Does RollbackToSP will work if table column was dropped?

Question

Hello Everyone,
I would really appreciate any opinion on these two scenarios in OWM.
Scenario One
Steps:
Savepoint1 created on May 20
CALL DBMS_WM.CreateSavepoint('LIVE', 'RRR_Test');
May 21 we alter a versioned table:
EXEC DBMS_WM.BEGINDDL('users');
--removing unused column
alter table users_LTS drop column domain;
EXEC DBMS_WM.COMMITDDL('users');
3. Rolling back to savepoint created on May 20
CALL DBMS_WM.RollbackToSP('LIVE', 'RRR_Test);
End of Scenario
Question: Will the OWM properly rollback changes made to USERS table schema?
Second Case Scenario
1 Savepoint1 created on May 20
CALL DBMS_WM.CreateSavepoint('LIVE', 'RRR_Test');
May 21 we alter a versioned table:
EXEC DBMS_WM.BEGINDDL('users');
--removing unused column
alter table users_LTS drop column domain;
EXEC DBMS_WM.COMMITDDL('users');
3. Rolling back to savepoint created on May 20
1) Add column domain back to the schema
2) Rollback
CALL DBMS_WM.RollbackToSP('LIVE', 'RRR_Test);
End of Scenario
Question: Since the schema is exactly the same as it was originally, will this work?
Your insights are most welcome.
Thank you
Serge
Edited by: sbornow on 27-May-2009 11:29 AM

Answer 1

Hello Ben,
Thanks for your response.
What do you suppose happens if you restore the changes you made (DDL) to the original state at which the savepoint was taken.
I've described it here:
Second Case Scenario
1 Savepoint1 created on May 20
CALL DBMS_WM.CreateSavepoint('LIVE', 'RRR_Test');
May 21 we alter a versioned table:
EXEC DBMS_WM.BEGINDDL('users');
--removing unused column
alter table users_LTS drop column domain;
EXEC DBMS_WM.COMMITDDL('users');
3. Rolling back to savepoint created on May 20
1) Add column domain back to the schema
2) Rollback
CALL DBMS_WM.RollbackToSP('LIVE', 'RRR_Test);
End of Scenario
Will the rollback of a savepoint work then? Considering it is acceptable for column domain to be null and would lose its values when restored.
Also, is there some information about how savepoints work in OWM ? Unfortunately the documentation does not go into detail about how they are saved and work when structural changes occur , whether they become invalid or what happens to it.
Thank you very much
Serge