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Object documentation Log Volume Locate the document in its SAP Library structure

The volumes in which all changes to database content are recorded by the Log Writer are called log volumes. All log volumes form the log area.

Managing Log Volumes

You can configure one or more log volumes when you install a new database instance.

During database operation, you can add new log volumes. The number of log volumes is limited by the general database parameter MAXLOGVOLUMES.

Database Manager GUI: SAP DB 7.4, section Managing Database Instances
Database Manager CLI: SAP DB 7.4, section Adding a Volume

Log Backups and Log Settings

The log entries are needed to allow database content to be restored if a media device fails. To ensure uninterrupted and secure database operation, you must ensure that there is always enough space available in the log area, and that the log entries are regularly backed up.

You should therefore always perform log backups or activate the automatic log backup. You should therefore also choose the corresponding log settings.

You must match the size of the log segments, the size of the log volume, and the capacity of the backup media to each other.

 

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