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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.
SDS_TIMEOUT configuration parameterUse the SDS_TIMEOUT configuration parameter to specify the amount of time in seconds that the primary server in a high-availability cluster will wait for a log-position acknowledgment to be sent from a shared disk (SD) secondary server.

SDS_TIMEOUT configuration parameter

Use the SDS_TIMEOUT configuration parameter to specify the amount of time in seconds that the primary server in a high-availability cluster will wait for a log-position acknowledgment to be sent from a shared disk (SD) secondary server.

onconfig.std value: SDS_TIMEOUT 20
if not present: 10
values: 2 - 2147483647
units: seconds
takes effect: After you edit your onconfig file and restart the database server.; When you reset the SDS_TIMEOUT value dynamically in your onconfig file by running the onmode -wf command.; When you reset the SDS_TIMEOUT value in memory by running the onmode -wm command.

Usage

If no log-position acknowledgment is received from the SD secondary server in the specified amount of time, the primary server will disconnect from the SD secondary server and continue. After waiting for the number of seconds specified in the SDS_TIMEOUT configuration parameter setting, the primary server will start removing SD secondary servers, if page flushing has timed out while waiting for an SD secondary server.

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