Need to commit periodically. flush_insert_instances is the most logical

place although that may be a bit too often.

lib/Simba/CA.pm

@@ -552,6 +552,7 @@ sub flush_insert_instances {
                   );
         $dbh->do($cmd);
     }
+    $dbh->commit();
     $self->{caches}{insert_instances} = [];
 }