diff --git a/tskv/src/database.rs b/tskv/src/database.rs
index 1a7e05edd2..7fe86cf110 100644
--- a/tskv/src/database.rs
+++ b/tskv/src/database.rs
@@ -40,8 +40,6 @@ pub struct Database {
     schemas: Arc<DBschemas>,
     ts_indexes: HashMap<TseriesFamilyId, Arc<index::ts_index::TSIndex>>,
     ts_families: HashMap<TseriesFamilyId, Arc<RwLock<TseriesFamily>>>,
-    memory_pool: MemoryPoolRef,
-    metrics_register: Arc<MetricsRegister>,
     tsf_factory: TsfFactory,
 }
 
@@ -102,8 +100,6 @@ impl Database {
             schemas: Arc::new(DBschemas::new(schema, meta).await.context(SchemaSnafu)?),
             ts_indexes: HashMap::new(),
             ts_families: HashMap::new(),
-            memory_pool,
-            metrics_register,
             tsf_factory,
         };
 
diff --git a/tskv/src/tseries_family.rs b/tskv/src/tseries_family.rs
index d71ff7a539..0451cf1d5d 100644
--- a/tskv/src/tseries_family.rs
+++ b/tskv/src/tseries_family.rs
@@ -714,9 +714,7 @@ impl TsfFactory {
             metrics_register,
         }
     }
-}
 
-impl TsfFactory {
     pub fn create_tsf(
         &self,
         tf_id: TseriesFamilyId,