diff --git a/src/common/backend/catalog/builtin_funcs.ini b/src/common/backend/catalog/builtin_funcs.ini
index d7a3bfe29..295e032c6 100755
--- a/src/common/backend/catalog/builtin_funcs.ini
+++ b/src/common/backend/catalog/builtin_funcs.ini
@@ -2114,11 +2114,11 @@
     ),
     AddFuncGroup(
         "cursor_to_xml", 1, 
-        AddBuiltinFunc(_0(2925), _1("cursor_to_xml"), _2(5), _3(false), _4(false), _5(cursor_to_xml), _6(142), _7(PG_CATALOG_NAMESPACE), _8(BOOTSTRAP_SUPERUSERID), _9(INTERNALlanguageId), _10(100), _11(0), _12(0), _13(0), _14(false), _15(false), _16(false), _17(false), _18('s'), _19(0), _20(5, 1790, 23, 16, 16, 25), _21(NULL), _22(NULL), _23(5, "cursor", "count", "nulls", "tableforest", "targetns"), _24(NULL), _25("cursor_to_xml"), _26(NULL), _27(NULL), _28(NULL), _29(0), _30(false), _31(NULL), _32(false), _33("map rows from cursor to XML"), _34('f'), _35(NULL),  _36(0), _37(false), _38(NULL), _39(NULL), _40(0))
+        AddBuiltinFunc(_0(CURSORTOXMLOID), _1("cursor_to_xml"), _2(5), _3(false), _4(false), _5(cursor_to_xml), _6(142), _7(PG_CATALOG_NAMESPACE), _8(BOOTSTRAP_SUPERUSERID), _9(INTERNALlanguageId), _10(100), _11(0), _12(0), _13(0), _14(false), _15(false), _16(false), _17(false), _18('s'), _19(0), _20(5, 1790, 23, 16, 16, 25), _21(NULL), _22(NULL), _23(5, "cursor", "count", "nulls", "tableforest", "targetns"), _24(NULL), _25("cursor_to_xml"), _26(NULL), _27(NULL), _28(NULL), _29(0), _30(false), _31(NULL), _32(false), _33("map rows from cursor to XML"), _34('f'), _35(NULL),  _36(0), _37(false), _38(NULL), _39(NULL), _40(0))
     ),
     AddFuncGroup(
         "cursor_to_xmlschema", 1, 
-        AddBuiltinFunc(_0(2928), _1("cursor_to_xmlschema"), _2(4), _3(false), _4(false), _5(cursor_to_xmlschema), _6(142), _7(PG_CATALOG_NAMESPACE), _8(BOOTSTRAP_SUPERUSERID), _9(INTERNALlanguageId), _10(100), _11(0), _12(0), _13(0), _14(false), _15(false), _16(false), _17(false), _18('s'), _19(0), _20(4, 1790, 16, 16, 25), _21(NULL), _22(NULL), _23(4, "cursor", "nulls", "tableforest", "targetns"), _24(NULL), _25("cursor_to_xmlschema"), _26(NULL), _27(NULL), _28(NULL), _29(0), _30(false), _31(NULL), _32(false), _33("map cursor structure to XML Schema"), _34('f'), _35(NULL),  _36(0), _37(false), _38(NULL), _39(NULL), _40(0))
+        AddBuiltinFunc(_0(CURSORTOXMLSCHEMAOID), _1("cursor_to_xmlschema"), _2(4), _3(false), _4(false), _5(cursor_to_xmlschema), _6(142), _7(PG_CATALOG_NAMESPACE), _8(BOOTSTRAP_SUPERUSERID), _9(INTERNALlanguageId), _10(100), _11(0), _12(0), _13(0), _14(false), _15(false), _16(false), _17(false), _18('s'), _19(0), _20(4, 1790, 16, 16, 25), _21(NULL), _22(NULL), _23(4, "cursor", "nulls", "tableforest", "targetns"), _24(NULL), _25("cursor_to_xmlschema"), _26(NULL), _27(NULL), _28(NULL), _29(0), _30(false), _31(NULL), _32(false), _33("map cursor structure to XML Schema"), _34('f'), _35(NULL),  _36(0), _37(false), _38(NULL), _39(NULL), _40(0))
     ),
     AddFuncGroup(
         "database_to_xml", 1, 
diff --git a/src/common/backend/catalog/namespace.cpp b/src/common/backend/catalog/namespace.cpp
index 28d6d5cd3..3310ebca6 100644
--- a/src/common/backend/catalog/namespace.cpp
+++ b/src/common/backend/catalog/namespace.cpp
@@ -1059,6 +1059,11 @@ bool IsPlpgsqlLanguageOid(Oid langoid)
     bool isNull = true;
     char* langName = NULL;
 
