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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.
ontape backup and restore system
Configure ontapeYou configure the ontape utility by setting configuration parameters for backups of storage spaces and logical logs.
Set configuration parameters for the ontape utilityThe ontape utility uses eight configuration parameters in the onconfig file. Two of the configuration parameters specify filter programs for transforming data during backup and restore; the other six are used to create storage-space and logical-log backups.
Specify the tape-block-sizeUse the TAPEBLK and LTAPEBLK configuration parameters to set the largest block size, in kilobytes, that your tape device permits.

Specify the tape-block-size

Use the TAPEBLK and LTAPEBLK configuration parameters to set the largest block size, in kilobytes, that your tape device permits.

When you set the tape parameter to /dev/null, the corresponding block size is ignored.

The ontape utility does not check the tape device when you specify the block size. Verify that the tape device can read the block size that you specified. If not, you cannot restore the tape.