Initial Screen
You can call the initial screen of the test tool using transaction code ST05 or by choosing Test → Performance Trace in the ABAP Workbench.

The following functions are available on the initial screen:
Select trace:
· Select the trace mode SQL Trace, Enqueue Trace, RFC Trace, or Table Buffer Trace. You can select mutliple trace modes simultaneously.
Select trace function:
· Start the trace recording.
· Stop the trace recording.
· Branch to trace list, detailed list, or time-sorted list.
· Branch to Explain SQL to analyze an SQL statement without an explicit trace file.
Trace
files are managed by the system. Thus they can be saved, like any other
object; saved trace files can be displayed and deleted.
A trace can only be activated once on any application server. The Trace Status display informs you whether another user in the system has already activated a particular trace.