Save changes (transactional).
COMMIT [WORK] [COMMENT 'comment_text'] COMMIT [WORK] [FORCE 'force_text' [,int] ]
FORCE - will manually commit an in-doubt distributed
force_text - transaction identifier (see the DBA_2PC_PENDING view)
int - sets a specific SCN
If a network or machine failure prevents a distributed transaction from committing properly, Oracle will store any commit comment in the data dictionary along with the transaction ID.
"Success is a lousy teacher. It seduces smart people into thinking they can't lose." - Bill Gates
SAVEPOINT - Save changes to a point
ROLLBACK - undo changes
DBA_2PC_PENDING V$TRANSACTION V$TRANSACTION_ENQUEUE