diff --git a/src/sql/code_generator/ob_static_engine_cg.cpp b/src/sql/code_generator/ob_static_engine_cg.cpp
index 7823eec379826753ec73bcffbd1fd35e52c436c5..e917dc24b321c4d1ab9d3e4448f632bf0d725460 100644
--- a/src/sql/code_generator/ob_static_engine_cg.cpp
+++ b/src/sql/code_generator/ob_static_engine_cg.cpp
@@ -1762,6 +1762,16 @@ int ObStaticEngineCG::generate_spec(ObLogSort &op, ObSortSpec &spec, const bool
         spec.part_cnt_ = op.get_part_cnt();
         LOG_TRACE("trace order by", K(spec.all_exprs_.count()), K(spec.all_exprs_));
       }
+      if (OB_SUCC(ret)) {
+        if (spec.sort_collations_.count() != spec.sort_cmp_funs_.count()
+            || (spec.part_cnt_ > 0 && spec.part_cnt_ >= spec.sort_collations_.count())) {
+          ret = OB_INVALID_ARGUMENT;
+          LOG_WARN("part cnt or sort size not meet the expection", K(ret),
+            K(OB_NOT_NULL(op.get_topn_expr())), K(OB_NOT_NULL(op.get_topk_limit_expr())),
+            K(spec.enable_encode_sortkey_opt_), K(spec.prefix_pos_), K(spec.is_local_merge_sort_),
+            K(spec.part_cnt_), K(spec.sort_collations_.count()), K(spec.sort_cmp_funs_.count()));
+        }
+      }
     }
   }
   return ret;
diff --git a/src/sql/engine/sort/ob_sort_op_impl.cpp b/src/sql/engine/sort/ob_sort_op_impl.cpp
index 287a2ace7c9e2f21a05e98754185cb2762e32e6a..4682c10a6119820bf917454530959ff03ae78696 100644
--- a/src/sql/engine/sort/ob_sort_op_impl.cpp
+++ b/src/sql/engine/sort/ob_sort_op_impl.cpp
@@ -596,12 +596,11 @@ int ObSortOpImpl::init(
   } else if (OB_INVALID_ID == tenant_id) {
     ret = OB_INVALID_ARGUMENT;
     LOG_WARN("invalid argument", K(ret), K(tenant_id));
-  } else if (OB_ISNULL(sort_collations) || OB_ISNULL(sort_cmp_funs) || OB_ISNULL(eval_ctx)
-            || sort_collations->count() != sort_cmp_funs->count() || OB_ISNULL(exec_ctx)
-            || part_cnt > sort_collations->count()) {
+  } else if (OB_ISNULL(sort_collations) || OB_ISNULL(sort_cmp_funs)
+             || OB_ISNULL(eval_ctx) || OB_ISNULL(exec_ctx)) {
     ret = OB_INVALID_ARGUMENT;
-    LOG_WARN("invalid argument: argument is null", K(ret), K(tenant_id),
-              K(sort_collations), K(sort_cmp_funs), K(eval_ctx), K(part_cnt));
+    LOG_WARN("invalid argument: argument is null", K(ret),
+              K(tenant_id), K(sort_collations), K(sort_cmp_funs), K(eval_ctx));
   } else if (OB_FAIL(comp_.init(sort_collations, sort_cmp_funs,
                       exec_ctx, enable_encode_sortkey))) {
     LOG_WARN("failed to init compare functions", K(ret));