Home
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.
AUTO_AIOVPS configuration parameterThe AUTO_AIOVPS configuration parameter enables the database server to automatically increase the number of asynchronous I/O virtual processors (AIO VPs) and page cleaner threads when the database server detects that the I/O workload outpaced the performance of the existing AIO VPs.

AUTO_AIOVPS configuration parameter

The AUTO_AIOVPS configuration parameter enables the database server to automatically increase the number of asynchronous I/O virtual processors (AIO VPs) and page cleaner threads when the database server detects that the I/O workload outpaced the performance of the existing AIO VPs.

onconfig.std value: AUTO_AIOVPS 1; Not set. If the AUTO_TUNE configuration parameter is set to 1, AIO VPs and page cleaner threads are automatically increased.
values: 0 = Off
1 = On
takes effect: After you edit your onconfig file and restart the database server.; When you reset the value dynamically in your onconfig file by running the onmode -wf command.; When you reset the value in memory by running the onmode -wm command.; If an AUTO_AIOVPS value is not set in your current onconfig file and you edit the AUTO_TUNE configuration parameter and restart the database server

Usage

The VPCLASS aio configuration parameter controls the number of AIO VPs, If the VP aio parameter is not set in the onconfig file, the initial number of AIO VPs the database server starts when AUTO_AIOVPS is enabled is equal to the number of AIO chunks. The maximum number of AIO VPs the database server can start if VP aio is not set is 128.

Have feedback?
Google Analytics is used to store comments and ratings. To provide a comment or rating for a topic, click Accept All Cookies or Allow All in Cookie Preferences in the footer of this page.