SAP ABAP Data Element NUMCKPTS (Number of checkpoints since database startup)
Hierarchy
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SAP_BASIS (Software Component) SAP Basis Component
⤷
BC-DB-INF (Application Component) Informix
⤷
STUI (Package) Informix Database Monitor
SAP_BASIS (Software Component) SAP Basis Component⤷
BC-DB-INF (Application Component) Informix⤷
STUI (Package) Informix Database Monitor
Basic Data
| Data Element | NUMCKPTS |
| Short Description | Number of checkpoints since database startup |
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
| 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 | 0 | |
| Long | 0 | |
| Heading | 0 |
Documentation
Definition
A checkpoint syncronizes the pages in the shared memory buffer pools with the pages on disk.
There are 5 events which initiate a checkpoint.
1) The default checkpoint interval has elapsed
2) The physical log on disk becomes 75% full
3) Online detects that the next logical-log file to become current contains the most recient checkpoint record.
4) The Online administrator initiates a checkpoint from the On-Monitor, Force-Ckpt menu or from the command line using onmode -c.
5) Certian administrative tasks such as adding a chunk, or a dbspace.
History
| Last changed by/on | SAP | 20010130 |
| SAP Release Created in |
