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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.
SESSION_LIMIT_MEMORY configuration parameterThe SESSION_LIMIT_MEMORY configuration parameter specifies the maximum amount of memory that a session can allocate. This limit does not apply to a user who holds administrative privileges, such as user informix or a DBSA user.

SESSION_LIMIT_MEMORY configuration parameter

The SESSION_LIMIT_MEMORY configuration parameter specifies the maximum amount of memory that a session can allocate. This limit does not apply to a user who holds administrative privileges, such as user informix or a DBSA user.

onconfig.std value: 0 (off)
if not present: 0 (off)
values: 20480 - 2147483648
units: KB
takes effect: After you edit your onconfig file and restart the database server.

Usage

The SESSION_LIMIT_MEMORY configuration parameter limits how much memory a session can allocate, and can prevent individual sessions from monopolizing system resources.

The database server terminates a session that exceeds the memory limit, puts a message in the database server message log, and triggers the event alarm 21016.

The session_limit_memory tenant database property set through the tenant create or tenant update SQL API command takes precedent over the SESSION_LIMIT_MEMORY configuration parameter setting.

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