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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.
ON-Bar backup and restore system
Restore data with ON-BarYou can use the ON-Bar utility to restore data that was backed up by the ON-Bar utility.
onbar -r syntax: Restoring dataTo run a complete restore, use onbar -r command.
Recreating chunk files during a restoreIf the disk or file system fails, one or more chunk files might be missing from the dbspace. Use the -O option to recreate missing chunk files and any necessary directories during a restore.
Restoring when using raw chunksYou can recreate missing raw chunk files during a restore.

Restoring when using raw chunks

You can recreate missing raw chunk files during a restore.

Procedure

To restore when using raw chunks:

Install the new disk.
For UNIX™, if you use symbolic links to raw devices, create new links for the down chunks that point to the newly installed disk.
ON-Bar restores the chunk file to where the symbolic link points.
Issue the onbar -r space command to restore the dbspace.