diff --git a/src/gausskernel/cbb/extension/foreign/foreign.cpp b/src/gausskernel/cbb/extension/foreign/foreign.cpp
index cfa8fd69d19012cec79855463f14adbd2bf9e90c..79f16f618ecd2f0fdc6d68d84b63c8d6266fff12 100644
--- a/src/gausskernel/cbb/extension/foreign/foreign.cpp
+++ b/src/gausskernel/cbb/extension/foreign/foreign.cpp
@@ -524,8 +524,7 @@ FdwRoutine* GetFdwRoutineByServerId(Oid serverid)
     /* Get foreign-data wrapper OID for the server. */
     tp = SearchSysCache1(FOREIGNSERVEROID, ObjectIdGetDatum(serverid));
     if (!HeapTupleIsValid(tp))
-        ereport(ERROR, (errcode(ERRCODE_UNDEFINED_OBJECT),
-                errmsg("cache lookup failed for foreign server %u", serverid)));
+        return NULL;
     serverform = (Form_pg_foreign_server) GETSTRUCT(tp);
     fdwid = serverform->srvfdw;
     ReleaseSysCache(tp);
diff --git a/src/gausskernel/optimizer/commands/tablecmds.cpp b/src/gausskernel/optimizer/commands/tablecmds.cpp
index a285b4b0898c4080a7f9427dda7892a7f4e1d470..445a433bd141797e3496d342841ea06ba0b19da6 100644
--- a/src/gausskernel/optimizer/commands/tablecmds.cpp
+++ b/src/gausskernel/optimizer/commands/tablecmds.cpp
@@ -1803,13 +1803,6 @@ Oid DefineRelation(CreateStmt* stmt, char relkind, Oid ownerId)
         if (colDef->raw_default != NULL) {
             RawColumnDefault* rawEnt = NULL;
 
-            if (relkind == RELKIND_FOREIGN_TABLE) {
-                if (!(IsA(stmt, CreateForeignTableStmt) &&
-                        isMOTTableFromSrvName(((CreateForeignTableStmt*)stmt)->servername)))
-                    ereport(ERROR, (errcode(ERRCODE_WRONG_OBJECT_TYPE),
-                            errmsg("default values on foreign tables are not supported")));
-            }
-
             Assert(colDef->cooked_default == NULL);
             rawEnt = (RawColumnDefault*)palloc(sizeof(RawColumnDefault));
             rawEnt->attnum = attnum;
diff --git a/src/gausskernel/process/tcop/utility.cpp b/src/gausskernel/process/tcop/utility.cpp
index 9bff438869b358cb3da096c39d85ce66da311175..ed3bbd01a20158230d8f946bfe96bfecc2141de3 100755
--- a/src/gausskernel/process/tcop/utility.cpp
+++ b/src/gausskernel/process/tcop/utility.cpp
@@ -3586,9 +3586,6 @@ void standard_ProcessUtility(Node* parse_tree, const char* query_string, ParamLi
         } break;
 
         case T_AlterDomainStmt:
-#ifdef PGXC
-            ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("domain is not yet supported.")));
-#endif /* PGXC */
             {
                 AlterDomainStmt* stmt = (AlterDomainStmt*)parse_tree;
 
@@ -4240,10 +4237,6 @@ void standard_ProcessUtility(Node* parse_tree, const char* query_string, ParamLi
         } break;
 
         case T_RuleStmt: /* CREATE RULE */
-#ifdef PGXC
-            if (!IsInitdb && !u_sess->attr.attr_sql.enable_cluster_resize && !u_sess->exec_cxt.extension_is_valid)
-                ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("RULE is not yet supported.")));
-#endif /* PGXC */
             DefineRule((RuleStmt*)parse_tree, query_string);
 #ifdef PGXC
             if (IS_PGXC_COORDINATOR && !IsConnFromCoord()) {
@@ -4927,10 +4920,6 @@ void standard_ProcessUtility(Node* parse_tree, const char* query_string, ParamLi
              * ******************************** DOMAIN statements ****
              */
         case T_CreateDomainStmt:
-#ifdef PGXC
-            if (!IsInitdb && !u_sess->attr.attr_common.IsInplaceUpgrade)
-                ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("domain is not yet supported.")));
-#endif /* PGXC */
             DefineDomain((CreateDomainStmt*)parse_tree);
 #ifdef PGXC
             if (IS_PGXC_COORDINATOR)
@@ -8531,9 +8520,6 @@ void CheckObjectInBlackList(ObjectType obj_type, const char* query_string)
                 return;
             else
                 break;
-        case OBJECT_AGGREGATE:
-            tag = "AGGREGATE";
-            break;
         case OBJECT_OPERATOR:
             tag = "OPERATOR";
             break;
@@ -8596,28 +8582,6 @@ void CheckObjectInBlackList(ObjectType obj_type, const char* query_string)
  */
 bool CheckExtensionInWhiteList(const char* extension_name, uint32 hash_value, bool hash_check)
 {
-    /* 2902411162 hash for fastcheck, the sql file is much shorter than published version. */
-    uint32 postgisHashHistory[POSTGIS_VERSION_NUM] = {2902411162, 2959454932};
-
-    /* check for extension name */
-    if (pg_strcasecmp(extension_name, "postgis") == 0) {
-        /* PostGIS is disabled under 300 deployment */
-        if (is_feature_disabled(POSTGIS_DOCKING)) {
-            return false;
-        }
-
-        if (hash_check && !isSecurityMode) {
-            /* check for postgis hashvalue */
-            for (int i = 0; i < POSTGIS_VERSION_NUM; i++) {
-                if (hash_value == postgisHashHistory[i]) {
-                    return true;
-                }         
-            }
-        } else {
-            return true;
-        }
-    }
-
     return true;
 }