Re: LOCK TABLE & speeding up mass data loads
От | Ron Johnson |
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Тема | Re: LOCK TABLE & speeding up mass data loads |
Дата | |
Msg-id | 1043522349.818.36.camel@haggis обсуждение исходный текст |
Ответ на | Re: LOCK TABLE & speeding up mass data loads (Rod Taylor <rbt@rbt.ca>) |
Ответы |
Re: LOCK TABLE & speeding up mass data loads
|
Список | pgsql-performance |
On Sat, 2003-01-25 at 13:07, Rod Taylor wrote: > On Sat, 2003-01-25 at 13:57, Ron Johnson wrote: > > Hi, > > > > Would LOCK TABLE ACCESS EXCLUSIVE MODE speed things up, when I have > > a script that loads data by setting transactions, and then committing > > works after every few thousand INSERTs? > > If you're the only person working on the database, then no. If you're > fighting for resources with a bunch of other people -- then possibly, > but the others won't get anything done during this timeframe (of > course). Ok. > Oh, and you're using COPY right? No. Too much data manipulation to do 1st. Also, by committing every X thousand rows, then if the process must be aborted, then there's no huge rollback, and the script can then skip to the last comitted row and pick up from there. -- +---------------------------------------------------------------+ | Ron Johnson, Jr. mailto:ron.l.johnson@cox.net | | Jefferson, LA USA http://members.cox.net/ron.l.johnson | | | | "Fear the Penguin!!" | +---------------------------------------------------------------+
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