diff --git a/src/pl/ob_pl_stmt.cpp b/src/pl/ob_pl_stmt.cpp
index 5f2a9e2cf4..e85e824fce 100644
--- a/src/pl/ob_pl_stmt.cpp
+++ b/src/pl/ob_pl_stmt.cpp
@@ -4522,7 +4522,8 @@ int lookup_pl_symbol(const void *pl_ns, const char *symbol, size_t len, int64_t
    const oceanbase::pl::ObPLBlockNS *ns = static_cast<const oceanbase::pl::ObPLBlockNS *>(pl_ns);
    if (OB_FAIL(ns->resolve_symbol(var_name, type, pl_data_type, parent_id, var_index))) {
      LOG_WARN("failed to get var index", K(var_name), K(ret));
-   } else if (oceanbase::pl::ObPLExternalNS::LOCAL_VAR == type) {
+   } else if (oceanbase::pl::ObPLExternalNS::LOCAL_VAR == type
+              && !pl_data_type.is_cursor_type()) { // mysql can not access explicit cursor in sql/expression
      *idx = var_index;
    } else { /*do nothing*/ }
  }
diff --git a/src/sql/resolver/ob_resolver_utils.cpp b/src/sql/resolver/ob_resolver_utils.cpp
index ee8d07eae9..730fe1d4e7 100644
--- a/src/sql/resolver/ob_resolver_utils.cpp
+++ b/src/sql/resolver/ob_resolver_utils.cpp
@@ -772,10 +772,17 @@ int ObResolverUtils::check_type_match(const pl::ObPLResolveCtx &resolve_ctx,
         || ObExtendTC == ob_obj_type_class(dst_type)) {
       ret = OB_ERR_INVALID_TYPE_FOR_OP;
       LOG_WARN("argument count not match", K(ret), K(src_type), K(dst_type));
-    } else {
-      // 检查普通类型之间是否可以互转
-      OZ (ObObjCaster::can_cast_in_oracle_mode(dst_type,
+    } else { // 检查普通类型之间是否可以互转
+      if (lib::is_oracle_mode()) {
+        OZ (ObObjCaster::can_cast_in_oracle_mode(dst_type,
           dst_pl_type.get_meta_type()->get_collation_type(), src_type, src_coll_type));
+      } else if (!cast_supported(
+        src_type, src_coll_type, dst_type, dst_pl_type.get_meta_type()->get_collation_type())) {
+        ret = OB_ERR_INVALID_TYPE_FOR_OP;
+        LOG_WARN("inconsistent datatypes",
+          K(ret), K(src_type), K(src_coll_type),
+          K(dst_type), K(dst_pl_type.get_meta_type()->get_collation_type()));
+      }
     }
     bool is_numric_type = (IS_NUMRIC_TYPE(src_type) && IS_NUMRIC_TYPE(dst_type));
     OX (match_info = ObRoutineMatchInfo::MatchInfo(