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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.
Performance GuideThe HCL OneDB™ Performance Guide describes how to configure and operate your HCL OneDB™ database server to improve overall system throughput and to improve the performance of SQL queries.
Effect of configuration on CPU utilizationThe combination of operating-system and HCL OneDB™ configuration parameters can affect CPU utilization. You can change the settings of the HCL OneDB™ configuration parameters that directly affect CPU utilization, and you can adjust the settings for different types of workloads.
Configuration parameters and environment variables that affect CPU utilizationSome configuration parameters and environment variables affect CPU utilization. You might need to adjust the settings of these parameters and variables when you consider methods of improving performance.
Setting the SINGLE_CPU_VP configuration parameter when using one CPU VPIf you are running only one CPU VP, set the SINGLE_CPU_VP configuration parameter to 1. Otherwise, set this parameter to 0.

Setting the SINGLE_CPU_VP configuration parameter when using one CPU VP

If you are running only one CPU VP, set the SINGLE_CPU_VP configuration parameter to 1. Otherwise, set this parameter to 0.

Important: If you set the SINGLE_CPU_VP parameter to 1, the value of the num option of the VPCLASS configuration parameter must also be 1.

Note: The database server treats user-defined virtual-processor classes (that is, VPs defined with VPCLASS) as if they were CPU VPs. Thus, if you set SINGLE_CPU_VP to nonzero, you cannot create any user-defined classes.

When you set the SINGLE_CPU_VP parameter to 1, you cannot add CPU VPs while the database server is in online mode.