Currently we are interfacing our application with SAP. We are having a lot of performance problems with bapi/rfc approach. So recently we are trying "direct sql" approach to retrieve some data from SAP. Unfortunately, we've found that some of SAP table does not equipped with proper indices for our scenario.
We've tried creating index with SAPGUI, but found that the real "database index" was not actually created. Index created with direct DDL will later cause trouble with SAP transport mechanism.
What is the proper way to create an index in SAP database ?
(We are using SAP R3 on Oracle Database)