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| Error connection to QManager using vb.net |
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| ekoks |
 Posted: Mon Feb 22, 2016 5:28 am Post subject: Error connection to QManager using vb.net |
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Newbie
Joined: 22 Feb 2016
Posts: 5
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Hello,
I'm writing a VB.Net program tom monitor the queue depth of several queues. On my development machine, my code is working. Here I've installed MQ Client.
However on another machine, where the program will be running finally, I'm getting an error when connection to the MQ Manager.
I've copied the amqmdnet.dll and the amqmdxcs.dll to the target machine
and registered them in the GAC using gacutil.
I don't want to install the MQ Client on the target machine.
This is my error:
Unhandled Exception: System.TypeInitializationException: The type initializer for 'IBM.WMQ.Nmqi.UnmanagedNmqiMQ' threw an exception. ---> System.NullReferenceException: Object reference not set to an instance of an object.
at IBM.WMQ.Nmqi.NativeManager.InitializeNativeApis(String mode)
at IBM.WMQ.Nmqi.UnmanagedNmqiMQ..cctor()
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, StackCrawlMark& stackMark)
at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
at System.Reflection.Assembly.CreateInstance(String typeName, Boolean ignoreCase, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
at IBM.WMQ.Nmqi.NmqiEnvironment.GetInstance(String name)
at IBM.WMQ.Nmqi.NmqiEnvironment.GetMQI(Int32 id)
at IBM.WMQ.MQQueueManager.Connect(String queueManagerName)
at IBM.WMQ.MQQueueManager..ctor(String queueManagerName, String Channel, String ConnName)
at MQQueueDepth.main.Main()
This is my simplified code:
| Code: |
Imports IBM.WMQ
Module main
Sub Main()
Dim QueueName As String
Dim QueueManagerNAme As String
Dim ChannelInfo As String
Dim ConnectionName As String
Dim queuemanager As MQQueueManager
Dim queue As MQQueue
Dim intQueueDepth As Integer
QueueName = "SomeQueue"
QueueManagerNAme = "QMName"
ChannelInfo = "SYSTEM.ADMIN.SVRCONN"
ConnectionName = "hostname(portnumber)"
Try
queuemanager = New MQQueueManager(QueueManagerNAme, ChannelInfo, ConnectionName)
' queue = queuemanager.AccessQueue(QueueName, MQC.MQOO_INPUT_AS_Q_DEF + MQC.MQOO_FAIL_IF_QUIESCING + MQC.MQOO_INQUIRE)
queue = queuemanager.AccessQueue(QueueName, MQC.MQOO_FAIL_IF_QUIESCING + MQC.MQOO_INQUIRE)
intQueueDepth = queue.CurrentDepth
MsgBox("Queuedepth for queue " & QueueName & " : " & intQueueDepth.ToString)
queue.Close()
queuemanager.Disconnect()
Catch e As MQException
MsgBox("Exception Occurred: " & vbCrLf & e.Message)
End Try
End Sub
End Module
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As I mentioned before, this code is working on my development PC.
Does anybody know what my I'm doing wrong ?
best regards,
Eduard Koks
Last edited by ekoks on Tue Feb 23, 2016 1:24 am; edited 1 time in total |
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| fjb_saper |
| Posted: Mon Feb 22, 2016 5:31 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20697
Location: LI,NY
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Yes. Look up the infocenter on how to create a MANAGED connection.
To use an Unmanaged connection, like you're doing, you need the MQ Client.
Have fun 
_________________
MQ & Broker admin |
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| PeterPotkay |
| Posted: Mon Feb 22, 2016 3:47 pm Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7716
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| ekoks |
| Posted: Tue Feb 23, 2016 1:22 am Post subject: |
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Newbie
Joined: 22 Feb 2016
Posts: 5
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Solved my problem. As stated by fjb_saper, when MQ Client is not installed, I had to create a managed connection.
Here is my new code:
| Code: |
Module main
Sub Main()
Dim QueueName As String
Dim QueueManagerName As String
Static MQproperties As Hashtable = New Hashtable
Dim queuemanager As MQQueueManager
Dim queue As MQQueue
Dim intQueueDepth As Integer
QueueName = "SomeQueue"
QueueManagerName = "QMName" ' Name of the QManager
' Setup the MQ Environment
MQEnvironment.Hostname = "myHost" ' IP Address or name of the host to connect to
MQEnvironment.Port = "99999" ' Portnumber
MQEnvironment.Channel = "SYSTEM.ADMIN.SVRCONN" ' Channel name
' Be sure to create a managed connection, necessary when MQ Client is not installed
MQproperties.Add(MQC.TRANSPORT_PROPERTY, MQC.TRANSPORT_MQSERIES_MANAGED)
Try
queuemanager = New MQQueueManager(QueueManagerName, properties)
queue = queuemanager.AccessQueue(QueueName, MQC.MQOO_FAIL_IF_QUIESCING + MQC.MQOO_INQUIRE)
intQueueDepth = queue.CurrentDepth
MsgBox("Queuedepth for queue " & QueueName & " : " & intQueueDepth.ToString)
queue.Close()
queuemanager.Disconnect()
Catch e As MQException
MsgBox("Exception Occurred: " & vbCrLf & e.Message)
End Try
End Sub
End Module
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Thanks for your cooperation. |
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