diff --git a/dbgpt/serve/rag/connector.py b/dbgpt/serve/rag/connector.py
index da4fa785e..d4a76ffc8 100644
--- a/dbgpt/serve/rag/connector.py
+++ b/dbgpt/serve/rag/connector.py
@@ -3,7 +3,6 @@
 import copy
 import logging
 import os
-import chromadb
 from collections import defaultdict
 from typing import Any, DefaultDict, Dict, List, Optional, Tuple, Type, cast
 
@@ -225,7 +224,6 @@ def delete_vector_name(self, vector_name: str):
         try:
             if self.vector_name_exists():
                 self.client.delete_vector_name(vector_name)
-                chromadb.api.client.SharedSystemClient.clear_system_cache()
                 del pools[self._vector_store_type][vector_name]
         except Exception as e:
             logger.error(f"delete vector name {vector_name} failed: {e}")