--- a/Sphinx/source/plugins/mysql.rst	Mon Aug 19 09:37:31 2019 +0200
+++ b/Sphinx/source/plugins/mysql.rst	Sat Aug 24 10:53:13 2019 +0200
@@ -166,6 +166,8 @@
 you want several instances of Orthanc to share the same database, set
 the ``Lock`` option to ``false`` in the configuration file.
 
-Obviously, one must be very cautious when sharing the same database
-between instances of Orthanc. In particular, all these instances
-should share the same configuration.
+In the absence of locking, the same limitation apply to the
+MySQL/MariaDB plugins than to the PostgreSQL plugins (i.e. at most one
+instance of Orthanc writing to the database).  For more information,
+please check out the :ref:`documentation for PostgreSQL
+<postgresql-lock>`.