SAP ABAP Data Element DB2BACSEQ (Number of sequential prefetch requests)
Hierarchy
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SAP_BASIS (Software Component) SAP Basis Component
⤷
BC-DB-DB2 (Application Component) DB2 for z/OS
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STU2 (Package) CCMS for DB2 for OS/390
SAP_BASIS (Software Component) SAP Basis Component⤷
BC-DB-DB2 (Application Component) DB2 for z/OS⤷
STU2 (Package) CCMS for DB2 for OS/390
Basic Data
| Data Element | DB2BACSEQ |
| Short Description | Number of sequential prefetch requests |
Data Type
| Category of Dictionary Type | D | Domain |
| Type of Object Referenced | No Information | |
| Domain / Name of Reference Type | DB2INT4U | |
| Data Type | INT4 | 4-byte integer, integer number with sign |
| 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 | 10 | seq pref |
| Medium | 15 | Seq. Prefetch |
| Long | 20 | Sequential Prefetchs |
| Heading | 0 |
Documentation
Definition
This counter is incremented for each prefetch request. Each request might result in an I/O read. If it results in an I/O read, up to 32 pages can be read for SQL, and upto 64 pages for utilities. A request does not result in an I/O if all pages to be prefetched are already in the buffer pool. Dynamic and list prefetch requests are not included in this counter.
History
| Last changed by/on | SAP | 20070813 |
| SAP Release Created in |
