diff --git a/src/sql/ob_spi.h b/src/sql/ob_spi.h
index 5265168802..8f32f8a5ed 100644
--- a/src/sql/ob_spi.h
+++ b/src/sql/ob_spi.h
@@ -243,6 +243,22 @@ class ObSPIService
 public:
   struct ObSPIPrepareResult
   {
+    ObSPIPrepareResult() :
+    type_(stmt::T_NONE),
+    for_update_(false),
+    has_hidden_rowid_(false),
+    exec_params_(),
+    into_exprs_(),
+    ref_objects_(),
+    route_sql_(),
+    record_type_(nullptr),
+    tg_timing_event_(),
+    rowid_table_id_(OB_INVALID_ID),
+    ps_sql_(),
+    is_bulk_(false),
+    has_dup_column_name_(false),
+    has_link_table_(false)
+    {}
     stmt::StmtType type_; //prepare的语句类型
     bool for_update_;
     bool has_hidden_rowid_;
diff --git a/src/sql/optimizer/ob_optimizer.cpp b/src/sql/optimizer/ob_optimizer.cpp
index 445f1bfc14..ce1a9c662b 100644
--- a/src/sql/optimizer/ob_optimizer.cpp
+++ b/src/sql/optimizer/ob_optimizer.cpp
@@ -426,7 +426,7 @@ int ObOptimizer::check_pdml_supported_feature(const ObDelUpdStmt &pdml_stmt,
     ctx_.add_plan_note(PDML_DISABLED_BY_INSERT_UP);
   } else if (ctx_.has_dblink()) {
     is_use_pdml = false;
-  } else if (!ctx_.has_trigger() && ctx_.contain_user_nested_sql()) {
+  } else if (ctx_.contain_user_nested_sql()) {
     //user nested sql can't use PDML plan, force to use DAS plan
     //if online ddl has pl udf, only this way, allow it use PDML plan
     //such as:
@@ -435,11 +435,6 @@ int ObOptimizer::check_pdml_supported_feature(const ObDelUpdStmt &pdml_stmt,
     //create index with PL UDF allow to use PDML plan during build index table
     is_use_pdml = false;
     ctx_.add_plan_note(PDML_DISABLED_BY_NESTED_SQL);
-  } else if (!ctx_.is_online_ddl() && ctx_.has_trigger() && !ctx_.is_allow_parallel_trigger()) {
-    // if sql linked trigger, and trigger do not access package var, sequence, sql stmt etc..,
-    // allow it use PDML plan
-    is_use_pdml = false;
-    ctx_.add_plan_note(PDML_DISABLED_BY_NESTED_SQL);
   } else if (stmt::T_DELETE == pdml_stmt.get_stmt_type()) {
     //
     // if no trigger, no foreign key, delete can do pdml, even if with local unique index
@@ -745,7 +740,6 @@ int ObOptimizer::check_whether_contain_nested_sql(const ObDMLStmt &stmt)
       const ObTableSchema *table_schema = nullptr;
       ObSQLSessionInfo *session = ctx_.get_session_info();
       bool trigger_exists = false;
-      bool is_forbid_parallel = false;
       if (OB_ISNULL(table_info) || OB_ISNULL(schema_guard) || OB_ISNULL(session)) {
         ret = OB_ERR_UNEXPECTED;
         LOG_WARN("sql schema guard is nullptr", K(ret), K(table_info), K(schema_guard), K(session));
@@ -764,13 +758,6 @@ int ObOptimizer::check_whether_contain_nested_sql(const ObDMLStmt &stmt)
           ctx_.set_has_trigger(true);
         }
       }
-      if (OB_SUCC(ret) && trigger_exists) {
-        if (OB_FAIL(table_schema->is_allow_parallel_of_trigger(*schema_guard, is_forbid_parallel))) {
-          LOG_WARN("check allow parallel failed", K(ret));
-        } else if (!is_forbid_parallel) {
-          ctx_.set_allow_parallel_trigger(true);
-        }
-      }
     }
   }
   return ret;
diff --git a/src/sql/optimizer/ob_optimizer_context.h b/src/sql/optimizer/ob_optimizer_context.h
index 907d196a96..adf3a84428 100644
--- a/src/sql/optimizer/ob_optimizer_context.h
+++ b/src/sql/optimizer/ob_optimizer_context.h
@@ -573,8 +573,6 @@ ObOptimizerContext(ObSQLSessionInfo *session_info,
   bool has_trigger() const { return has_trigger_; }
   void set_has_pl_udf(bool v) { has_pl_udf_ = v; }
   bool has_pl_udf() const { return has_pl_udf_; }
-  void set_allow_parallel_trigger(bool v) { is_allow_parallel_trigger_ = v; }
-  bool is_allow_parallel_trigger() const { return is_allow_parallel_trigger_; }
   void set_has_cursor_expression(bool v) { has_cursor_expression_ = v; }
   bool has_cursor_expression() const { return has_cursor_expression_; }
   void set_has_dblink(bool v) { has_dblink_ = v; }
@@ -671,7 +669,6 @@ private:
       int8_t has_pl_udf_                       : 1; //this sql has pl user defined function
       int8_t has_subquery_in_function_table_   : 1; //this stmt has function table
       int8_t has_dblink_                       : 1; //this stmt has dblink table
-      int8_t is_allow_parallel_trigger_        : 1; //this sql linked trigger can parallel execute
       int8_t has_cursor_expression_            : 1; //this sql has cursor expression
     };
   };
diff --git a/src/sql/resolver/ob_resolver_utils.cpp b/src/sql/resolver/ob_resolver_utils.cpp
index 78a894d8d1..79532ccca5 100644
--- a/src/sql/resolver/ob_resolver_utils.cpp
+++ b/src/sql/resolver/ob_resolver_utils.cpp
@@ -6909,7 +6909,8 @@ int ObResolverUtils::set_parallel_info(sql::ObSQLSessionInfo &session_info,
     }
 
     if (OB_SUCC(ret) && OB_NOT_NULL(routine_info)) {
-      if (routine_info->is_modifies_sql_data() ||
+      if (!routine_info->is_valid() ||
+          routine_info->is_modifies_sql_data() ||
           routine_info->is_wps() ||
           routine_info->is_rps() ||
           routine_info->is_has_sequence() ||