fix: reset() only drops history table, leaving stale messages (#5541)

mem0/memory/main.py

@@ -1934,10 +1934,8 @@ class Memory(MemoryBase):
         """
         logger.warning("Resetting all memories")
 
-        if hasattr(self.db, "connection") and self.db.connection:
-            self.db.connection.execute("DROP TABLE IF EXISTS history")
-            self.db.connection.close()
-
+        self.db.reset()
+        self.db.close()
         self.db = SQLiteManager(self.config.history_db_path)
 
         if hasattr(self.vector_store, "reset"):
@@ -3509,10 +3507,8 @@ class AsyncMemory(MemoryBase):
         if hasattr(self.vector_store, "client") and hasattr(self.vector_store.client, "close"):
             await asyncio.to_thread(self.vector_store.client.close)
 
-        if hasattr(self.db, "connection") and self.db.connection:
-            await asyncio.to_thread(lambda: self.db.connection.execute("DROP TABLE IF EXISTS history"))
-            await asyncio.to_thread(self.db.connection.close)
-
+        await asyncio.to_thread(self.db.reset)
+        await asyncio.to_thread(self.db.close)
         self.db = SQLiteManager(self.config.history_db_path)
 
         self.vector_store = VectorStoreFactory.create(

mem0/memory/storage.py

@@ -324,7 +324,9 @@ class SQLiteManager:
         ]
 
     def reset(self) -> None:
-        """Drop and recreate the history and messages tables."""
+        """Drop both tables. Caller is expected to replace this instance."""
+        if not self.connection:
+            raise RuntimeError("Cannot reset a closed SQLiteManager")
         with self._lock:
             try:
                 self.connection.execute("BEGIN")
@@ -335,8 +337,6 @@ class SQLiteManager:
                 self.connection.execute("ROLLBACK")
                 logger.error(f"Failed to reset tables: {e}")
                 raise
-        self._create_history_table()
-        self._create_messages_table()
 
     def close(self) -> None:
         if self.connection: