Memory requirements for Information Server Pack for SAP Applications

Answer

The memory requirements vary for the 3 components of the Pack (ABAP, BAPI and IDoc):

The ABAP stage does not have specific memory requirements since the data is consumed by Datastage directly as it is received by the stage. If you are using Pack version 7.0, make sure you have installed the latest Client tier patch, which includes fix JR50101 (already included in version 7.1 GA).

The BAPI stage needs to read all data into memory at once, both when loading and when extracting. This is due to specific SAP API requirements. Make sure the available memory exceeds the BAPI data size. Note that table parameters may include multiple rows per record.
If you are using Pack version 7.0, install the latest Engine tier patch, which includes fix JR43161 (already included in version 7.1 GA).

The IDoc stages need to read all data into memory at once. Make sure the available memory exceeds the total IDoc data size. If multiple IDocs are involved in the transaction, all of them need to be accommodated in memory:

• The Load stage needs to assemble the IDoc segments in memory before sending them to SAP.
• The Extract stage needs to accommodate the IDocs already extracted by the IDoc Listener component. Here, the memory requirements are typically smaller than for IDoc Load, since the stage is usually triggered regularly by the listener, so that the IDocs do not accumulate.