I just noticed this in 11g Licensing doc ( http://download.oracle.com/docs/cd/B28359_01/license.111/b28287/options.htm#sthref69 ):
- All data dictionary views beginning with the prefix DBA_HIST_ are part of this pack, along with their underlying tables.The only exception are the views: DBA_HIST_SNAPSHOT, DBA_HIST_DATABASE_INSTANCE, DBA_HIST_SNAP_ERROR, DBA_HIST_SEG_STAT, DBA_HIST_SEG_STAT_OBJ, and DBA_HIST_UNDOSTAT. They can be used without the Diagnostic Pack license.
This exception is not present in 10.2 license guide, so before 11g you can query V$SEGMENT_STATISTICS and V$UNDOSTAT’s history “for free” :)
Of course, collecting this data manually with a 1-line PL/SQL loop script isn’t hard either :)
NB! After a 1.5 year break, this year’s only Advanced Oracle Troubleshooting training class (updated with Oracle 12c content) takes place on 16-20 November & 14-18 December 2015, so sign up now if you plan to attend this year!