Stopping TREX 

...

       1.      Log on locally to the host on which the TREX instance is installed with the user <sapsid>adm.

       2.      Execute the script stopsap in any directory:

                            a.      To stop a single TREX instance, enter the following:

stopsap TRX<instance_number>

In the parameter TRX<instance_number>, you specify which TREX instance is to be stopped.

                            b.      To stop all SAP instances – including all TREX instances – on a host, enter the following:

stopsap