diff --git a/HowtoMySQL/Troubleshooting.md b/HowtoMySQL/Troubleshooting.md
index 65d5a860..1fc643d3 100644
--- a/HowtoMySQL/Troubleshooting.md
+++ b/HowtoMySQL/Troubleshooting.md
@@ -544,3 +544,24 @@ Enfin supprimer l'utilisateur root :
 ~~~
 MariaDB [(none)]> DELETE FROM mysql.user where User='root';
 ~~~
+
+## Connaître la taille des bases
+
+~~~
+$ mysql mysql
+mysql> SELECT table_schema AS "Database Name", 
+ROUND(SUM(data_length + index_length) / 1024 / 1024, 2) AS "Size in (MB)" 
+FROM information_schema.TABLES 
+GROUP BY table_schema; 
+~~~
+
+## Connaître la taille des tables d'une base
+
+~~~
+$ mysql mysql
+mysql> SELECT table_name AS "Table Name",
+ROUND(((data_length + index_length) / 1024 / 1024), 2) AS "Size in (MB)"
+FROM information_schema.TABLES
+WHERE table_schema = "<NOM_BDD>"
+ORDER BY (data_length + index_length) DESC;
+~~~
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