diff --git a/dicos/25_bdd_server.xml b/dicos/25_bdd_server.xml
index c14f991..9376818 100644
--- a/dicos/25_bdd_server.xml
+++ b/dicos/25_bdd_server.xml
@@ -30,6 +30,9 @@
            <variable name="dbEnable" type='oui/non' description='Activer le serveur de base de données MariaDB'>
               <value>non</value>
            </variable>
+           <variable name="dbEnableBackup" type='oui/non' description='Activer la sauvegarde sur le serveur de base de données MariaDB'>
+              <value>non</value>
+           </variable>
         </family>
         <family name="Database">
             <variable name='dbEnableCluster' type='oui/non' description="Activer la mise en grappe MariaDB Galera ?">
@@ -64,6 +67,9 @@
             <variable name='dbInnoDBLogFileSize' type='number' description="Taille des fichiers de transaction InnoDB">
                 <value>6</value>
             </variable>
+            <variable name='dbInnoDBLockWaitTimeout' type='number' description="Nombre de millisecondes d'attente avant de fermer la connection en lock (innodb_lock_wait_timeout)">
+                <value>120</value>
+            </variable>
             <variable name="dbMaxConnections" type="number" description="Nombre de connection maximum pour le serveur de bases de données (max_connections)">
                 <value>100</value>
             </variable>
diff --git a/eole-mariadb.mk b/eole-mariadb.mk
index 7756e21..ca6673e 100644
--- a/eole-mariadb.mk
+++ b/eole-mariadb.mk
@@ -1 +1,3 @@
-creolefuncs_DATA_DIR := $(DESTDIR)/usr/share/creole/funcs
\ No newline at end of file
+creolefuncs_DATA_DIR := $(DESTDIR)/usr/share/creole/funcs
+schedule_extra_DATA_DIR := $(DESTDIR)/usr/share/eole/creole/extra/schedule/
+schedule_config_DATA_DIR := $(DESTDIR)/usr/share/eole/schedule/
diff --git a/schedule_config/config.sh b/schedule_config/config.sh
new file mode 100644
index 0000000..2562ef3
--- /dev/null
+++ b/schedule_config/config.sh
@@ -0,0 +1,7 @@
+# Configuration commune aux scripts schedule
+# Configuration de base modifiée pour copier dans le partage nfs plutôt que /home
+
+SAVDIR=/mnt/sauvegardes/
+# pour que l'affichage de [ ok ] soit ok
+export TERM='dumb'
+umask 0077
diff --git a/schedule_extra/01_mysql.xml b/schedule_extra/01_mysql.xml
new file mode 100644
index 0000000..cd4118c
--- /dev/null
+++ b/schedule_extra/01_mysql.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<creole>
+    <variables>
+        <family name="mysql" description="Exportation des bases de données MySQL">
+            <variable name="description" type="string" hidden="True"><value>Exportation des bases MySQL</value></variable>
+            <variable name="day" type="schedule" description="Périodicité d'exécution"><value>daily</value></variable>
+            <variable name="mode" type="schedulemod" hidden="True"><value>pre</value></variable>
+        </family>
+    </variables>
+    <constraints>
+        <fill name='calc_multi_condition' target='schedule.mysql.day'>
+            <param>non</param>
+	    <param type='eole' name='condition_1'>dbEnableBackup</param>
+            <param name='match'>none</param>
+            <param name='mismatch'>daily</param>
+        </fill>
+    </constraints>
+</creole>
diff --git a/schedule_scripts/mysql b/schedule_scripts/mysql
new file mode 100644
index 0000000..06b3ff9
--- /dev/null
+++ b/schedule_scripts/mysql
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+set -e
+
+DESC="Exportation des bases MySQL"
+
+. /usr/share/eole/schedule/config.sh
+
+MYSQLSAVDIR=$SAVDIR/sql
+OPTION="--lock-tables"
+
+rm -f $MYSQLSAVDIR/*.sql
+mkdir -p $MYSQLSAVDIR
+
+CMD="mysql --defaults-file=/etc/mysql/mariadb.cnf -e 'show databases' | grep -v '^Database$'"
+DATABASES=$(CreoleRun "$CMD" mysql)
+for databasename in $DATABASES; do
+    case "$databasename" in
+        information_schema|performance_schema|bareos)
+            continue
+            ;;
+        *)
+            CMD="mysqldump --defaults-file=/etc/mysql/mariadb.cnf --databases $databasename --flush-privileges --create-options -Q -c $OPTION 2>/dev/null"
+            CreoleRun "$CMD" mysql > $MYSQLSAVDIR/$databasename.sql
+            ;;
+    esac
+done
diff --git a/tmpl/tunning.cnf b/tmpl/tunning.cnf
index e0d2e8f..cf1e5f3 100644
--- a/tmpl/tunning.cnf
+++ b/tmpl/tunning.cnf
@@ -5,6 +5,7 @@ skip-name-resolve
 innodb_buffer_pool_size=%%getMemoryPercentage(%%getVar('dbInnoDBBufferPoolPercentage', 10))
 innodb_log_buffer_size=%%{dbInnoDBLogBufferSize}M
 innodb_log_file_size=%%{dbInnoDBLogFileSize}M
+innodb_lock_wait_timeout=%%{dbInnoDBLockWaitTimeout}
 
 max_connections=%%dbMaxConnections
 thread_cache_size=%%dbThreadCacheSize
@@ -14,6 +15,9 @@ query_cache_type = 1
 query_cache_limit = %%getVar('dbQueryCacheLimit')
 query_cache_min_res_unit = %%getVar('dbQueryCacheMinRestUnit')
 query_cache_size = %%getVar('dbQueryCacheSize')
+%else
+query_cache_type = 0
+query_cache_size = 0
 %end if
 
 tmp_table_size = %%dbTmpTableSize