Starting and Stopping SAP NetWeaver ABAP on IBM i 
To start and stop SAP NetWeaver ABAP on IBM i, proceed as follows:
Starting
Log on to the host of your central system as <SID>ADM.
To start SAP NetWeaver ABAP, enter the command STARTSAP INSTANCE(*ALL).
The ABAP instances and all other processes for your system are started on this host.
In the case of an add-in installation (ABAP + Java), the Java instances are automatically started together with the corresponding ABAP instances.
Stopping
Log on to the host of your central system as <SID>ADM.
To stop SAP NetWeaver ABAP, enter the command STOPSAP INSTANCE(*ALL).
In the case of an add-in installation (ABAP + Java), the Java instances are automatically stopped together with the corresponding ABAP instances.
Note
To start or stop SAP instances, you can also log on as QSECOFR or another user with sufficient authority to operate on the SAP system. To set up the library list and environment variables, enter CALL PGM(R3<SID>400/R3INLPGM) before using the commands STARTSAP or STOPSAP.