How to optimize an update SQL that runs on a Oracle table with 700M rows

Question

UPDATE [TABLE] SET [FIELD]=0 WHERE [FIELD] IS NULL

[TABLE] is an Oracle database table with more than 700 million rows. I cancelled the SQL execution a

Answer 1

Some suggestions:

1. Drop any indexes that contain FIELD before running your UPDATE statement, and then re-add them later.

2. Write a PL/SQL procedure to do this that commits after every 1000 or 10000 rows.

Hope this helps.