Platform info: Oracle 10.1.0.2.0 on Windows XP Every time new archived log created Oracle writes messages into NT event log (similar to what it writes into alert log file). Trying to disable this "feature", I found hidden parameter "-disable_ntlog_events" (which is by default set to FALSE). Changed it to TRUE: Alter system set "-disable_ntlog_events"=TRUE scope=SPFILE Restarted oracle, checked if new value was set: select n.ksppinm name, v.ksppstvl value from x$ksppi n, x$ksppsv v where n.indx = v.indx and n.ksppinm = '_disable_ntlog_events'; NAME VALUE ---------------------------------------- ------------------------- _disable_ntlog_events TRUE But "archiving" messages are still written into NT event log. Anyone dealt with this problem Igor Neyman, OCP DBA ineyman@xxxxxxxxxxxxxx -- //www.freelists.org/webpage/oracle-l