RMAN> list backup of controlfile;

List of Backup Sets
Key Recid Stamp LV Set Stamp Set Count Completion Time
------- ---------- ---------- -- ---------- ---------- ----------------------
1610 21 495202466 0 495201800 26 28-MAY-03

List of Backup Pieces
Key Pc# Cp# Status Completion Time Piece Name
------- --- --- ----------- ---------------------- ------------------------
1611 1 1 AVAILABLE 28-MAY-03 Backup_full_DATABASE_26_1

Controlfile Included
Ckp SCN Ckp time
---------- ---------------
3231838458144 28-MAY-03