计算UNDO恢复完成时间

计算UNDO恢复完成时间

set linesize 100
alter session set NLS_DATE_FORMAT='DD-MON-YYYY HH24:MI:SS';
select usn, state, undoblockstotal "Total", undoblocksdone "Done", undoblockstotal-undoblocksdone "ToDo",
decode(cputime,0,'unknown',sysdate+(((undoblockstotal-undoblocksdone) / (undoblocksdone / cputime)) / 86400)) "Estimated time to complete"
from v$fast_start_transactions;