Prerequisites
You can only switch on the Performance Trace for a single instance. You should already have decided the scope of your performance analysis.
Procedure
You will normally analyze the performance trace file immediately. In this case, it is a good idea to use a separate session to start, stop, and analyze the Performance Trace.
During a Performance Trace interval (the time between switching the Performance Trace on and off), you can change the trace types at any time. The user (or user group) must remain unchanged during this period.
Result
The results of the trace recording are contained in a trace file. If trace records are overwritten during the trace interval, the system displays a message to inform you when you analyze the trace file.
The Performance Trace records all database access, remote calls, or lock activity. The measurement itself can affect the performance of the application server on which the trace is running. You should therefore