How u will set the external parameters like packet size and number

Question

How u will set the external parameters like packet size and number of parallel process.

Answer 1

Dear Karthik,
<b>ALE:</b>    
Use Transaction UPSC02         -      ALE Distribution Unit: Packet Types.
Performance Optimization for <b>ODS</b> Objects:
To ensure a good ODS object loading performance, take the following into account:
       1.      Creating SIDs
The creation of SIDs takes a long time and can be avoided in the following cases by:
       Not setting the indicator for BEx Reporting if you are using the ODS object only as a data store. If you do set this indicator, SIDs are created for all new characteristic values.
       If you use line items (for example, document number or time stamp) as characteristics in the ODS object, in the characteristic maintenance, indicate these as Attribute Only.
SIDs are created in parallel if <b>parallel activation</b> is switched on (see last point). They are then created with the same number of parallel processes as created for the activation.
However, if you specify a server group or a special server in customizing, these specifications are not only valid for the activation, but also for the SID creation. The creation of SIDs runs on the application server on which the batch job also runs.
       2.      DB partitioning in active data tables (technical A table)
By partitioning by database level, you can delete data from the ODS object much more quickly. As a partitioning criterion, choose the characteristic by which you want to delete.  For more information on partitioning database tables, see the database documentation (DBMS-CD). Partitioning is supported by the following databases: Oracle, DB2/390, Informix.
       3.      Indexing
Use selection criteria for queries for ODS objects. If the key fields are specified, the existing primary index is used. The more frequently accessed characteristic should appear on the left-hand side.
If you did not specify the key fields completely in the selection criteria (visible in the SQL trace), you improve the run time of the query by creating additional indexes. You can create these secondary indexes in the ODS object maintenance.
       4.      Activation of data in an ODS object
To improve system performance when activating data in the ODS object, you can make the following entries in Customizing under SAP Customizing Implementation Guide -> SAP NetWeaver -> Business Information Warehouse -> General BW Settings ->  ODS Object Settings:
       the maximum number of parallel processes when activating data in the ODS object as when moving SIDs
       the minimum number of data records for each data package when activating data in the ODS object, meaning you define the size of the data packages that are activated
       the maximum wait time in seconds when activating data in the ODS object. This is the time when the main process (batch process) waits for the dialog process that is split before it classifies it as having failed.
       the server group that needs to be used when activating the data in ODS objects in parallel You have to create the server groups beforehand using the following path: Tools -> Administration -> Network -> RFC Destination, RFC -> RFC Groups. If you do not specify anything here, then the activation runs on the server on which the batch process was started for activation. If a server from the server group is not active, then the activation is cancelled.
       5.      Loading unique data records
If you only load unique data records (meaning data records with nonrecurring key combinations) into the ODS object, then the loading performance is improved when you set the indicator Unique Data Records in the ODS object maintenance.
The records are then updated more quickly because the system no longer needs to check whether the record already exists. You do have to be sure that there duplicate records are definitely not being loaded, because this will lead to termination.
Regards,
Naveen.