diff --git a/sql/21_datafile.sql b/sql/21_datafile.sql
index b544edc..ea93329 100644
--- a/sql/21_datafile.sql
+++ b/sql/21_datafile.sql
@@ -1,11 +1,19 @@
 prompt <h2>Détail des datafiles : </h2>
+
+COL file_name HEAD "Nom du datafile"
+COL file_id HEAD "File ID"
+COL TABLESPACE_NAME FORMAT A20 HEAD "Nom Tablespace"
+COL autoextensible FORMAT A15 HEAD "Auto Extensible"
+COL status head "Statut"
+COL online_status format a15 head "Online Statut"
+
 SELECT  
-       x.file_name, x.file_id, x.tablespace_name, 
-       round(x.bytes/1024/1024,0) "Bytes_Mo", x.status, x.autoextensible, 
-       round(x.maxbytes/1024/1024/1024,0) "MaxBytes_Go", x.online_status
-  FROM dba_data_files x
+       file_name, file_id, tablespace_name, 
+       round(bytes/1024/1024,0) "Bytes Mo", status, autoextensible, 
+       round(maxbytes/1024/1024,0) "MaxBytes Mo", online_status "Online Statut"
+  FROM dba_data_files 
  ORDER BY
-	   x.file_name;
+	   file_name;
 
 prompt <h2>Existance de blocks corrompus :</h2>
 select * from v$database_block_corruption;