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Overview

Availability: All

Purpose: The MQIIH structure describes the information that must be present at the start of a message sent to the IMS bridge through WebSphere MQ for z/OS.

Format name: MQFMT_IMS.

Character set and encoding: Special conditions apply to the character set and encoding used for the MQIIH structure and application message data:

• Applications that connect to the queue manager that owns the IMS bridge queue must provide an MQIIH structure that is in the character set and encoding of the queue manager. This is because data conversion of the MQIIH structure is not performed in this case.

• Applications that connect to other queue managers can provide an MQIIH structure that is in any of the supported character sets and encodings; the receiving message channel agent connected to the queue manager that owns the IMS bridge queue converts the MQIIH.
  Note:

  There is one exception to this. If the queue manager that owns the IMS bridge queue is using CICS for distributed queuing, the MQIIH must be in the character set and encoding of the queue manager that owns the IMS bridge queue.

• The application message data following the MQIIH structure must be in the same character set and encoding as the MQIIH structure. Do not use the CodedCharSetId and Encoding fields in the MQIIH structure to specify the character set and encoding of the application message data.

  You must provide a data-conversion exit to convert the application message data if the data is not one of the built-in formats supported by the queue manager.

 

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