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

The volume memory area used for logging is called the log area. A log area can extend across several log volumes.

Note

For information about the log concept, see Background Knowledge SAP DB, Log Concept

Mirroring the Log Area

For security, the log area should always be mirrored. If possible, you should mirror the log area on a hardware basis.
If hardware-based mirroring is not possible, you can use an appropriate log mode setting. In a production database system, make sure that redo log management is always activated, and that the log area cannot be overwritten until it has been backed up (Log Settings).

Backing Up the Log Area

A full log causes the database to stop. Therefore, you must always carry out log backups in good time. For this purpose, activate automatic log backup.

In log backups, the log area is not saved as a whole. Instead, it is saved in backup units, called log segments.

 

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