diff --git a/database/update/db-update-2017-08-23.sh b/database/update/db-update-2017-08-23.sh
new file mode 100755
index 0000000..047c9e3
--- /dev/null
+++ b/database/update/db-update-2017-08-23.sh
@@ -0,0 +1,37 @@
+#!/bin/bash
+
+myname=`basename $0 .sh`
+
+# Pour Mac OS recent (10.10, Yosemite), la syntaxe du SED est differente
+# Il faut donc faire une copie de ce fichier et transformer les instructions sed a l'interieur
+# Pour cela, il suffit d'executer ces 2 lignes :
+# cp ce_script.sh ce_script_macosx.sh
+# sed -e "s/ -i / -i '' /" -i '' ce_script_macosx.sh
+
+if [ ! -f ../../config/app.php ] ; then
+echo "Vous devez executer ce script depuis le dossier database/update/"
+exit 1
+fi
+
+
+# Get login, pass, dbname, and hostname
+username=$(grep "/\*d\*/'username'" ../../config/app.php | cut -d"'" -f4)
+password=$(grep "/\*d\*/'password'" ../../config/app.php | cut -d"'" -f4)
+database=$(grep "/\*d\*/'database'" ../../config/app.php | cut -d"'" -f4)
+host=$(grep "/\*d\*/'host'" ../../config/app.php | cut -d"'" -f4)
+
+
+#cp -p ./script_sql/db-update-2016-07-01-irap.sql ./script_sql/db-update-2016-07-01-irap-build.sql
+cp -p ./script_sql/$myname.sql ./script_sql/$myname-build.sql
+
+# Execute sql update script
+sed -e "s/database/$database/" -i ./script_sql/$myname-build.sql
+mysql --user=$username --password=$password -h $host < ./script_sql/$myname-build.sql
+
+# Delete cakephp cache
+sudo rm ../../tmp/cache/models/*
+sudo rm ../../tmp/cache/persistent/*
+
+sudo chmod -R 777 ../../tmp
+sudo chmod -R 777 ../../vendor
+sudo chmod -R 777 ../../webroot
diff --git a/database/update/script_sql/db-update-2017-08-23.sql b/database/update/script_sql/db-update-2017-08-23.sql
new file mode 100644
index 0000000..2f43c54
--- /dev/null
+++ b/database/update/script_sql/db-update-2017-08-23.sql
@@ -0,0 +1,15 @@
+use database;
+
+drop table if exists materiels2;
+
+ALTER TABLE fichemetrologiques ENGINE = InnoDB;
+
+ALTER TABLE formules ENGINE = InnoDB;
+
+ALTER TABLE fournisseurs ENGINE = InnoDB;
+
+ALTER TABLE mesures ENGINE = InnoDB;
+
+ALTER TABLE unites ENGINE = InnoDB;
+
+ALTER TABLE variables ENGINE = InnoDB;
--
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