diff --git a/be/src/agent/task_worker_pool.cpp b/be/src/agent/task_worker_pool.cpp
index 3d398d6425..058312227b 100644
--- a/be/src/agent/task_worker_pool.cpp
+++ b/be/src/agent/task_worker_pool.cpp
@@ -189,6 +189,7 @@ void alter_tablet(StorageEngine& engine, const TAgentTaskRequest& agent_task_req
         new_tablet_id = agent_task_req.alter_tablet_req_v2.new_tablet_id;
         new_schema_hash = agent_task_req.alter_tablet_req_v2.new_schema_hash;
         EngineAlterTabletTask engine_task(agent_task_req.alter_tablet_req_v2);
+        SCOPED_ATTACH_TASK(engine_task.mem_tracker());
         status = engine_task.execute();
     }
 
diff --git a/be/src/olap/task/engine_alter_tablet_task.cpp b/be/src/olap/task/engine_alter_tablet_task.cpp
index 21f63d58e7..44a42151f5 100644
--- a/be/src/olap/task/engine_alter_tablet_task.cpp
+++ b/be/src/olap/task/engine_alter_tablet_task.cpp
@@ -35,7 +35,7 @@ namespace doris {
 
 EngineAlterTabletTask::EngineAlterTabletTask(const TAlterTabletReqV2& request)
         : _alter_tablet_req(request) {
-    _mem_tracker = std::make_shared<MemTrackerLimiter>(
+    _mem_tracker = MemTrackerLimiter::create_shared(
             MemTrackerLimiter::Type::SCHEMA_CHANGE,
             fmt::format("EngineAlterTabletTask#baseTabletId={}:newTabletId={}",
                         std::to_string(_alter_tablet_req.base_tablet_id),