A colleague wants to do a large load using multiple PL/SQL programs;
she typically (has the DBA) turns off all rollback segments except for
SYSTEM and one large rollback segment.

Some questions:

Will the rollback segment called SYSTEM in the SYSTEM tablespace never
be used for user session transactions?

Is there any way to specify which rollback segment to use for an entire
session versus per transaction? I'm not sure if her PL/SQL code
performs implicit commits so I'm not sure doing one commit + set
transaction before executing the procedure(s) will have the desired
effect. Will Oracle ever do an implicit commit inside a PL/SQL
procedure or is a commit performed only with the commit command or when
exiting a procedure?

Thanks very much.

 - Dana






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