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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 ReferenceThe HCL OneDB™ Administrator's Reference includes comprehensive descriptions of HCL OneDB™ configuration parameters, the system-monitoring interface (SMI) tables in the sysmaster database, the syntax of database server utilities such as onmode and onstat, logical-log records, disk structures, event alarms, and unnumbered error messages.
Configuring and monitoring HCL OneDB™
Database configuration parametersThe HCL OneDB™ database server uses a configuration file, which is called the onconfig file, during initialization. This file contains default configuration parameter values. You can modify the parameter values to improve performance and other characteristics of the instance or database.
SINGLE_CPU_VP configuration parameterThe SINGLE_CPU_VP configuration parameter specifies whether or not the database server is running with only one CPU virtual processor.
VPCLASS Values and the SINGLE_CPU_VP Configuration ParameterHCL OneDB™ treats user-defined virtual-processor classes as if they were CPU virtual processors. If you set the SINGLE_CPU_VP configuration parameter to a nonzero value, you cannot create any user-defined virtual-processor classes.

VPCLASS Values and the SINGLE_CPU_VP Configuration Parameter

HCL OneDB™ treats user-defined virtual-processor classes as if they were CPU virtual processors. If you set the SINGLE_CPU_VP configuration parameter to a nonzero value, you cannot create any user-defined virtual-processor classes.

Using a user-defined VPCLASS

If you set this configuration parameter to a nonzero value and then attempt to bring up the database server with a user-defined VPCLASS, you receive the following error message, and the database server initialization fails:

oninit: Cannot have SINGLE_CPU_VP non-zero and user-defined VP classes

Using the cpu VPCLASS

If you set this configuration parameter to a nonzero value and then attempt to bring up the database server with the VPCLASS cpu value for num set to a value greater than 1, you receive the following error message, and the database server initialization fails:

Cannot have SINGLE_CPU_VP non-zero and CPU VPs greater than 1.

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