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I must have missed a few threads. How do I generate UUID? Thanks Bruce -----Original Message----- From: John Taylor <john.taylor@telusplanet.net> To: RPG400-L@midrange.com <RPG400-L@midrange.com> Date: Wednesday, November 22, 2000 11:25 AM Subject: Re: Timestamps >Chris, > >You'd never get duplicates in your test case because each machine has a >different NIC, which would guarentee a unique NODE segment within the UUID. > >Regards, > >John Taylor >Canada > >----- Original Message ----- >From: "Chris Bipes" <chris.bipes@cross-check.com> >To: <RPG400-L@midrange.com> >Sent: Wednesday, November 22, 2000 09:44 >Subject: RE: Timestamps > > >> We have 3 AS400s, (720/170/400), and I ran a test, Create 1,000,000 >records >> with two fields, UUID, (Universal Unique ID - 16A), and Time Stamp. When >> combining the three files, I had duplicate time stamps but not duplicate >> UUIDs. Can an 24 way 850, with a zillion disk arms, write more than one >> record a nano second? Perhaps the next generation will. >> >> Christopher K. Bipes mailto:ChrisB@Cross-Check.com >> Sr. Programmer/Analyst mailto:Chris_Bipes@Yahoo.com >> CrossCheck, Inc. http://www.cross-check.com >> 6119 State Farm Drive Phone: 707 586-0551 x 1102 >> Rohnert Park CA 94928 Fax: 707 586-1884 >> >> If consistency is the hobgoblin of little minds, only geniuses work here. >> Karen Herbelin - Readers Digest 3/2000 >> >> -----Original Message----- >> From: Eric N. Wilson [mailto:doulos1@home.com] >> Sent: Wednesday, November 22, 2000 7:33 AM >> To: RPG400-L >> Subject: Re: Timestamps >> >> >> Hello, >> >> Using the API is a bit of overkill in most situations. Doing the Time >> opcode into a timestamp field gives you everything but the last 3 >> digits of the timestamp... Which I believe to be the same result as >> the API. >> >> Using a logical file with the time stamp omitted is the only way I >> know of to actually get the last three digits of the timestamp... >> >> Even if a person were able to get the last three digits of a timestamp >> there will come a day when more than one record will be able to be >> added in that interval (Trust me it will especially if you rely on a >> timestamp to be your unique key). There has been discussion on the >> validity of using timestamps and methods of retrieving them recently >> and should be accessible via the search facilities. >> >> A approach that may be more viable is to use a UUID as has also been >> discussed recently. The value is not pretty to the eyes, but unique >> keys should not have any embedded meaning (other than to uniquely >> identify a record) in my opinion. >> >> Wednesday, November 22, 2000, 12:43:38 AM, you wrote: >> +--- >> | This is the RPG/400 Mailing List! >> | To submit a new message, send your mail to RPG400-L@midrange.com. >> | To subscribe to this list send email to RPG400-L-SUB@midrange.com. >> | To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com. >> | Questions should be directed to the list owner/operator: >david@midrange.com >> +--- >> > >+--- >| This is the RPG/400 Mailing List! >| To submit a new message, send your mail to RPG400-L@midrange.com. >| To subscribe to this list send email to RPG400-L-SUB@midrange.com. >| To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com. >| Questions should be directed to the list owner/operator: david@midrange.com >+--- +--- | This is the RPG/400 Mailing List! | To submit a new message, send your mail to RPG400-L@midrange.com. | To subscribe to this list send email to RPG400-L-SUB@midrange.com. | To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com. | Questions should be directed to the list owner/operator: david@midrange.com +---
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