diff --git a/sh/is_CDB.sh b/sh/is_CDB.sh
new file mode 100644
index 0000000..ac097a9
--- /dev/null
+++ b/sh/is_CDB.sh
@@ -0,0 +1,7 @@
+#! /bin/sh
+
+# Retourne YES ou NO selon que la base est une CDB ou non
+echo "
+SET PAGES 999 FEEDBACK OFF HEAD OFF
+select cdb from v\$database;
+exit" | sqlplus -s / as sysdba
\ No newline at end of file