2007 Jul 16 6:21 PM
hi to all,
can any one provide me examples of cluster and pool tables in sd and mm modules.
thanx and regards,
lokanadhan.k
2007 Jul 16 11:40 PM
Transaction SE11. Pull down on "Database table". Expand selection (Shift+F7).
Select/Unselect cluster or pool table on additional selections. Press Enter.
Anyway: examples include VTIUL (pooled table), MHND (cluster)
2007 Jul 17 3:57 AM
Pool table
A database table defined in the ABAP Dictionary whose database instance is assigned to more than one table defined in the ABAP Dictionary. Multiple pool tables are assigned to a table pool in the database. The key fields of a pool table have to be character-type fields. The table pool's primary key consists of two fields: TABNAME for the name of a pool table, and VARKEY for the interdependent contents of the key fields in the corresponding pool table. The non-key fields of the pool table are stored in compressed format in their own column, called VARDATA, of the table pool. The only way to access pool tables is by using Open SQL. Joins are not allowed.
Table Pool
Database table in the database that contains the data of several pool tables.
Cluster Table
Database table defined in the ABAP Dictionary, whose version on the database is not only assigned to one table defined in the ABAP Dictionary. Several cluster tables are assigned to a table cluster in the database. The intersection of the key fields of the cluster tables forms the primary key of the table cluster. The other columns of the cluster tables are stored in compressed form in a single column VARDATA of the table cluster. You can access cluster tables only via Open SQL, and only without using joins.
Table Cluster
Database table in the database that contains the data of several cluster tables.
Note: Never mix up with a database table that has the necessary structure for storing data clusters in database tables and in the shared memory. Those are called INDX-type, with reference to the database table INDX supplied by SAP. Data clusters are groupings of data objects for transient and persistent storage in a selectable storage medium. A data cluster can be processed using the statements IMPORT, EXPORT, and DELETE FROM.
1) T040, T040A--pooled
2) BSEG, BSES---->cluster
Pooled tables can be used to store control data (e.g. screen sequences, program parameters or temporary data). Several pooled tables can be combined to form a table pool. The table pool corresponds to a physical table on the database in which all the records of the allocated pooled tables are stored.
A001
A004
A005
A006
A007
A009
A010
A012
A015
A016
A017
A018
A019
A021
A022
Cluster tables contain continuous text, for example, documentation. Several cluster tables can be combined to form a table cluster. Several logical lines of different tables are combined to form a physical record in this table type. This permits object-by-object storage or object-by-object access. In order to combine tables in clusters, at least parts of the keys must agree. Several cluster tables are stored in one corresponding table on the database.
AUAA
AUAB
AUAO
AUAS
AUAT
AUAV
AUAW
AUAY
BSEC
BSED
BSEG
BSES
BSET
CDPOS
you can refer to the link http://help.sap.com/saphelp_nw04/helpdata/en/cf/21f083446011d189700000e8322d00/content.htm for standard documentation.
reward points if it is helpful.
2007 Jul 17 4:41 AM
hi,
goto DD02L table.In that in the table category give whatever the category u want i.e.either pooled or cluster.Then u can get the list of pooled and list of cluster tables.
2007 Jul 17 5:52 AM
Hi,
u can able to find all kind of tables in dd02l
Regards,
praveen