diff --git a/sql/23_archive_log_per_day.sql b/sql/23_archive_log_per_day.sql
index 40ce7ed..f3973d9 100644
--- a/sql/23_archive_log_per_day.sql
+++ b/sql/23_archive_log_per_day.sql
@@ -66,9 +66,10 @@ order by to_char(first_time, 'YYYY/MM/dd')
 prompt <h2>Taille des redolog par jour :</h2>
 select
         to_char(first_time, 'YYYY/MM/dd') "Jour",
-    count(*) "Nbr de fichiers",
+        count(*) "Nbr de fichiers",
         ROUND(sum(BLOCKS*BLOCK_SIZE)/1024/1024, 0) "Taille_Mo"
 from v$archived_log
+where rownum<=30
 group by to_char(first_time, 'YYYY/MM/dd')
 order by to_char(first_time, 'YYYY/MM/dd')
 ;