Commit and rollback on session level

Question

Hi All,
I am calling one stored procedure and I am doing some dml operation in that sp. there after I calling another sp which contain some ddl operations. if process may be fail in somewhere I wanted to rollback all dml transactions.
So I wanted to commit and rollback on session level. Is such kind of concept available in oracle.
Prashant.

Answer 1

Prashant,
Not sure what you are talking about.
Commit and rollback is always on session level!!!!
Also all DDL statements are automatically committed, and rollback in case of errors is always statement level rollback.
So let's assume
begin
insert into foo...;
update foo...;
execute immediate 'alter table foo add (last_update date)';
end;
exit
and the alter table fails:
1 alter table is rolled back
2 insert and updates are not rolled back.
If the alter table succeeds
all statements are committed and you can't roll them back anymore.
This is why issuing DDL in stored procedures has unwanted side effects and should be conisdered pure evil.
Sybrand Bakker
Senior Oracle DBA
Experts: those who did read the documentation.