diff --git a/tabellio/pcfdb/sync.py b/tabellio/pcfdb/sync.py
index b748e00..418ef7b 100644
--- a/tabellio/pcfdb/sync.py
+++ b/tabellio/pcfdb/sync.py
@@ -481,6 +481,11 @@ class SyncFromPcfDbView(BrowserView):
             notify(ObjectModifiedEvent(object))
             self.publish(object)
 
+            if count % 100 == 0:
+                transaction.commit()
+
+
+        transaction.commit()
         previous_count = count
 
         # currently active deputies
@@ -820,6 +825,9 @@ class SyncFromPcfDbView(BrowserView):
             else:
                 self.unpublish(object)
 
+            # many things happened, commit
+            transaction.commit()
+
         cursor.close()
         return count