diff --git a/changelogs/fragments/479_enable_auto_commit.yml b/changelogs/fragments/479_enable_auto_commit.yml
new file mode 100644
index 00000000..5701f305
--- /dev/null
+++ b/changelogs/fragments/479_enable_auto_commit.yml
@@ -0,0 +1,3 @@
+---
+minor_changes:
+  - mysql_user - enable auto_commit to avoid MySQL metadata table lock (https://github.com/ansible-collections/community.mysql/issues/479).
diff --git a/plugins/modules/mysql_user.py b/plugins/modules/mysql_user.py
index 8acb8a35..bd488b05 100644
--- a/plugins/modules/mysql_user.py
+++ b/plugins/modules/mysql_user.py
@@ -433,13 +433,13 @@ def main():
         if check_implicit_admin:
             try:
                 cursor, db_conn = mysql_connect(module, "root", "", config_file, ssl_cert, ssl_key, ssl_ca, db,
-                                                connect_timeout=connect_timeout, check_hostname=check_hostname)
+                                                connect_timeout=connect_timeout, check_hostname=check_hostname, autocommit=True)
             except Exception:
                 pass
 
         if not cursor:
             cursor, db_conn = mysql_connect(module, login_user, login_password, config_file, ssl_cert, ssl_key, ssl_ca, db,
-                                            connect_timeout=connect_timeout, check_hostname=check_hostname)
+                                            connect_timeout=connect_timeout, check_hostname=check_hostname, autocommit=True)
     except Exception as e:
         module.fail_json(msg="unable to connect to database, check login_user and login_password are correct or %s has the credentials. "
                              "Exception message: %s" % (config_file, to_native(e)))