diff --git a/deps/oblib/src/lib/container/ob_array.h b/deps/oblib/src/lib/container/ob_array.h
index 9f4851001a..db9335de9f 100644
--- a/deps/oblib/src/lib/container/ob_array.h
+++ b/deps/oblib/src/lib/container/ob_array.h
@@ -98,6 +98,7 @@ public:
   virtual ~ObArrayImpl() __attribute__((noinline));
   inline void set_label(const lib::ObLabel &label) { block_allocator_.set_label(label); }
   inline void set_attr(const lib::ObMemAttr &attr) { block_allocator_.set_attr(attr); }
+  inline void set_tenant_id(const uint64_t &tenant_id) { block_allocator_.set_tenant_id(tenant_id); }
   inline void set_block_size(const int64_t block_size) { block_size_ = block_size; }
   inline int64_t get_block_size() const {return block_size_; }
   inline void set_block_allocator(const BlockAllocatorT &alloc) { block_allocator_ = alloc; }
diff --git a/src/sql/engine/join/ob_basic_nested_loop_join_op.cpp b/src/sql/engine/join/ob_basic_nested_loop_join_op.cpp
index 271010b130..4e88b72d02 100644
--- a/src/sql/engine/join/ob_basic_nested_loop_join_op.cpp
+++ b/src/sql/engine/join/ob_basic_nested_loop_join_op.cpp
@@ -77,7 +77,7 @@ int ObBasicNestedLoopJoinOp::prepare_rescan_params(bool is_group)
   ObPhysicalPlanCtx *plan_ctx = GET_PHY_PLAN_CTX(ctx_);
   CK(OB_NOT_NULL(plan_ctx));
   ObObjParam *param = NULL;
-  common::ObSEArray<common::ObObjParam, 8> params;
+  sql::ObTMArray<common::ObObjParam> params;
   common::ObSArray<int64_t> param_idxs;
   common::ObSArray<int64_t> param_expr_idxs;
   ObBatchRescanCtl *batch_rescan_ctl = (get_spec().enable_px_batch_rescan_ && is_group)
diff --git a/src/sql/engine/ob_operator.cpp b/src/sql/engine/ob_operator.cpp
index 16dffbbf58..00fd864f21 100644
--- a/src/sql/engine/ob_operator.cpp
+++ b/src/sql/engine/ob_operator.cpp
@@ -1615,7 +1615,7 @@ int ObBatchRescanParams::deep_copy_param(const common::ObObjParam &org_param,
 }
 
 int ObBatchRescanParams::append_batch_rescan_param(const ObIArray<int64_t> &param_idxs,
-    const ObSEArray<common::ObObjParam, 8> &res_objs)
+    const ObTMArray<common::ObObjParam> &res_objs)
 {
   int ret = OB_SUCCESS;
   if (OB_FAIL(params_.push_back(res_objs))) {
@@ -1632,7 +1632,7 @@ int ObBatchRescanParams::append_batch_rescan_param(const ObIArray<int64_t> &para
 }
 
 int ObBatchRescanParams::append_batch_rescan_param(const ObIArray<int64_t> &param_idxs,
-    const ObSEArray<ObObjParam, 8> &res_objs,
+    const ObTMArray<ObObjParam> &res_objs,
     const common::ObIArray<int64_t> &param_expr_idxs)
 {
   int ret = OB_SUCCESS;
diff --git a/src/sql/engine/ob_operator.h b/src/sql/engine/ob_operator.h
index e6a01d2fc6..6fd0af7c0f 100644
--- a/src/sql/engine/ob_operator.h
+++ b/src/sql/engine/ob_operator.h
@@ -108,9 +108,9 @@ public:
     return param_idxs_.at(idx);
   }
   int append_batch_rescan_param(const common::ObIArray<int64_t> &param_idxs,
-      const common::ObSEArray<common::ObObjParam, 8> &res_objs);
+      const sql::ObTMArray<common::ObObjParam> &res_objs);
   int append_batch_rescan_param(const common::ObIArray<int64_t> &param_idxs,
-      const common::ObSEArray<common::ObObjParam, 8> &res_objs,
+      const sql::ObTMArray<common::ObObjParam> &res_objs,
       const common::ObIArray<int64_t> &param_expr_idxs);
   void reset()
   {
@@ -132,7 +132,7 @@ public:
   int deep_copy_param(const common::ObObjParam &org_param, common::ObObjParam &new_param);
 public:
   common::ObArenaAllocator allocator_;
-  common::ObSArray<common::ObSEArray<common::ObObjParam, 8>> params_;
+  common::ObSArray<sql::ObTMArray<common::ObObjParam>> params_;
   common::ObSEArray<int64_t, 8> param_idxs_;
   common::ObSEArray<int64_t, 8> param_expr_idxs_;
   TO_STRING_KV(K(param_idxs_), K(params_), K_(param_expr_idxs));
diff --git a/src/sql/engine/subquery/ob_subplan_filter_op.h b/src/sql/engine/subquery/ob_subplan_filter_op.h
index b22d612939..ac65723ad3 100644
--- a/src/sql/engine/subquery/ob_subplan_filter_op.h
+++ b/src/sql/engine/subquery/ob_subplan_filter_op.h
@@ -16,6 +16,7 @@
 #include "sql/engine/ob_operator.h"
 #include "sql/engine/basic/ob_chunk_datum_store.h"
 #include "sql/engine/px/ob_px_util.h"
+#include "sql/ob_sql_define.h"
 
