SAP Dual Stack Strategy

SAP system that contains installations of both Application Server ABAP ( and Application Server Java (AS Java).
A dual-stack system has the following characteristics:

• Common SID for all application servers and the database

• Common startup framework

• Common database (with different schemas for ABAP and Java) 

Lets Say Dual stack is required for

• PI/XI
• Solution Manager
• Mobile up to NW 7.0

Optional Use case

• BI 7
• ESS scenarios in dual stack
• Java Usage Types in NetWeaver Systems (e.g. Enterprise Portal)

SAP strategy

• Running SAP NetWeaver application components in single stack
• Exception: Solution Manager will stay dual stack

SAP Application Server Setup recommendations

• Setup SAP systems as single stack whenever possible