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

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Author: Maryann Atkinson
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