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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.
User-defined classes of virtual processorsYou can define special classes of virtual processors to run user-defined routines or to run a DataBlade® module.

User-defined classes of virtual processors

You can define special classes of virtual processors to run user-defined routines or to run a DataBlade® module.

User-defined routines are typically written to support user-defined data types. If you do not want a user-defined routine to run in the CPU class, which is the default, you can assign it to a user-defined class of virtual processors (VPs). User-defined classes of virtual processors are also called extension virtual processors.

These topics provide the following information about user-defined virtual processors:

When to run a C-language UDR in a user-defined VP instead of in the CPU VP
How to assign a C-language UDR to a particular user-defined VP class
How to add and drop user-defined VPs when the database server is in online mode