you mention you use one update statement by record, this may be to basic but anyway, it just happened to me... do you use the WHERE clause in your UPDATE statement, and if so is the column you use to filter indexed? javier On Sat, 5 Feb 2005 03:14:52 -0800 (PST), Venkatesh Babu <venkatbabukr@xxxxxxxxx> wrote: > Hi, > > There aren't any foreign keys and we are currently > using Postgres version 7.4... > > --- Venkatesh Babu <venkatbabukr@xxxxxxxxx> wrote: > > > Hi, > > > > There aren't any triggers but there are 75262 update > > statements. The problem is that we have a datatype > > called as "Collection" and we are fetching the data > > rows into it, modifying the data and call > > Collection.save(). This save method generates one > > update satement per record present in it. > > > > Thanks, > > Venkatesh > > > > --- Tom Lane <tgl@xxxxxxxxxxxxx> wrote: > > > > > Venkatesh Babu <venkatbabukr@xxxxxxxxx> writes: > > > > We have a table cm_quotastates which has exactly > > > > 4624564 rows and 25 columns and 9 indexes... Out > > > of > > > > these, our code retrieves 75262 rows and > > modifies > > > just > > > > one column in each row... but updating these to > > > > database is taking some significant time (around > > > 20 > > > > minutes)... Tried the following with the update > > > > > > Any triggers or foreign keys on that table? Also, > > > what PG version is > > > this? Are you doing this in a single UPDATE > > > command, or 75262 separate > > > commands? > > > > > > regards, tom lane > > > > > > > > > > > > > __________________________________ > > Do you Yahoo!? > > Yahoo! Mail - Find what you need with new enhanced > > search. > > http://info.mail.yahoo.com/mail_250 > > > > ---------------------------(end of > > broadcast)--------------------------- > > TIP 6: Have you searched our list archives? > > > > http://archives.postgresql.org > > > > __________________________________ > Do you Yahoo!? > Yahoo! Mail - You care about security. So do we. > http://promotions.yahoo.com/new_mail > > ---------------------------(end of broadcast)--------------------------- > TIP 4: Don't 'kill -9' the postmaster > ---------------------------(end of broadcast)--------------------------- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to majordomo@xxxxxxxxxxxxxx so that your message can get through to the mailing list cleanly
