Tim, I know the trace file name. I want to have a different name. For example I have a long procedure running for hours. I do a oradebug setospid 400 oradebug unlimit oradebug event 10046 trace name context forever , level 12 then after 5minutes : oradebug event 10046 trace name context off to get the trace file. This makes the file quite bulky. Then I do some changes like create index, analyze etc and after sometime I do this trace again and so on. I want to do the second part to separate file. I might need to do this couple of time and cannot have a 1GB trace file. I also cannot remove the file or empty the trace file. Because after that nothing goes into the file. Thanks --- On Sun, 4/19/09, Tim Gorman <tim@xxxxxxxxx> wrote: From: Tim Gorman <tim@xxxxxxxxx> Subject: Re: ** trace file To: ajoshi977@xxxxxxxxx Cc: oracle-l@xxxxxxxxxxxxx Date: Sunday, April 19, 2009, 1:37 PM If you're going to use ORADEBUG, then how about taking another approach and simply obtaining the regular trace file name using ORADEBUG TRACEFILE_NAME instead? Hope this helps! Tim Gorman consultant - Evergreen Database Technologies, Inc. P.O. Box 630791, Highlands Ranch CO 80163-0791 website = http://www.EvDBT.com/ email = Tim@xxxxxxxxx mobile = +1-303-885-4526 fax = +1-303-484-3608 Yahoo IM = tim_evdbt A Joshi wrote: Hi, Is there a way to give a specific name to a trace file. Thanks for help. tracefile_identifier can be used as below : alter session set tracefile_identifier='XY' However, this does not seem to work for oradebug setospid 400 oradebug unlimit oradebug event 10046 trace name context forever , level 12 This is needed since same process could be running long and a new trace file is needed and old one needs to be deleted. I tried enabling trace for some time and then doing : oradebug event 10046 trace name context off then enabling it again : this seems to add to the trace file but not much luck with getting the info using tkprof. Can someone help. Thanks. I tried emptying trace file by moving another file to it and then doing vi and deleting contents. However, after that it does not write to the file. Thanks