Ryan's method is pretty hi-tech for me, and he is flying above the clouds and does not want to get down to poor little me, even after the inviation... :-)
But this one here, --- Mark Richard <[EMAIL PROTECTED]> wrote: > Yeah, it sounds pretty high-tech. > Create a loop and place the following within it: > update table > set flag = new_value > where condition and flag <> new_value and rownum <= commit_limit; > n_rows_updated := SQL%ROWCOUNT; > commit; > > The exit condition is when n_rows_updated = 0, ie: nothing left to > update. But this one here, I dont know, how are you getting to the next set? What if one set does not have anything to update at all? Then rows_updated will be 0, and we'll exit. > > This approach will cause a few more scans than the ideal option, but > it > might get the job done. Increasing the commit_limit value as high as > possible will reduce the number of iterations. 1,000 rows sounds > very > small - even if your row length was 1,000 bytes you are only talking > about > 1MB of data. Have you tried all 100,000 rows at once? How about > 10,000 at > a time? > > > > > > > MaryAnn Atkinson > > <[EMAIL PROTECTED] To: Multiple > recipients of list ORACLE-L <[EMAIL PROTECTED]> > .com> cc: > > Sent by: Subject: Re: update > about 100K records > [EMAIL PROTECTED] > > .com > > > > > > 09/07/2003 09:29 > > Please respond to > > ORACLE-L > > > > > > > > > > huh??? > > --- Ryan <[EMAIL PROTECTED]> wrote: > > bulk collect the flag into a pl/sql table. forall with a limit > clause > > and then commit after hitting each limit. > > this is on asktom. > > anything more down the earth for me please? > > thx > maa > > > > > ----- Original Message ----- > > To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> > > Sent: Tuesday, July 08, 2003 7:09 PM > > > > > > > I have a table of about one million records. > > > > > > About 100,000 of them have a flag which I need it set to 0. > > > > > > Because of the size of the rollback segment, I cannot > > > update them all and then commit, I need to do it in > > > sets of 1000 records. > > > > > > Do I need a cursor for this? > > > > > > I had something like that: > > > DECLARE > > > I BINARY_INTEGER; > > > > > > > > > Cursor MyCursor IS > > > SELECT * > > > FROM (Table_Name) > > > WHERE (Condition) > > > FOR UPDATE; > > > > > > BEGIN > > > I := 0; > > > FOR MyRec IN MyCursor LOOP > > > UPDATE (Table_name) > > > SET delete_flag = 1 > > > WHERE CURRENT OF MyCursor; > > > > > > I := I + 1; > > > IF MOD(I, 1000) = 0 THEN > > > COMMIT; > > > END IF; > > > > > > END LOOP; > > > END; > > > / > > > > > > But "FOR UPDATE" does not really work well, and at the 1000th > > record > > > when it reaches the commit, its dropping out of the loop. > > > > > > Can I use ROWNUM to update them in batches of 1000 per time? > > > > > > Thanks, > > > maa > > > > > > -- > > > Please see the official ORACLE-L FAQ: http://www.orafaq.net > > > -- > > > Author: Maryann Atkinson > > > INET: [EMAIL PROTECTED] > > > > > > Fat City Network Services -- 858-538-5051 > http://www.fatcity.com > > > San Diego, California -- Mailing list and web hosting > > services > > > > > > --------------------------------------------------------------------- > > > To REMOVE yourself from this mailing list, send an E-Mail message > > > to: [EMAIL PROTECTED] (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). > > > > > > > -- > > Please see the official ORACLE-L FAQ: http://www.orafaq.net > > -- > > Author: Ryan > > INET: [EMAIL PROTECTED] > > > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > > San Diego, California -- Mailing list and web hosting > services > > > --------------------------------------------------------------------- > > To REMOVE yourself from this mailing list, send an E-Mail message > > to: [EMAIL PROTECTED] (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). > > > __________________________________ > Do you Yahoo!? > SBC Yahoo! DSL - Now only $29.95 per month! > http://sbc.yahoo.com > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.net > -- > Author: MaryAnn Atkinson > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (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). 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You may > also send the HELP command for other information (like subscribing). __________________________________ Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month! http://sbc.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: MaryAnn Atkinson INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (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).
