Loading the WebSphere MQ library to support SNA

You determine the WebSphere MQ library loaded to support SNA with the MQCommLibrary parameter in the qm.ini file. On WebSphere MQ the LU62 stanza applies. MQCommLibrary is the only attribute that can be specified:

MQCommLibrary=amqcc62a|amqcc62s

This attribute specifies the WebSphere MQ library loaded to support SNA for WebSphere MQ V5.3.

SNAP-IX support is provided if amqcc62a is loaded. This is the default if this attribute is not specified.

SunLink Version 9.1 support is provided if amqcc62s is loaded.

Refer to the WebSphere MQ System Administration Guide book for a full description of the LU62 stanza in the qm.ini file.

If you are migrating from previous versions of MQSeries other than MQSeries V5.2, to use SunLink 9.1, you must correctly specify the LU62 stanza entry to be used for SNA communication. If you do not specify the LU62 stanza entry correctly, the following errors are returned:

• When attempting to start an outbound LU62 channel, message AMQ6175 is returned, and the following entry appears in the queue manager error log:

  AMQ9220: The APPC communications 
  program could not be loaded
   
  Explanation:
  The Attempt to load the APPC library or procedure 'amqcc62a' failed with error code 536895861
  

• When attempting to start an inbound LU62 channel, the following errors are produced on the sending machine:

  AMQ9201: Allocate failed to host 'TEST'
  

  AMQ9999: Channel program ended abnormally
  

  See WebSphere MQ Messages for details of AMQ9201, the contents of which are produced in the sending queue manager error log.