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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.
DRTIMEOUT configuration parameterUse the DRTIMEOUT configuration parameter to specify the length of time, in seconds, that a database server in a high-availability data-replication pair waits for a transfer acknowledgment from the other database server in the pair. This parameter applies only to high-availability data-replication pairs.

DRTIMEOUT configuration parameter

Use the DRTIMEOUT configuration parameter to specify the length of time, in seconds, that a database server in a high-availability data-replication pair waits for a transfer acknowledgment from the other database server in the pair. This parameter applies only to high-availability data-replication pairs.

onconfig.std value: DRTIMEOUT 30
values: Positive integers
units: Seconds
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.

Usage

Use the following formula to calculate the value to specify for the DRTIMEOUT configuration parameter:

DRTIMEOUT = wait_time / 4

In this formula, wait_time is the length of time, in seconds, that a database server in a high-availability data-replication pair must wait before the server assumes that a high-availability data-replication failure occurred.

For example, you determine that wait_time for your system is 160 seconds. Use the preceding formula to set DRTIMEOUT as follows:

DRTIMEOUT = 160 seconds / 4 = 40 seconds

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