I am running alter table
alter table mytable add (newaddr varchar2(20) default '
' not null);
mytable is 30 M Rows table.
this cmd is going to update all existing rows with new columns default value.
- is there any system table where i can see status on this alter cmd, like in v$sql i can see rows_processed if i do update/select/insert/delete
- is there any better way of doing it
- if i populate new column with NULL , which one is costly ? with NULL or with some default value.
i can see only growing rollback segment...
thanks in advance