fixed return

lightrag/kg/oracle_impl.py

@@ -332,6 +332,10 @@ class OracleKVStorage(BaseKVStorage):
 
     ################ INSERT METHODS ################
     async def upsert(self, data: dict[str, dict[str, Any]]) -> None:
+        logger.info(f"Inserting {len(data)} to {self.namespace}")
+        if not data:
+            return
+
         if is_namespace(self.namespace, NameSpace.KV_STORE_TEXT_CHUNKS):
             list_data = [
                 {