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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.
Overview of backup and restoreThese topics provide an overview of backup and restore concepts. They also provide information about planning for backup and restore operations.
Backup and restore conceptsHCL OneDB™ provides two utilities for backing up and restoring database server data. Both utilities back up and restore storage spaces and logical logs. However, they support different features and it is important to know the differences. These topics explain basic backup and restore concepts for HCL® OneDB® database servers and compares the ON-Bar and ontape utilities.
Recovery systemA recovery system, which includes backup and restore systems, enables you to back up your database server data and later restore it if your current data becomes corrupted or inaccessible.
Restore systemsA restore recreates database server data from backed-up storage spaces and logical-log files.

Restore systems

A restore recreates database server data from backed-up storage spaces and logical-log files.

A restore recreates database server data that has become inaccessible because of any of the following conditions:

You need to replace a failed disk that contains database server data.
A logic error in a program has corrupted a database.
You need to move your database server data to a new computer.
A user accidentally corrupted or destroyed data.

To restore data up to the time of the failure, you must have at least one level-0 backup of each of your storage spaces from before the failure and the logical-log files that contain all transactions since these backups.