diff --git a/src/pl/ob_pl_code_generator.cpp b/src/pl/ob_pl_code_generator.cpp
index 4cae892451..f0185fe969 100644
--- a/src/pl/ob_pl_code_generator.cpp
+++ b/src/pl/ob_pl_code_generator.cpp
@@ -4335,6 +4335,7 @@ int ObPLCodeGenerator::generate_get_collection_attr(ObLLVMValue &param_array,
                                          const ObObjAccessIdx &current_access,
                                          int64_t access_i,
                                          bool for_write,
+                                         bool is_assoc_array,
                                          ObLLVMValue &current_value,
                                          ObLLVMValue &ret_value_ptr,
                                          ObLLVMBasicBlock& exit)
@@ -4352,7 +4353,7 @@ int ObPLCodeGenerator::generate_get_collection_attr(ObLLVMValue &param_array,
   OZ (helper_.create_icmp(is_inited, not_init_value, ObLLVMHelper::ICMP_EQ, not_init));
   OZ (helper_.create_cond_br(not_init, not_init_block, after_init_block));
   OZ (helper_.set_insert_point(not_init_block));
-  OZ (helper_.get_int32(OB_NOT_INIT, ret_value));
+  OZ (helper_.get_int32(OB_ERR_COLLECION_NULL, ret_value));
   OZ (helper_.create_store(ret_value, ret_value_ptr));
   OZ (helper_.create_br(exit));
   OZ (helper_.set_insert_point(after_init_block));
@@ -4435,7 +4436,7 @@ int ObPLCodeGenerator::generate_get_collection_attr(ObLLVMValue &param_array,
         OZ (helper_.create_icmp(high, element_idx, ObLLVMHelper::ICMP_SGT, is_true));
         OZ (helper_.create_cond_br(is_true, after_block, error_block));
         OZ (helper_.set_insert_point(error_block));
-        OZ (helper_.get_int32(OB_ARRAY_OUT_OF_RANGE, ret_value));
+        OZ (helper_.get_int32(is_assoc_array ? OB_READ_NOTHING : OB_ERR_SUBSCRIPT_OUTSIDE_LIMIT, ret_value));
         OZ (helper_.create_store(ret_value, ret_value_ptr));
         OZ (helper_.create_br(exit));
         OZ (helper_.set_insert_point(after_block));
@@ -4572,6 +4573,7 @@ int ObPLCodeGenerator::generate_get_attr(ObLLVMValue &param_array,
                                          obj_access.at(i),
                                          i,
                                          for_write,
+                                         parent_type.is_associative_array_type(),
                                          value,
                                          ret_value_ptr,
                                          exit));
diff --git a/src/pl/ob_pl_code_generator.h b/src/pl/ob_pl_code_generator.h
index ceae8e7599..794978a9ec 100644
--- a/src/pl/ob_pl_code_generator.h
+++ b/src/pl/ob_pl_code_generator.h
@@ -657,6 +657,7 @@ private:
                                            const ObObjAccessIdx &current_access,
                                            int64_t access_i,
                                            bool for_write,
+                                           bool is_assoc_array,
                                            jit::ObLLVMValue &current_value,
                                            jit::ObLLVMValue &ret_value_ptr,
                                            jit::ObLLVMBasicBlock& exit);
diff --git a/src/sql/engine/expr/ob_expr_obj_access.cpp b/src/sql/engine/expr/ob_expr_obj_access.cpp
index 2d6f5604b0..7a1506599b 100644
--- a/src/sql/engine/expr/ob_expr_obj_access.cpp
+++ b/src/sql/engine/expr/ob_expr_obj_access.cpp
@@ -233,8 +233,8 @@ int ObExprObjAccess::ExtraInfo::get_collection_attr(int64_t* params,
   int64_t element_idx;
   CK (OB_NOT_NULL(current_coll));
   if (OB_SUCC(ret) && !current_coll->is_inited()) {
-    ret = OB_NOT_INIT;
-    LOG_WARN("", K(ret), KPC(current_coll));
+    ret = OB_ERR_COLLECION_NULL;
+    LOG_WARN("Reference to uninitialized collection", K(ret), KPC(current_coll));
   }
   if (OB_SUCC(ret) && !current_access.is_property()) {
     if (current_access.is_const()) {
@@ -383,7 +383,7 @@ int ObExprObjAccess::ExtraInfo::calc(ObObj &result,
       OZ (get_attr_func(param_array.count(), param_ptr, &attr_addr, *ctx));
     }
     if (OB_FAIL(ret)) {
-      if (OB_NOT_INIT == ret && pl::ObCollectionType::EXISTS_PROPERTY == property_type_) {
+      if (OB_ERR_COLLECION_NULL == ret && pl::ObCollectionType::EXISTS_PROPERTY == property_type_) {
         ret = OB_SUCCESS;
         result.set_tinyint(0);
       }