In a message dated 11/18/2004 5:25:03 PM Eastern Standard Time, "Bob Woodward" <[EMAIL PROTECTED]> writes:
>If the file has never been closed, just do a quick LIST on the file. If >FILE.USAGE is on then when you end the list, you'll at LEAST get some >read hits on it. > >Bob Woodward If person A has the file open and person B does a list, is the updated information writen when person B ends her list? Or when person A finally closes the file? In other words, is the header information viewable, even though someone somewhere is still holding the file open? Will >> -----Original Message----- >> From: [EMAIL PROTECTED] [mailto:owner-u2- >> [EMAIL PROTECTED] On Behalf Of Glenn Herbert >> Sent: Thursday, November 18, 2004 2:04 PM >> To: [EMAIL PROTECTED] >> Subject: Re: [U2] RE: [UV] Monitoring file changes >> >> Yeah. I said that in a previous email. The question was simply is >there a >> way to determine if statistics are enabled and, without having to >delve >> into the file header, listing out the statistics using FILE.USAGE is >the >> only way to tell. Of course, you are >> correct that IF statistics collection HAS been enabled, yet the file >has >> NEVER been closed, thus no header updates have occurred..... >> >> Ok. Tried this. Statistics collection can definitely be determined >using >> the FILE.USAGE command. If they are enabled, the listing will also >> include >> a line such as: >> >> Statistics last reset <timestamp> >> >> (Statistics last reset Thu Nov 18 17:06:33 2004) >> >> IF this line does NOT appear, statistics collection is definitely OFF. >> >> >> >> At 04:22 PM 11/18/2004, you wrote: >> >I don't think that's correct. I did some tests on this several years >ago. >> >If memory serves, when file usage is ON, counts are held in memory. >They >> >don't actually get written to the file header on disk until the file >is >> closed. >> > >> >Or am I mis-remembering again? >> > >> >-- >> > >> >Regards, >> > >> >Clif >> > >> >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> >W. Clifton Oliver, CCP >> >CLIFTON OLIVER & ASSOCIATES >> >Tel: +1 619 460 5678 Web: www.oliver.com >> >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> > >> > >> >Glenn Herbert wrote: >> > >> >>I believe if you run FILE.USAGE <filename> and all values are zero, >then >> >>statistic collection is OFF. You enable it using FILE.USAGE.CLEAR; >> >>disable it using FILE.USAGE.OFF. >> >>At 02:54 PM 11/18/2004, you wrote: >> >> >> >>>Is there a way to tell if FILE.USAGE has been set to collect >> information? >> >>>-Dianne >> >------- >> >u2-users mailing list >> >[EMAIL PROTECTED] >> >To unsubscribe please visit http://listserver.u2ug.org/ >> ------- >> u2-users mailing list >> [EMAIL PROTECTED] >> To unsubscribe please visit http://listserver.u2ug.org/ >------- >u2-users mailing list >[EMAIL PROTECTED] >To unsubscribe please visit http://listserver.u2ug.org/ ------- u2-users mailing list [EMAIL PROTECTED] To unsubscribe please visit http://listserver.u2ug.org/
