Symptoms

Consider the following scenario. You work with a Windows Communication Foundation (WCF) channel for WebSphere MQ in a Microsoft Host Integration Server 2010 environment. The queue manager is stopped for some reason, such as a connection reset in the transport.

In this scenario, the WCF channel cannot reconnect. Then, each successive read request fails, and you receive reason code 6124 as follows:

A method failed because a required connection to a queue manager was not available, and a connection cannot be established implicitly because the IMQ_IMPL_CONN flag of the ImqQueueManagerbehavior class attribute is FALSE.


Cause

This problem occurs because the error is handled incorrectly when the queue manager is stopped.

Resolution

Cumulative update information

The fix that resolves this problem is included in cumulative update package 8 for Host Integration Server 2010. For more information about how to obtain the cumulative update package, see Cumulative update package 8 for Host Integration Server 2010.

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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