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| Mq .NET client "unknown object error" when accessi |
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| swood |
 Posted: Sun Jan 16, 2005 1:22 pm Post subject: Mq .NET client "unknown object error" when accessi |
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Joined: 10 Dec 2004
Posts: 20
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This implementation is currently a windows service running under an administrators' account that matches the MQServer's account. This was changed to a windows app for debugging and I am now logging in under the matching user name and password.
I am recieving an unknown object error when trying to access a queue on the customer's MQ Server. I previously was recieving a 2059 on the connection to the queue manager but this was solved by making the user names match on client and server. I am presuming that this means the qm connection is okay now (qm object returned has a property isConnected=true). The current error is thrown at the AccessQueue method call, not the Put call.
The unknown object error does not happen when I use the amqputc test app.
I see some code that sets properties(hostname,port,channel) in the MQEnvironment class, is this necessary if the MQSERVER=channel/server(port) environment variable is set for windows? I am currently using a hashtable but I did run into a problem setting the username and password in the hashtable ( didn't work ) and ended up creating the matching username and password between servers.
connection code fragment:
Dim ConSettings As Hashtable = New Hashtable()
ConSettings.Add(IBM.WMQ.MQC.CHANNEL_PROPERTY, _ClientChannel)
ConSettings.Add(IBM.WMQ.MQC.HOST_NAME_PROPERTY, _HostName)
ConSettings.Add(IBM.WMQ.MQC.PORT_PROPERTY, _PortNumber)
_QM = New MQQueueManager(_QueueManager, _ConSettings)
put message code fragment:
_pmo = New MQPutMessageOptions()
_pmo.Options = 0
_pmo.Options = _pmo.Options + MQC.MQPMO_FAIL_IF_QUIESCING _
+ MQC.MQPMO_NO_SYNCPOINT _
+ MQC.MQPMO_DEFAULT_CONTEXT
_Msg = New MQMessage() 'create a buffer to hold the outgoing message
With _Msg
.MessageId = MQC.MQCI_NONE
.CorrelationId = MQC.MQCI_NONE
.Feedback = MQC.MQFB_QUIT
.Expiry = -1
.Format = MQC.MQFMT_STRING
.MessageType = MQC.MQMT_DATAGRAM
.Persistence = MQC.MQPER_NOT_PERSISTENT
.Priority = 0
.WriteString(message)
End With
Dim _Queue As MQQueue = _QM.AccessQueue(QueueName, _pmo.Options)
_Queue.Put(_Msg, _pmo)
'_QM.Put(QueueName, _QueueManager, _Msg, _pmo)
Any help would be greatly appreciated
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| jefflowrey |
| Posted: Sun Jan 16, 2005 1:35 pm Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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Where do you set QueueName?
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| fjb_saper |
| Posted: Sun Jan 16, 2005 1:43 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Are you sure you are using the right case for the queue name.
Must be set just like it shows when doing a display with runmqsc
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| swood |
| Posted: Sun Jan 16, 2005 6:17 pm Post subject: |
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Novice
Joined: 10 Dec 2004
Posts: 20
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Sorry,
this is all triggered by a windows service that uses this component to communicate with the MQServer. On the specified hour, the service will pull data from a database using parameters from an entry in a Queue table and send it to the MQServer for processing. The service will try to connect a specified amount of times before notifying of the error so...the service creates the component, calls the connect method and when it returns with a connection it draws the message data from the db and puts it in the MQServer Queue by calling the component's PutMessage method. On successful completion the entry in the Queue table in the db is removed.
The hostname(ip address), Queue Manager name( all caps ), channel name( all caps),and port number, are passed to the constructor on creation.
Sub New(ByVal HostName As String, ByVal QueueManager As String, ByVal ClientChannel As String, ByVal PortNumber As Integer, ByVal RetryCount As Integer, ByVal WaitInterval As Integer)
_HostName = HostName
_QueueManager = QueueManager
_PortNumber = PortNumber
_RetryCount = RetryCount
_WaitInterval = WaitInterval
_ClientChannel = ClientChannel
End Sub
The QueueName (all caps), message ( string ), and message id (integer) are passed to the PutMessage method after the message is created by the winservice
Public Sub PutMessage(ByVal message As String, ByVal QueueName As String, ByVal MessageID As String)
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| jefflowrey |
| Posted: Mon Jan 17, 2005 3:51 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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Okay.
Lemme try again.
You likely have set QueueName incorrectly.
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| swood |
| Posted: Mon Jan 17, 2005 6:31 am Post subject: |
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Novice
Joined: 10 Dec 2004
Posts: 20
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Okay fixed the problem,
it seems to be in the way I set up the PutMessageOptions.
...Originally tried...
_pmo = New MQPutMessageOptions()
_pmo.Options = 0
_pmo.Options = _pmo.Options + MQC.MQPMO_FAIL_IF_QUIESCING _
+ MQC.MQPMO_NO_SYNCPOINT _
+ MQC.MQPMO_DEFAULT_CONTEXT
_QM.Put(QueueName,_QueueManager,_Msg,_pmo)
...This resulted in the 2085 unknown object error...
...Then tried to break up the calls to make a put, for debugging...
Dim _Queue as MQQueue=_MQ.AccessQueue(QueueName,_pmo)
_Queue.Put(_Msg,_pmo)
...This resulted in the 2085 unknown object error at the AccessQueue method call...
...Got some rest over the weekend and checked the amqsput.vb example for the basic put code since it works from the command line test app...
...This fixed it...
With _Msg
.Format = MQC.MQFMT_STRING
.WriteString(message)
End With
Dim _Queue as MQQueue=_MQ.AccessQueue(QueueName,MQC.MQPMO_FAIL_IF_QUIESCING + MQC.MQOO_OUTPUT)
_pmo = New MQPutMessageOptions()
_Queue.Put(_Msg,_pmo)
...It appears that the AccessQueue method must set up the pmo options and the Put just uses an empty instance of the PutMessageOptions class??
...Anyway, it works now but I'm sure the message properties and pmo options need improvement...any suggestions in this area?
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