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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 utility to back up and restore database server data. This will 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.
Logical-log backupA logical-log backup is a copy to disk or tape of all full logical-log files. The logical-log files store a record of database server activity that occurs between backups.
Log salvageWhen the database server is offline, you can perform a special logical-log backup, called a log salvage. In a log salvage, the database server accesses the log files directly from disk. The log salvage backs up any logical logs that have not yet been backed up and are not corrupted or destroyed.

Log salvage

When the database server is offline, you can perform a special logical-log backup, called a log salvage. In a log salvage, the database server accesses the log files directly from disk. The log salvage backs up any logical logs that have not yet been backed up and are not corrupted or destroyed.

The log salvage enables you to recover all of your data up to the last available and uncorrupted logical-log file and the last complete transaction.

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