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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.
Administrative Utilities
The onstat utilityThe onstat utility reads shared-memory structures and provides statistics about the database server at the time that the command runs.
onstat -g monitoring optionsThe options that you can use with onstat -g command are used for support and debugging only. You can include only one of these options in the onstat -g command.
onstat -g stm command: Print SQL statement memory usage Use the onstat -g stm command to display the memory that each prepared SQL statement uses.

onstat -g stm command: Print SQL statement memory usage

Use the onstat -g stm command to display the memory that each prepared SQL statement uses.

By default, only the DBSA can view onstat -g stm syssqltrace information. However, when the UNSECURE_ONSTAT configuration parameter is set to 1, all users can view this information.

Figure 1: Syntax:

To display the memory for only one session, specify the session ID in the onstat -g stm command.

Example output

Figure 2: onstat -g stm command output


session   65 ----------------------------------------------------------
 sdblock  heapsz  statement ('*' = Open cursor)
 aad8028   16544   SELECT COUNT ( * ) FROM ssc1 WHERE t1_char = ? 
 AND t1_key = ? AND t1_short = ?

Output description

sdblock: Address of the statement descriptor block
heapsz: Size of the statement memory heap
statement: Query text

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