written using two different languages. Any one application works when second application is not running irrespective of order.
Both are two different application hence I assume they use their own address space given by opearting system and C++ app does not have any concept of CLR anyway.
One more thing to note. I ran two different C++ application connecting to same Queue manager and that works. It is the problem only when I try to connect to same queue manager using two applications, one from C++ and second one from C# DotNet.
Sorry, still i am not clear what you mean. Could you give the excat code if possible?
Stack Trace:
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at IBM.WMQ.MQBase.throwNewMQException()
at IBM.WMQ.MQQueueManager.Connect(String queueManagerName)
at IBM.WMQ.MQQueueManager..ctor(String queueManagerName, String Channel, String ConnName)
at DotNetMQLibrary.vikMQLibrary.connect() in D:\Vikas\vikMQLibrary.cs:line 166
amqmdnet.dll details (used by generator C# dotnet app)
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Assembly Version: 1.0.0.3
Comments: WebSphere MQ Classes for .NET
File Version: 1.0.0.3
Language: Langauge Neutral
Product Version: 6.0.2.3
imqb23vn.dll details (used by consumer C++ app)
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File Version: 6,002,0300,08028
Comments: TIBM WebSphere MQ Classes for Windows
Language: English (United States)
Level: p600-203-080123
Product Version: 6,0,2,3
MQ Client installed on my PC
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H:\>dspmqver
Name: WebSphere MQ
Version: 6.0.2.1
CMVC level: p600-201-070323
BuildType: IKAP - (Production)
Regards
Vikas |
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| fjb_saper |
| Posted: Fri Mar 05, 2010 1:15 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Make sure you have no version mismatch with your MQ clients (dlls).
I would only reference the MQ libraries and not deploy with the program.
Your response is somewhat confusing because in .NET you have both C, C++, C# and J# coexisting in the CLR. The CLR is the equivalent of the JRE in java.
Have fun
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| vikasdottv |
| Posted: Sun Mar 07, 2010 10:23 am Post subject: |
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Newbie
Joined: 04 Mar 2010
Posts: 4
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My C++ application is developed using VC++ 6.0 and C# app is using Visual Studio 2005.
How do I find out the exact versions of the dlls being used by both applications? |
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| fjb_saper |
| Posted: Sun Mar 07, 2010 12:55 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| vikasdottv wrote: |
My C++ application is developed using VC++ 6.0 and C# app is using Visual Studio 2005.
How do I find out the exact versions of the dlls being used by both applications? |
That's a question for a windows forum...
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