Hi Deepak,
But according to sap note 600141 :
- Recommendation for the Undo retention time:
- 12h as the start value
- As an indicator, the longest running SAP ABAP report can be used, if this is
known.
- You should not select an undo_retention parameter that is too small,
otherwise, 'ORA-01555' will appear more regularly than in manual Undo Management
mode.