SAP ABAP Data Element FGWRITES64 (Number of foreground writes)

Hierarchy

☛ SAP_BASIS (Software Component) SAP Basis Component
   ⤷ BC-DB-INF (Application Component) Informix
     ⤷ STUI (Package) Informix Database Monitor

Basic Data

Data Element	FGWRITES64
Short Description	Number of foreground writes

Data Type

Category of Dictionary Type	D	Domain
Type of Object Referenced		No Information
Domain / Name of Reference Type	STUI_INT64
Data Type	DEC	Counter or amount field with comma and sign
Length	18
Decimal Places	0
Output Length	24
Value Table

Further Characteristics

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Parameter ID
Default Component name
Change document	☐
No Input History	☐
Basic direction is set to LTR	☐
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Field Label

	Length	Field Label
Short	10	FGWRITES
Medium	15	Foregnd Writes
Long	0
Heading	0

Documentation

Definition

A foreground write is activated when a user thread cannot locate an empty or unmodified buffer in the shared memory pool, therefore pages must be flushed in order to make space. Foreground writes should be avoided. If foreground writes are occuring, tune the value of the page cleaning parameter by either increasing the number of page cleaners or decreasing the value of LRU_MAX_DIRTY. The number of foreground writes increases also when sort space is allocated on the file system. This is nothing to worry about in decision support systems like BW.

History

Last changed by/on	SAP	20041216
SAP Release Created in	700