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AdministeringIn addition to administering the database server, you can tune performance, replicate data, and archive data.
Backup and Restore GuideThe HCL OneDB™ Backup and Restore Guide describes how to use the HCL® OneDB® ON-Bar and ontape utilities to back up and restore database server data. These utilities enable you to recover your databases after data is lost or becomes corrupted due to hardware or software failure or accident.
Backup and restore configuration parameter reference
Backup and restore configuration parametersThese topics describe the configuration parameters that you use with the ON-Bar, ontape, and archecker utilities.
ON-Bar and ontape configuration parameters and environment variableMany properties of the ON-Bar and ontape utilities are controlled by configuration parameters in the onconfig file. ON-Bar also has an environment variable.
BAR_NB_XPORT_COUNT configuration parameterUse the BAR_NB_XPORT_COUNT configuration parameter to specify the number of data buffers that each onbar_d process can use to exchange data with the database server.

BAR_NB_XPORT_COUNT configuration parameter

Use the BAR_NB_XPORT_COUNT configuration parameter to specify the number of data buffers that each onbar_d process can use to exchange data with the database server.

onconfig.std value: 20
if value not present: 20
units: Buffers
range of values: 3 to unlimited
takes effect: When ON-Bar starts; When you reset the value dynamically in your onconfig file by running the onmode -wf or equivalent SQL administration API command.

The value of this parameter affects ON-Bar performance. For example, if you set BAR_NB_XPORT_COUNT to 5 and then issue five ON-Bar commands, the resulting 25 ON-Bar processes use a total of 125 buffers.

To calculate the amount of memory that each onbar_d process requires, use the following formula. For information about the page size for your system, see the release notes:

required_memory = (BAR_NB_XPORT_COUNT * BAR_XFER_BUF_SIZE
                   * page_size) + 5 MB