diff --git a/backup_rman.sh b/backup_rman.sh
index ba2209b..3ff5a5c 100755
--- a/backup_rman.sh
+++ b/backup_rman.sh
@@ -155,6 +155,7 @@ if [ "$LOG_MODE" == "NOARCHIVELOG" ]; then
 else
         # run {
         echo "
+        alter session set nls_date_format='DD/MM/YYYY HH24:MI:SS' ;
         CONFIGURE DEVICE TYPE DISK PARALLELISM $PARALLELISM ;
         CONFIGURE RETENTION POLICY TO REDUNDANCY ${BKP_REDUNDANCY};
         CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '${BKP_LOCATION}/ctrlfile_auto_%F';
diff --git a/check_rman_backup.sh b/check_rman_backup.sh
index b1e072e..4a8eb57 100755
--- a/check_rman_backup.sh
+++ b/check_rman_backup.sh
@@ -31,6 +31,13 @@ echo "-----------------------------------------------------"
 echo " Base de donnee a traiter: " $r
 echo "-----------------------------------------------------"
 export ORACLE_SID=$r
+
+# vérifier si ORACLE_SID est dans /etc/orata
+if [ "$(grep -v '^$|^#' /etc/oratab | grep -c "^${ORACLE_SID}:")" -ne 1 ]; then
+    echo "Base ${ORACLE_SID} absente du fichier /etc/oratab ... fin du script"
+    exit 2
+fi
+
 . oraenv -s > /dev/null
 sqlplus -S / as sysdba << EOF
 set head off pages 0 feedback off 
diff --git a/export_datapump.sh b/export_datapump.sh
index c9334b6..5410157 100755
--- a/export_datapump.sh
+++ b/export_datapump.sh
@@ -79,6 +79,9 @@ ORAENV_ASK=NO
 PATH=/usr/local/bin:$PATH
 . oraenv -s >/dev/null
 
+# si la base est standby on sort
+${SCRIPTS_DIR}/is_standby.sh ${ORACLE_SID} && exit 2
+
 #------------------------------------------------------------------------------
 # recuperation du NLS_CHARACTERSET
 #------------------------------------------------------------------------------