T20_ST02 SAP (ST02: Fields for screens 20, 21, 22, 23) Structure details
Description: ST02: Fields for screens 20, 21, 22, 23
Structure field list including key, data, relationships and ABAP select examples
T20_ST02 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 "ST02: Fields for screens 20, 21, 22, 23" 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_T20_ST02 TYPE T20_ST02.
The T20_ST02 table consists of various fields, each holding specific information or linking keys about ST02: Fields for screens 20, 21, 22, 23 data available in SAP. These include QUALITY (Data base buffer quality), HITS (Buffer hits), REQUESTS (Buffer requests), DB_ACC_SAV (Database Accesses Saved).. 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: Cannot Be Enhanced
SAP T20_ST02 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 |
| BUF_NAME | Buffer name | D_BUF_NAME | CHAR | 21 | ST02_21 | ||||
| QUALITY | Data base buffer quality | D_QUAL | DEC | 5(2) | STAT_QUD2 | ||||
| HITS | Buffer hits | D_HITS | INT4 | 10 | STAT_I4 | ||||
| REQUESTS | Buffer requests | D_REQUESTS | INT4 | 10 | STAT_I4 | ||||
| DB_ACC_SAV | Database Accesses Saved | D_DBACSAVE | INT4 | 10 | STAT_I4 | ||||
| DB_ACCESS | Database Accesses | D_DBAC | INT4 | 10 | STAT_I4 | ||||
| SIZE_ALLOC | Buffer allocated | D_SIZE | INT4 | 10 | STAT_I4 | ||||
| SIZE_AVAIL | Available size in buffer | D_SAVAIL | INT4 | 10 | STAT_I4 | ||||
| SIZE_USED | Size used in buffer | D_SUSED | INT4 | 10 | STAT_I4 | ||||
| SIZE_FREE | Free Buffer | D_SFREE | INT4 | 10 | STAT_I4 | ||||
| SIZE_GAPS | Gap size in buffer | D_SGAPS | INT4 | 10 | STAT_I4 | ||||
| ENTRY_MAX | Maximum entries in directory | D_EMAX | INT4 | 10 | STAT_I4 | ||||
| ENTRY_USED | Used entries in directory | D_EUSED | INT4 | 10 | STAT_I4 | ||||
| ENTRY_FREE | Free entries in directory | D_EFREE | INT4 | 10 | STAT_I4 | ||||
| REFRESHES | Number of buffer refreshes | D_REFRESH | INT2 | 5 | STAT_INT2 | ||||
| FIRST_REFR | Time of buffer initialization | D_FIRSTREF | CHAR | 21 | ST02_21 | ||||
| LAST_REFR | Time of last buffer refresh | D_LASTREFR | CHAR | 21 | ST02_21 | ||||
| ST_QUALITY | Quality of storage management | D_STQUAL | CHAR | 3 | ST02_3 | ||||
| ST_SEARCHM | Storage search mode | D_STSEARCH | CHAR | 13 | ST02_13 | ||||
| ST_MEMORYC | Storage memory class | D_STMEMORY | CHAR | 13 | ST02_13 | ||||
| AC_ACTIVEO | Active objects | D_ACACTIVE | CHAR | 10 | ST02_10 | ||||
| AC_INSERTS | Inserts | D_ACINSERT | CHAR | 10 | ST02_10 | ||||
| AC_DELETES | Deletes | D_ACDELETE | CHAR | 10 | ST02_10 | ||||
| AC_SWAP | Object swaps from buffer | D_ACSWAP | INT4 | 10 | STAT_I4 | ||||
| FRAME_SWAP | Object swaps from buffer | D_ACSWAP | INT4 | 10 | STAT_I4 | ||||
| AC_REORG | Buffer reorgs | D_ACREORG | INT4 | 10 | STAT_I4 | ||||
| OB_MINSIZE | Min.object size | D_OBMINSIZ | CHAR | 10 | ST02_10 | ||||
| OB_MAXSIZE | Max.object size | D_OBMAXSIZ | CHAR | 10 | ST02_10 | ||||
| OB_AVERAGE | Average object size | D_OBAVERAG | CHAR | 10 | ST02_10 | ||||
| OB_VARIANZ | Variance of object size | D_OBVARIAN | CHAR | 10 | ST02_10 | ||||
| OB_STAND | Standard object size | D_OBSTAND | CHAR | 10 | ST02_10 |
| Key field | Non-key field |
How do I retrieve data from SAP structure T20_ST02 using ABAP code?
As T20_ST02 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 T20_ST02 as there is no data to select.How to access SAP table T20_ST02
Within an ECC or HANA version of SAP you can also view further information about T20_ST02 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