SAP ABAP Data Element LOGBUFF (Size of each of the three logical log buffers)
Hierarchy
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SAP_BASIS (Software Component) SAP Basis Component
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BC-DB-INF (Application Component) Informix
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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 | LOGBUFF |
| Short Description | Size of each of the three logical log buffers |
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
Online uses the logical log buffer to store a record of changes to Online data since the last archive. There are three logical log buffers located in the shared memory area. Tripple buffering permits the logical logs vitrual processor to write to the active buffer while one of the others is being flushed to the current logical log file on disk, and eventually to the logical log backup tapes.
The LOGBUFF parameter in the ONCONFIG* file located in the directory $INFORMIXDIR/etc specifies the size of the logical log buffers.
To determine if tuning is needed, see the help description for the log.log written/IO parameter.
History
| Last changed by/on | SAP | 20010130 |
| SAP Release Created in |
