SAP ABAP Data Element PAGES_IO_1 (Average number of kbytes to physical-log per write)

Hierarchy

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

Basic Data

Data Element	PAGES_IO_1
Short Description	Average number of kbytes to physical-log per write

Data Type

Category of Dictionary Type	D	Domain
Type of Object Referenced		No Information
Domain / Name of Reference Type	SINT4_NOS
Data Type	INT4	4-byte integer, integer number with sign
Length	10
Decimal Places	0
Output Length	10
Value Table

Further Characteristics

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Field Label

	Length	Field Label
Short	0
Medium	0
Long	0
Heading	0

Documentation

Definition

This field gives the average number of kilobytes that were flushed from the physical log buffer to the physical log on disk. Its value is an indicator as to how well the physical log memory buffers are tuned. In general, if this value is over 75 percent of the size of the physical log buffer (or 100 percent using buffered logging), you can probably improve performance by making the physical log buffer size larger.

NOTE: Any adjustments to this parameter can effect the data buffered write percentages. This is due to modified data being held in the cache for shorter or longer periods of time, restricting or permitting multiple updates to the same data before it is written to disk.

History

Last changed by/on	SAP	20010130
SAP Release Created in