1 files changed, 8 insertions, 1 deletions
diff --git a/lib/gitlab/database/tables_truncate.rb b/lib/gitlab/database/tables_truncate.rb
index 164520fbab3..8380bf23899 100644
--- a/lib/gitlab/database/tables_truncate.rb
+++ b/lib/gitlab/database/tables_truncate.rb
@@ -14,7 +14,7 @@ module Gitlab
       end
 
       def execute
-        raise "Cannot truncate legacy tables in single-db setup" unless Gitlab::Database.has_config?(:ci)
+        raise "Cannot truncate legacy tables in single-db setup" if single_database_setup?
         raise "database is not supported" unless %w[main ci].include?(database_name)
 
         logger&.info "DRY RUN:" if dry_run
@@ -91,6 +91,13 @@ module Gitlab
           end
         end
       end
+
+      def single_database_setup?
+        return true unless Gitlab::Database.has_config?(:ci)
+
+        ci_base_model = Gitlab::Database.database_base_models[:ci]
+        !!Gitlab::Database.db_config_share_with(ci_base_model.connection_db_config)
+      end
     end
   end
 end