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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.
Plan for backup and restoreThese topics describe the planning for backup and restore, for example by planning your recovery strategy and backup system.
Plan a backup system for a production database serverTo plan for adequate backup protection for your data, analyze your database server configuration and activity and the types of backup media available at your installation.
Evaluate hardware and memory resourcesWhen planning your backup system, evaluate your hardware and memory resources.

Evaluate hardware and memory resources

When planning your backup system, evaluate your hardware and memory resources.

Evaluate the following database server and hardware configuration elements to determine which storage manager and storage devices to use:

The number of I/O virtual processors
The amount of memory available and the distribution of processor activity

Also consider temporary disk space needed for backup and restore. The database server uses temporary disk space to store the before images of data that are overwritten while backups are occurring and overflow from query processing that occurs in memory.

When preparing to back up data, make sure that you correctly set the DBSPACETEMP environment variable or parameter to specify dbspaces with enough space for your needs. If there is not enough room in the specified dbspaces, the backup will fail, root dbspace will be used, or the backup will fail after filling the root dbspace.