Below is the script to find the utilizations of redo logs

SELECT le.leseq "Current log sequence No", 
100*cp.cpodr_bno/le.lesiz "Percent Full", 
cp.cpodr_bno "Current Block No", 
le.lesiz "Size of Log in Blocks" 
FROM x$kcccp cp, x$kccle le 
WHERE le.leseq =CP.cpodr_seq 
AND bitand(le.leflg,24) = 8 
/