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AdministeringIn addition to administering the database server, you can tune performance, replicate data, and archive data.
System administrationThese topics contain concepts, procedures, and reference information for database and database server administrators to use for managing and tuning HCL OneDB™ database servers.
Administrator's GuideThe HCL OneDB™ Administrator's Guide provides the information required to administer HCL OneDB™.
Disk, memory, and process management
Virtual processors and threadsThese topics describe virtual processors, explain how threads run within the virtual processors, and explain how the database server uses virtual processors and threads to improve performance.
Virtual processor classesEach class of virtual processor is dedicated to processing certain types of threads.
MQ messaging virtual processorAn MQ virtual processor is required to use MQ messaging.

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 HCL OneDB™ Administrator's Reference. For more information about MQ messaging, see the HCL OneDB Database Extensions User's Guide.

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