The following configuration parameters affect backup and restore:
The BAR_IDLE_TIMEOUT configuration parameter specifies the maximum number of minutes that an onbar-worker process is idle before it is shut down.
The BAR_MAX_BACKUP configuration parameter specifies the maximum number of backup processes per ON–Bar command. To control parallel execution of ON–Bar processes, use this configuration parameter.
BAR_NB_XPORT_COUNT specifies the number of shared-memory data buffers for each backup or restore process. BAR_PROGRESS_FREQ specifies in minutes how frequently the backup or restore progress messages display in the activity log. BAR_XFER_BUF_SIZE specifies the size in pages of the buffers.
For more information about these configuration parameters, see the IBM Informix: Backup and Restore Guide.
The LTAPEBLK, LTAPEDEV, and TAPESIZE parameters specify the block size, device, and tape size for logical-log backups made with ontape.The TAPEBLK configuration parameter specifies the block size for database backups made with ontape, onload, and onunload. TAPEDEV specifies the tape device. TAPESIZE specifies the tape size for these backups. For information about these utilities and specific recommendations for backup-and-restore operations, see the IBM Informix: Backup and Restore Guide.
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