Moin Ruud yes without problems. but i get the trace-options most from=20 the os-390/tsm support. so i think you must get it from tivoli/ibm Helge -----Urspr=FCngliche Nachricht----- Von: Van Ruler, Ruud R SSI-ISES-32 = [mailto:[EMAIL PROTECTED]] Gesendet: Mittwoch, 24. Januar 2001 13:15 An: [EMAIL PROTECTED] Betreff: trace facility on OS/390 L&g Has anyone ever used the Server Trace Facility ?? If so: * Does it have a lot of impact on performance ? * Where can I find documentation on (aggregate) trace classes and what's more important their meaning/description ? * what classes to specify in case of diagnosing performance = problems due to high cpu consumption and/or time-out errors during = backup/archive thanks. Ruud van Ruler, Shell Services International BV - ISES/32 Our Data Storage Management home page: http://sww2.shell.com/os390/ > Room 0C/G06 > Dokter van Zeelandstraat 1, 2285 BD Leidschendam NL Tel : +31 (0)70 - 3034644, Fax 4011, Mobile +31 (0)6-55127646 Email Internet: [EMAIL PROTECTED] [EMAIL PROTECTED] R.vanRuler