Hi Willem,
> With this in mind it seems I should rather not add it by default?
Once again - it depends on what you want to achieve. If you do not enable the guaranteed retention, it is possible that long running queries will fail with "ORA-01555 snapshot too old", even if the retention period is not reached (because of the undo data is overwritten by DMLs). The retention is guaranteed, if you enable
guaranteed undo retention and so the queries will not fail with an ORA-01555 within this period, but maybe DMLs will fail, if the space is used up. So you have to choose between the two impacts.
> Should I follow roughly the same SAP note to move to PSAPUNDO tablespace and remove PSAPROLL and PSAPROLLBIG tablespaces?
There is no need for that (rollback segment) tablespaces anymore, if you switch to "undo_management = AUTOMATIC"
Regards
Stefan