Barry;
  We never did put together bi-directional replication, but in our single
directional case we ended up making any DDL changes on BOTH systems. 

Process:
  1. Stop Replication on selected object
  2. Make changes on Primary
  3. Make changes on Secondary
  4. Make changes to replication objects
  5. Restart Replication.



-----Original Message-----
Sent: Tuesday, August 28, 2001 7:35 PM
To: Multiple recipients of list ORACLE-L


We have just set up advanced replication in our lab (bi-directional)
And it seems to be working .
I am confused by how replication should handle ddl changes
Does replication have to be turned off before executing ddl changes 
(such as add column , drop column rename table etc)

I guess I don't understand why ddl changes won't break replication.


thanks
Barry

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