Supported only on WebSphere MQ for z/OS.
The queue attribute, IndexType, specifies the type of index that the queue manager maintains to increase the speed of MQGET operations on the queue.
You have five options:
Value | Description |
---|---|
NONE | No index is maintained. Use this when retrieving messages sequentially sequentially (see Priority). |
GROUPID | An index of group identifiers is maintained. You must use this index type if you want logical ordering of message groups (see Logical and physical ordering). |
MSGID | An index of message identifiers is maintained. Use this when retrieving messages using the MsgId field as a selection criterion on the MQGET call (see Getting a particular message). |
MSGTOKEN | An index of message tokens is maintained. Use this when retrieving messages using the MsgToken field as a selection criterion on the MQGET call (see WebSphere MQ Workflow). |
CORRELID | An index of correlation identifiers is maintained. Use this when retrieving messages using the CorrelId field as a selection criterion on the MQGET call (see Getting a particular message). |
For a full description of the IndexType attribute, see the WebSphere MQ Application Programming Reference. For conditions needed to change the IndexType attribute, see the WebSphere MQ Script (MQSC) Command Reference.
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