diff --git a/scripts/get_tables_sizes.sh b/scripts/get_tables_sizes.sh
new file mode 100755
index 0000000..3887e84
--- /dev/null
+++ b/scripts/get_tables_sizes.sh
@@ -0,0 +1,25 @@
+#!/bin/bash
+
+(
+mysql --defaults-file=/etc/mysql/debian.cnf hydra <<EOF
+SELECT
+  TABLE_NAME AS \`Table\`,
+  ROUND((DATA_LENGTH + INDEX_LENGTH) / 1024 / 1024) AS \`Size\`
+FROM
+  information_schema.TABLES
+WHERE
+  TABLE_SCHEMA = "hydra"
+ORDER BY
+  (DATA_LENGTH + INDEX_LENGTH)
+DESC;
+EOF
+) | while read table size; do
+  if [ "${table}" != Table ]; then
+    real_size=$(ls -lh /var/lib/mysql/hydra/${table}.ibd | cut -d' ' -f 5)
+  else
+    real_size="Taille réelle"
+  fi
+  echo -e ${table}\\t${size}M\\t${real_size}
+done
+
+echo $a
diff --git a/scripts/optimize_hydra b/scripts/optimize_hydra
new file mode 100755
index 0000000..a6283b4
--- /dev/null
+++ b/scripts/optimize_hydra
@@ -0,0 +1,49 @@
+#!/bin/bash
+
+# Optimize sur les tables d'Hydra
+
+echo "Begin date: $(date)"
+
+part=$1
+
+if [ -z "$part" ]; then
+    echo 'Bad empty part. Please give a number between 1 and 7'
+    exit 1
+fi
+
+case $part in
+    1)
+	tables='hydra_oauth2_access'
+	;;
+    2)
+	tables='hydra_oauth2_oidc'
+	;;
+    3)
+	tables='hydra_oauth2_code'
+	;;
+    4)
+	tables='hydra_oauth2_authentication_request'
+	;;
+    5)
+	tables='hydra_oauth2_consent_request'
+	;;
+    6)
+	tables='hydra_oauth2_logout_request, hydra_oauth2_consent_request_handled'
+	;;
+    7)
+	tables='hydra_oauth2_authentication_session, hydra_oauth2_authentication_request_handled, hydra_oauth2_pkce'
+	;;
+    *)
+	echo "Unexpected error. Part: $part"
+	exit 1
+esac
+
+mysql --defaults-file=/etc/mysql/debian.cnf hydra <<EOF
+OPTIMIZE TABLE $tables;
+EOF
+
+exit_val=$?
+
+echo "End date:   $(date)"
+
+exit $exit_val