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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 GuideThe HCL OneDB™ Administrator's Guide provides the information required to administer HCL OneDB™.
Disk, memory, and process management
Manage shared memory
Monitor shared memoryThese topics describe how to monitor shared-memory segments, the shared-memory profile, and the use of specific shared-memory resources (buffers, latches, and locks).
Monitor shared-memory segmentsMonitor the shared-memory segments to determine the number and size of the segments that the database server creates.

Monitor shared-memory segments

Monitor the shared-memory segments to determine the number and size of the segments that the database server creates.

The database server allocates shared-memory segments dynamically, so these numbers can change. If the database server is allocating too many shared-memory segments, you can increase the SHMVIRTSIZE configuration parameter. For more information, see the topics about configuration parameters in the HCL OneDB™ Administrator's Reference.

The onstat -g seg command lists information for each shared-memory segment, including the address and size of the segment, and the amount of memory that is free or in use. For an example of onstat -g seg output, see information about the onstat utility in the HCL OneDB Administrator's Reference.