IFCID 003 - Group Buffer Pools Activity Data

This topic shows detailed information about Record Trace - IFCID 003 - Group Buffer Pools Activity Data.

                                            GROUP BUFFER POOLS ACTIVITY DATA                          
GROUP BUFFER POOL ID            0  READ(NF)-DATA RETURNED          0  CLEAN PAGES WRITTEN             0
READ(XI)-DATA RETURNED          0  READ(NF)-NO DATA RET.           0  CHANGED PAGES WRITTEN           0
READ(XI)-NO DATA RET.           0  READ PREFETCH                   0  UNREGISTER PAGE                 0
EXPLICIT X-INVALID              0                                                                      
GBP-DEPENDENT GETPAGES          2  ASYNCH GBP REQUESTS             0  ASYNCH SEC-GBP REQUESTS         0
PG P-LOCK LOCK REQ SP M         0  PG P-LOCK LOCK REQ DATA         0  PG P-LOCK LOCK REQ IX L         0
PG P-LOCK LOCK SUSP SP          0  PG P-LOCK LOCK SUSP DAT         0  PG P-LOCK LOCK SUSP IX          0
PG P-LOCK UNLOCK REQ            0                                                                      
WRITE & REGISTER MULT           0  WRITE AND REGISTER              0                                   

GROUP BUFFER POOL ID

The group buffer pool identifier.

Field Name: QBGAGN

READ(XI)-DATA RETURNED

The number of coupling facility read requests required because the buffer was marked invalid. Data is returned from the group buffer pool.

Field Name: QBGAXD

READ(XI)-NO DATA RET.

The number of group buffer pool read requests due to buffer XI where no data was returned.

Field Name: QBGAXR

EXPLICIT X-INVALID

The number of times an explicit coupling facility cross-invalidation request was issued.

Field Name: QBGAEX

GBP-DEPENDENT GETPAGES

The number of coupling facility READ requests required because the buffer was marked invalid. Data is returned from the group buffer pool.

Field Name: QBGAGG

PG P-LOCK LOCK REQ SP M

The number of page P-lock lock requests for space map pages.

Field Name: QBGAP1

PG P-LOCK LOCK SUSP SP

The number of page P-lock suspensions for space-map pages.

Field Name: QBGAS1

PG P-LOCK UNLOCK REQ

The number of page P-lock unlock requests.

Field Name: QBGAU1

WRITE & REGISTER MULT

The number of write and register multiple (warm) requests.

Field Name: QBGAWM

READ(NF)-DATA RETURNED

The number of coupling facility read requests necessary because the requested page was not found in the buffer pool. Data is returned from the coupling facility.

Field Name: QBGAMD

READ(NF)-NO DATA RET.

The number of group-buffer-pool reads due to local buffer-pool miss where no data was returned.

Field Name: QBGAMR

READ PREFETCH

The number of pages read from the group buffer pool due to prefetch under the control of the agent.

Field Name: QBGAMN

ASYNCH GBP REQUESTS

The number of asynchronous IXLCACHE invocations for the primary group buffer pool.

Field Name: QBGAHS

PG P-LOCK LOCK REQ DATA

The number of page P-lock lock requests for data pages.

Field Name: QBGAP2

PG P-LOCK LOCK SUSP DAT

The number of page P-lock lock suspensions for data pages.

Field Name: QBGAS2

This is an exception field.

WRITE AND REGISTER

The number of Write and Register (WAR) requests.

Field Name: QBGAWS

CLEAN PAGES WRITTEN

The number of clean pages written to the group buffer pool.

Field Name: QBGAWC

CHANGED PAGES WRITTEN

The number of changed pages written to the group buffer pool as a result of write and register (WAR), or write and register multiple (WARM) requests.

Field Name: QBGASW

This is an exception field.

UNREGISTER PAGE

The number of coupling facility requests to unregister a page.

Field Name: QBGADG

This is an exception field.

ASYNCH SEC-GBP REQUESTS

The number of IXLCACHE invocations for the secondary group buffer pool.

Field Name: QBGA2H

PG P-LOCK LOCK REQ IX L

The number of page P-lock lock requests for index-leaf pages.

Field Name: QBGAP3

PG P-LOCK LOCK SUSP IX

The number of page P-lock lock suspensions for index-leaf pages.

Field Name: QBGAS3