User Guide

SAP AG November 2002
Incremental Data Backup
In an incremental data backup [Page 131], all the pages of the data volumes [Page 130]
changed since the last complete data backup [Page
40] are backed up to the backup medium
[Page 127] you specified.
See also:
Backup Strategy [Page
39]
Saving Data Backups [Page
41]
Parallel Backup
Parallel processing is possible for a data backup [Page 131]. In this case, a group of parallel
backup media [Page 138] must be defined.
See also:
Backup Strategy [Page
39]
Saving Data Backups [Page
41]
Saving Data Backups
For information on how to save data backups [Page 131], refer to the following
documentation:
• Database Manager GUI: SAP DB 7.4, Section Backup Processes [See SAP DB Library]
• Database Manager CLI: SAP DB 7.4, Section Backing Up and Recovering Database
Instances [See SAP DB Library]
• Database Management in CCMS: SAP DB OLTP → DBA Planning Calendar
Log Backup
In a log backup, the contents of the log area [Page 142] are copied to version files [Page 153]
or backed up using an external backup tool [Page 138].
A version file is generated for each log segment of the log area.
The space originally taken up by the backed up log area becomes free again after the log
backup.
Log Backup Types
• Automatic log backup [Page
126]
• Interactive log backup [Page
139]
The following log backup options are supported for the database system SAP DB:
User Manual: SAP DB 41