System Trace: Relevant Profile Parameters

With system profile parameters, you can set the maximum size of the SQL and system trace files and specify its path name. All trace parameter names begin with the string rstr/. You can display the standard values and the parameter documentation in transaction RZ11.

The trace parameters that you can set are as follows:

Profile Parameter	Meaning
`rstr/buffer_size_kB`	The SAP trace (SQL trace) saves the trace data in trace files. To minimize the effect on system performance the data is saved in an internal buffer, and not saved directly. Profile parameter `rstr/buffer_size_kB` determines the size of the buffer in kilobytes.
`rstr/filename`	The SAP trace (for example, SQL trace) stores the data in several files that are written sequentially. Parameter `rstr/filename` defines the base name of these files. There is always one file with this exact name. If the file is full (parameter `rstr/max_filesize_MB`), the file is renamed, and a new file with the base name created. When the file is renamed, a number between 00 and 99 is assigned to the file name. Parameter `rstr/max_files` determines the maximum number of files. If this number is exceeded, the files are overwritten.
`rstr/max_files`
`rstr/max_filesize_MB`

The system maintains additional trace parameters which you should not change.

Note Note

You can obtain further information on the parameters using transaction RZ11.

End of the note.