Add the new column on 25 million lines Table

Hi gurus,

I have to add the new column to a populated application table who get to each Transaction.
We can do this with no interruption of service and what are the things that I need to look after adding the peak of performance.
Something happened to my mind is re - run stats

Any Suggestion

Database version =

I appreciate your help on this
Thank you

789816 wrote:
If the GET of the table is locked, it means that the application cannot write any new transactions in the table until the new default values has been updated?, my understanding of the downtime to do this to

*-Online Yes, you need downtime in 10 g *.

Another Question if we have default values as NULL will always be the table get locked?


11 g, this problem has been fixed by oracle:

create table sales as
   select rownum as id,
   mod(rownum,5) as product_id,
 mod(rownum,100) as client_id,
 2000 as price,
 as c_date
 from dual
 10   connect by level <= 2.5e5;

Table created.

SQL> select count(*) from sales;


----session 1
SQL> begin
  2  for i in 1..100000 loop
  3  insert into sales (id) values(i);
  4  end loop;
  5  commit;
  6  end;
  7  /

PL/SQL procedure successfully completed.


When inserting into the table sales, the alter table add the new column was waiting for the inserts to finish

SQL> alter table sales add (provider_id NUMBER(2));

Table altered.


Tags: Database

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