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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.
Performance monitoring and the tools you useYou can use performance monitoring tools to create a performance history, to monitor database resources at scheduled times, or to monitor ongoing transaction or query performance.
Monitor sessions and queriesMonitoring sessions and threads is important for sessions that perform queries as well as sessions that perform inserts, updates, and deletes. Some of the information that you can monitor for sessions and threads allows you to determine if an application is using a disproportionate amount of the resources.
Monitoring memory usage for each sessionYou can use some specific onstat -g command arguments to get memory information for each session.

Monitoring memory usage for each session

You can use some specific onstat -g command arguments to get memory information for each session.

Use the following command arguments to get memory information for each session.


onstat -g command argument	Description
ses	Displays one-line summaries of all active sessions
ses session id	Displays session information by session id
sql session id	Displays SQL information by session If you omit session id, this argument displays summaries of all sessions.
stm session id	Displays amount of memory used by each prepared SQL statement in a session If you omit session id, this argument displays information for all prepared statements.

For examples and discussions of session-monitoring command-line utilities, see Monitoring memory usage for each session and Monitor sessions and threads.