SyncBPHitRatio (DB2UDB_BUFFERPOOL)


Indicates the percentage of the synchronous buffer pool accesses that resulted in requests for data, which did not require a disk access.

The BUFFERPOOL DB2 Monitor Switch must be set ON to make this parameter active and collect data.

This parameter uses the delta calculations.

Parameter value calculation

1 - ((current buffer pool sync reads - previous buffer pool sync reads) / (current buffer pool logical reads - previous buffer pool logical reads)))*100

Note: During first collection cycle, the SyncBPHitRatio parameter would not populate a value since there is no value for the previous buffer pool physical and logical reads. From next collection cycle, parameter will compute and populate the value. Also, the SyncBPHitRatio parameter will go into an offline state during first collection cycle, however, parameter will return to online state from the next collection cycle.

Default parameter attributes

Attribute

Default value

Application class

DB2UDB_BUFFERPOOL

Command type

not applicable

Platform

All

Active at installation

yes

Parameter type

Consumer

Scheduling (poll time)

not applicable

Icon style

Graph

Alarm 1 range

not applicable

Alarm 2 range

not applicable

Border range

not applicable

Unit

Percentage

Annotated?

No

Value set by

CollBufferpool

 

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BMC PATROL for DB2 Universal Database 9.0