MQ messaging virtual processor

An MQ virtual processor is required to use MQ messaging.

When you perform MQ messaging transactions, an MQ virtual processor is created automatically.

An MQ virtual processor runs without yielding; it processes one operation at a time. To perform multiple MQ messaging transactions simultaneously, create additional MQ virtual processors.

Use the VPCLASS configuration parameter with the MQ keyword to configure MQ virtual processors. For example, to add five MQ virtual processors, add the following line to the onconfig and restart the database server:
VPCLASS mq,noyield,num=5

For more information about the VPCLASS configuration parameter, see the IBM® Informix® Administrator's Reference. For more information about MQ messaging, see the IBM Informix Database Extensions User's Guide.

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