DB2QW0254 SAP (Statistics CF Cache Structure Data) Structure details
Description: Statistics CF Cache Structure Data
Structure field list including key, data, relationships and ABAP select examples
DB2QW0254 is a standard SAP Structure so does not store data like a database table does. It can be used to define the fields of other actual tables or to process "Statistics CF Cache Structure Data" Information within sap ABAP programs.
This is done by declaring abap internal tables, work areas or database tables based on this Structure. These can then be used to store and process the required data appropriately.
i.e. DATA: wa_DB2QW0254 TYPE DB2QW0254.
The DB2QW0254 table consists of various fields, each holding specific information or linking keys about Statistics CF Cache Structure Data data available in SAP. These include QW0254RH (Read hit), QW0254RD (Read-miss directory-hit counter), QW0254RS (Read-miss assignment-suppressed), QW0254RN (Read-miss name-assigned).. See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .
Delivery Class:Display/Maintenance via tcode SM30: Display/Maintenance Allowed but with Restrictions
SAP enhancement categories: Not classified
SAP DB2QW0254 structure fields - Full list of fields found in SAP data dictionary
| Field | Description | Data Element | Data Type | length (Dec) | Check table | Conversion Routine | Domain Name | MemoryID | SHLP |
| QW0254GN | The name of the group buffer pool | DB2W0254GN | NUMC | 10 | DB2NUMC10 | ||||
| QW0254RH | Read hit | DB2W0254RH | NUMC | 10 | DB2NUMC10 | ||||
| QW0254RD | Read-miss directory-hit counter | DB2W0254RD | NUMC | 10 | DB2NUMC10 | ||||
| QW0254RS | Read-miss assignment-suppressed | DB2W0254RS | NUMC | 10 | DB2NUMC10 | ||||
| QW0254RN | Read-miss name-assigned | DB2W0254RN | NUMC | 10 | DB2NUMC10 | ||||
| QW0254RF | Read-miss cache-full | DB2W0254RF | NUMC | 10 | DB2NUMC10 | ||||
| QW0254WH | Changed page write-hit | DB2W0254WH | NUMC | 10 | DB2NUMC10 | ||||
| QW0254WC | Clean page write-hit | DB2W0254WC | NUMC | 10 | DB2NUMC10 | ||||
| QW0254WF | Write-miss cache-full | DB2W0254WF | NUMC | 10 | DB2NUMC10 | ||||
| QW0254DR | Directory entry reclaims | DB2W0254DR | NUMC | 10 | DB2NUMC10 | ||||
| QW0254TR | Data entry reclaims | DB2W0254TR | NUMC | 10 | DB2NUMC10 | ||||
| QW0254XR | Directory entry reclaims with XI | DB2W0254XR | NUMC | 10 | DB2NUMC10 | ||||
| QW0254CC | The number of castout operations performed. | DB2W0254CC | NUMC | 10 | DB2NUMC10 | ||||
| QW0254DE | The number of allocated directory entries (not cumulative). | DB2W0254DE | NUMC | 10 | DB2NUMC10 | ||||
| QW0254TE | # of allocated data entries (snapshot, not cumulative) | DB2W0254TE | NUMC | 10 | DB2NUMC10 | ||||
| QW0254TC | Changed pages | DB2W0254TC | NUMC | 10 | DB2NUMC10 | ||||
| QW0254GC | Group buffer pool name | DB2W0254GC | CHAR | 8 | DB2CHAR08 | ||||
| QW02542W | Secondary group buffer pool: Changed page write-hit | DB2W02542W | NUMC | 10 | DB2NUMC10 | ||||
| QW02542F | Secondary group buffer pool: Write-miss cache-full | DB2W02542F | NUMC | 10 | DB2NUMC10 | ||||
| QW02542D | Secondary group buffer pool: Directory entries allocated | DB2W02542D | NUMC | 10 | DB2NUMC10 | ||||
| QW02542T | Secondary group buffer pool: Data entries allocated | DB2W02542T | NUMC | 10 | DB2NUMC10 | ||||
| QW02542C | Secondary group buffer pool: Changed pages | DB2W02542C | NUMC | 10 | DB2NUMC10 | ||||
| QW0254CI | Explicit cross invalidations | DB2W0254CI | NUMC | 10 | DB2NUMC10 |
| Key field | Non-key field |
How do I retrieve data from SAP structure DB2QW0254 using ABAP code?
As DB2QW0254 is a database structure and not a table it does not store any data in the SAP data dictionary. The ABAP SELECT statement is therefore not appropriate and can not be performed on DB2QW0254 as there is no data to select.How to access SAP table DB2QW0254
Within an ECC or HANA version of SAP you can also view further information about DB2QW0254 and the data within it using relevant transactions such asSE11 (ABAP Dictionary Maintenance)
SM30 (Maintain Table Data)
SE80 (Object Navigator)
SE16 (Data Browser).
Search for further information about these or an SAP related objects