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Background documentation Log Segment Locate the document in its SAP Library structure

When you make log backups, the log area is not stored as a whole, but in backup units called log segments.

The size of the log segments is determined by the general database parameter LOG_SEGMENT_SIZE. It is unrelated to the size of the individual log volumes, but may not exceed the total of all log volumes.

Select the size in such a way as to ensure that enough space remains after a log segment has been backed up, in order to include any changes that have just been made.

User Defined Value

Log Segment Size Used by the System

Log segment size not defined (LOG_SEGMENT_SIZE = 0)

1/3 of the total log area

Log segment size in pages less than/equal to 50% of the total log area

The value defined for LOG_SEGMENT_SIZE

Log segment size > 50% of the total log area

50% of the log area

See also:

Concepts of the Database System

·        General Database Parameters

·        Log Backup

 

 

 

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