2 files changed, 6 insertions, 2 deletions

diff --git a/src/mailman/config/config.py b/src/mailman/config/config.py
index e8c8ebc8b..287de9798 100644
--- a/src/mailman/config/config.py
+++ b/src/mailman/config/config.py
@@ -87,6 +87,7 @@ class Configuration:
         self.pipelines = {}
         self.commands = {}
         self.password_context = None
+        self.initialized = False
 
     def _clear(self):
         """Clear the cached configuration variables."""
@@ -136,6 +137,7 @@ class Configuration:
         # Expand and set up all directories.
         self._expand_paths()
         self.ensure_directories_exist()
+        self.initialized = True
         notify(ConfigurationUpdatedEvent(self))
 
     def _expand_paths(self):
diff --git a/src/mailman/database/alembic/env.py b/src/mailman/database/alembic/env.py
index ff0f8231f..402c4f7da 100644
--- a/src/mailman/database/alembic/env.py
+++ b/src/mailman/database/alembic/env.py
@@ -41,7 +41,8 @@ def run_migrations_offline():
     script output.
 
     """
-    initialize.initialize_1(context.config.config_file_name)
+    if not config.initialized:
+        initialize.initialize_1(context.config.config_file_name)
     alembic_cfg= Config()
     alembic_cfg.set_main_option(
         "script_location", config.alembic['script_location'])
@@ -59,7 +60,8 @@ def run_migrations_online():
     and associate a connection with the context.
 
     """
-    initialize.initialize_1(context.config.config_file_name)
+    if not config.initialized:
+        initialize.initialize_1(context.config.config_file_name)
     alembic_cfg= Config()
     alembic_cfg.set_main_option(
         "script_location", config.alembic['script_location'])