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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Creating sequences on the DUAL table?
Cherie,
My first response is 'WHY?'. Do they mean that they want to create 2 new sequences and use the DUAL table to retrieve the values? It will cause performance problems and there are better solutions. I have some information on the performance implications of DUAL at http://www.optimaldba.com/internals/oraint_dual.html.
Dan Fink
-----Original Message-----
Sent: Tuesday, July 30, 2002 11:54 AM
To: Multiple recipients of list ORACLE-L
I have a request from one of our developers to create two new sequences on the DUAL table.
This seems like a bad idea to me. I've never had such a request in the past. I asked for clarification on why this is needed and I didn't get a lot of details yet.
Is this something that is standard operating procedure? My understanding that interfacing with the DUAL table is usually inviting poor performance. Plus, I don't like to mess around with system tables, in general.
Under what circumstances would it be justified to create sequences on the DUAL table? Should I just flat-out refuse this request and if so, why?
Thanks,
Cherie Machler
Oracle DBA
Gelco Information Network
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Please see the official ORACLE-L FAQ: http://www.orafaq.com
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Author:
INET: Cherie_Machler_at_gelco.com
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Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists --------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Tue Jul 30 2002 - 13:50:52 CDT
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