RE: Creating sequences on the DUAL table?

Mladen,

Thanks for everyone's response on this.

I think that this is just a misperception on the part of the developer. I took the phrase verbatim from his change request. I suspect that he has only ever used sequences in the SELECT from DUAL statement so he thinks that they are actual objects associated with dual. I'll clear it up once I get him on the phone. Just wanted to make sure that this wasn't some weird new thing that I'd just never heard off.

Cherie

                                                                                                                
                    "Gogala,                                                                                    
                    Mladen"              To:     Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>    
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                    com>                 Subject:     RE: Creating sequences on the DUAL table?                 
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                    07/30/02 02:15                                                                              
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What are "sequence on the table"? All I know about sequences is that they are entities for fas generation of unique numbers without encountering locks. They are standalone entries without much connection to any other object.

> -----Original Message-----
> From: Cherie_Machler_at_gelco.com [mailto:Cherie_Machler_at_gelco.com]
> Sent: Tuesday, July 30, 2002 1:54 PM
> To: Multiple recipients of list ORACLE-L
> Subject: Creating sequences on the DUAL table?
>
>
>
> 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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> INET: Cherie_Machler_at_gelco.com
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Author: 
  INET: Cherie_Machler_at_gelco.com

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