+    if (langoid == INTERNALlanguageId || langoid == ClanguageId
+        || langoid == SQLlanguageId || langoid == JavalanguageId) {
+        return false;
+    }
+
     Relation relation = heap_open(LanguageRelationId, NoLock);
     tp = SearchSysCache1(LANGOID, ObjectIdGetDatum(langoid));
     if (!HeapTupleIsValid(tp)) {
diff --git a/src/gausskernel/runtime/executor/execQual.cpp b/src/gausskernel/runtime/executor/execQual.cpp
index 9e39c192c..4efe98b5e 100644
--- a/src/gausskernel/runtime/executor/execQual.cpp
+++ b/src/gausskernel/runtime/executor/execQual.cpp
@@ -2905,6 +2905,13 @@ extern bool func_has_refcursor_args(Oid Funcid, FunctionCallInfoData* fcinfo)
    bool return_refcursor = false;
    int out_count = 0; /* out arg count */
 
+   fcinfo->refcursor_data.return_number = 0;
+   fcinfo->refcursor_data.returnCursor = NULL;
+
+   if (IsSystemObjOid(Funcid) && Funcid != CURSORTOXMLOID && Funcid != CURSORTOXMLSCHEMAOID) {
+        return false;
+   }
+
    proctup = SearchSysCache(PROCOID, ObjectIdGetDatum(Funcid), 0, 0, 0);
 
    /*
@@ -2918,8 +2925,6 @@ extern bool func_has_refcursor_args(Oid Funcid, FunctionCallInfoData* fcinfo)
    allarg = get_func_arg_info(proctup, &p_argtypes, &p_argnames, &p_argmodes);
    procStruct = (Form_pg_proc)GETSTRUCT(proctup);
 
-   fcinfo->refcursor_data.return_number = 0;
-   fcinfo->refcursor_data.returnCursor = NULL;
    for (int i = 0; i < allarg; i++) {
        if (p_argmodes != NULL && (p_argmodes[i] == 'o' || p_argmodes[i] == 'b')) {
            out_count++;
diff --git a/src/gausskernel/runtime/executor/execUtils.cpp b/src/gausskernel/runtime/executor/execUtils.cpp
index 77989d9d3..2e59283f8 100644
--- a/src/gausskernel/runtime/executor/execUtils.cpp
+++ b/src/gausskernel/runtime/executor/execUtils.cpp
@@ -2923,6 +2923,9 @@ bool expr_func_has_refcursor_args(Oid Funcid)
     char* p_argmodes = NULL;
     bool use_cursor = false;
 
+    if (IsSystemObjOid(Funcid) && Funcid != CURSORTOXMLOID && Funcid != CURSORTOXMLSCHEMAOID) {
+        return false;
+    }
     proctup = SearchSysCache(PROCOID, ObjectIdGetDatum(Funcid), 0, 0, 0);
 
     /*
diff --git a/src/include/catalog/pg_proc.h b/src/include/catalog/pg_proc.h
index 215c1b3d4..2f90776ee 100644
--- a/src/include/catalog/pg_proc.h
+++ b/src/include/catalog/pg_proc.h
@@ -427,6 +427,8 @@ typedef FormData_pg_proc *Form_pg_proc;
 #define JSONAGGFUNCOID 3124
 #define JSONOBJECTAGGFUNCOID 3403
 #define GROUPCONCATFUNCOID 4097
+#define CURSORTOXMLOID 2925
+#define CURSORTOXMLSCHEMAOID 2928
 
 /*
  * Symbolic values for prokind column
diff --git a/src/test/regress/expected/single_node_type_sanity.out b/src/test/regress/expected/single_node_type_sanity.out
index 9c61b7f07..56f0c3ef7 100644
--- a/src/test/regress/expected/single_node_type_sanity.out
+++ b/src/test/regress/expected/single_node_type_sanity.out
@@ -543,3 +543,16 @@ WHERE pronargs != 2
 ----------+------------+---------
 (0 rows)
 
+-- pg_proc check--
+-- if the ouput here change, should fix the code expr_func_has_refcursor_args
+-- and func_has_refcursor_args.
+-- you should fix the code like 2925、2928
+select distinct(oid) from 
+(select prorettype as rettype, unnest(proargtypes) as argtype, oid from pg_proc) as qq
+where qq.rettype=1790 or qq.argtype=1790 order by oid;
+ oid  
+------
+ 2925
+ 2928
+(2 rows)
+
diff --git a/src/test/regress/sql/single_node_type_sanity.sql b/src/test/regress/sql/single_node_type_sanity.sql
index f9a63e036..5d1bcba05 100644
--- a/src/test/regress/sql/single_node_type_sanity.sql
+++ b/src/test/regress/sql/single_node_type_sanity.sql
@@ -386,3 +386,11 @@ FROM pg_range p1 JOIN pg_proc p ON p.oid = p1.rngsubdiff
 WHERE pronargs != 2
     OR proargtypes[0] != rngsubtype OR proargtypes[1] != rngsubtype
     OR prorettype != 'pg_catalog.float8'::regtype;
+
+-- pg_proc check--
+-- if the ouput here change, should fix the code expr_func_has_refcursor_args
+-- and func_has_refcursor_args.
+-- you should fix the code like 2925、2928
+select distinct(oid) from 
+(select prorettype as rettype, unnest(proargtypes) as argtype, oid from pg_proc) as qq
+where qq.rettype=1790 or qq.argtype=1790 order by oid;
\ No newline at end of file