 namespace oceanbase
 {
@@ -271,7 +272,7 @@ private:
   ObBatchRescanParams rescan_batch_params_;
   int64_t left_row_idx_;
   ObBatchRescanCtl batch_rescan_ctl_;
-  common::ObSEArray<common::ObObjParam, 8> cur_params_;
+  sql::ObTMArray<common::ObObjParam> cur_params_;
   common::ObSArray<int64_t> cur_param_idxs_;
   common::ObSArray<int64_t> cur_param_expr_idxs_;
   common::ObSEArray<Iterator*, 8> subplan_iters_to_check_;
diff --git a/src/sql/executor/ob_slice_calc.h b/src/sql/executor/ob_slice_calc.h
index 94750507f1..45f1baa17f 100644
--- a/src/sql/executor/ob_slice_calc.h
+++ b/src/sql/executor/ob_slice_calc.h
@@ -324,7 +324,7 @@ protected:
   virtual int destroy() override;
 protected:
   // 存储同一个partition所对应的所有task id
-  typedef common::ObSEArray<int64_t, 8> TaskIdxArray;
+  typedef sql::ObTMArray<int64_t> TaskIdxArray;
   // pkey random情况下：数据可以发送到对应partition所在的SQC的任意一个task上，因此每一个partition都对应着
   // 一组task id
   // key: tablet_id
diff --git a/src/sql/ob_sql_define.h b/src/sql/ob_sql_define.h
index e003319ded..82ad4cc02d 100644
--- a/src/sql/ob_sql_define.h
+++ b/src/sql/ob_sql_define.h
@@ -17,6 +17,8 @@
 #include "share/datum/ob_datum.h"
 #include "common/object/ob_object.h"
 #include "share/ob_define.h"
+#include "deps/oblib/src/lib/container/ob_array.h"
+#include "src/share/rc/ob_tenant_base.h"
 
 namespace oceanbase
 {
@@ -28,6 +30,7 @@ struct ObSchemaObjVersion;
 }
 }
 using namespace common;
+
 namespace sql
 {
 const int64_t OB_SQL_MAX_CHILD_OPERATOR_NUM = 16;
@@ -632,6 +635,28 @@ struct ObWinfuncOptimizationOpt
   };
 };
 
+// class full name: ob tenant memory array.
+// Used to solve the following problem:
+// the initial memory allocation of ObSEArray is relatively large, leading to memory inflation issues in some scenarios.
+// Default to using the MTL_ID() tenant,
+// and the lifecycle of this class cannot cross tenants.
+template<typename T, typename BlockAllocatorT = ModulePageAllocator, bool auto_free = false, typename CallBack = ObArrayDefaultCallBack<T>, typename ItemEncode = DefaultItemEncode<T> >
+class ObTMArray final : public ObArrayImpl<T, BlockAllocatorT, auto_free, CallBack, ItemEncode>
+{
+public:
+  using ObArrayImpl<T, BlockAllocatorT, auto_free, CallBack, ItemEncode>::ObArrayImpl;
+  ObTMArray(int64_t block_size = std::min(static_cast<int64_t>(4 * sizeof(T)), OB_MALLOC_NORMAL_BLOCK_SIZE),
+        const BlockAllocatorT &alloc = BlockAllocatorT("TMArray"));
+};
+
+template<typename T, typename BlockAllocatorT, bool auto_free, typename CallBack, typename ItemEncode>
+ObTMArray<T, BlockAllocatorT, auto_free, CallBack, ItemEncode>::ObTMArray(int64_t block_size,
+                                                           const BlockAllocatorT &alloc)
+    : ObArrayImpl<T, BlockAllocatorT, auto_free, CallBack, ItemEncode>(block_size, alloc)
+{
+  this->set_tenant_id(MTL_ID());
+}
+
 }  // namespace sql
 }  // namespace oceanbase
 #endif /* OCEANBASE_SQL_OB_SQL_DEFINE_H_ */