Deleting large amount of data.

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От Vilson farias
Тема Deleting large amount of data.
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Msg-id 00ee01c24d36$7246a3c0$98a0a8c0@dgtac
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Ответы Re: Deleting large amount of data.
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Greetings,
 
    I'm having some perfomance problems related with large amount of tuples in a table, so I decided to start programming some shell scripts to be placed in crontad to remove old data every night.
 
   Now, my questions are :
 
  If I just execute a DELETE * FROM WHERE call_start < '2002-08-21' and call_start > '2002-08-20', and that interval has 100.000 tuples, does DELETE start and commit a transaction for every single deletion?
 
  And If I put a BEGIN at the beginning and a COMMIT at the end, do deleted tuples overload transaction logs?
 
  Finally, what's the best thing to do?
 
Best regards.
 
--------------------------------------------------------------------------------
José Vilson de Mello de Farias
Software Engineer
 
Dígitro Tecnologia Ltda - www.digitro.com.br - Brazil
APC - Customer Oriented Applications
E-mail: vilson.farias@digitro.com.br
Tel.: +55 48 281 7158
ICQ 11866179
--------------------------------------------------------------------------------
José Vilson de Mello de Farias
Analista de Sistemas
 
Dígitro  Tecnologia  Ltda   -   www.digitro.com.br
APC - Aplicativos Orientados ao Cliente
E-mail: vilson.farias@digitro.com.br
Tel.: +55 48 281 7158
ICQ 11866179

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