SAP ABAP Data Element DB2CPGPSEQ (Number of Pages Read per Sequential Prefetch Read)
Hierarchy
☛
SAP_BASIS (Software Component) SAP Basis Component
⤷
BC-DB-DB2 (Application Component) DB2 for z/OS
⤷
STU3 (Package) Development Class for Database Monitor
SAP_BASIS (Software Component) SAP Basis Component⤷
BC-DB-DB2 (Application Component) DB2 for z/OS⤷
STU3 (Package) Development Class for Database Monitor
Basic Data
| Data Element | DB2CPGPSEQ |
| Short Description | Number of Pages Read per Sequential Prefetch Read |
Data Type
| Category of Dictionary Type | D | Domain |
| Type of Object Referenced | No Information | |
| Domain / Name of Reference Type | DB2CHAR10 | |
| Data Type | CHAR | Character String |
| Length | 10 | |
| Decimal Places | 0 | |
| Output Length | 10 | |
| Value Table |
Further Characteristics
| Search Help: Name | ||
| Search Help: Parameters | ||
| Parameter ID | ||
| Default Component name | ||
| Change document | ||
| No Input History | ||
| Basic direction is set to LTR | ||
| No BIDI Filtering |
Field Label
| Length | Field Label | |
| Short | 0 | |
| Medium | 18 | Pages/seq.prefetch |
| Long | 39 | Pages read per sequential prefetch read |
| Heading | 0 |
Documentation
Definition
The number is calculated as
QBSTSPP / QBSTPIO
where
QBSTSPP:
Number of pages read because of normal sequential prefetch.
A sequential prefetch request does not result in read I/O if the requested pages are found in the buffer pool.
QBSTPIO:
Number of asynchronous read I/Os caused by the normal sequentail prefetch (both applications and utilities).
This number represents the number of I/O operations, not the number of pages read.
History
| Last changed by/on | SAP | 20070813 |
| SAP Release Created in | 710 |
