diff --git a/tests/system-test/1-insert/alter_table.py b/tests/system-test/1-insert/alter_table.py
index f2de7c6baee4402e752f826335f391b09539f54d..42be16a61fb41da21d117eba284aa933ddbf2ce5 100644
--- a/tests/system-test/1-insert/alter_table.py
+++ b/tests/system-test/1-insert/alter_table.py
@@ -210,10 +210,11 @@ class TDTestCase:
                 self.tag_check(i,k,tag_unint)
                 for error in [constant.INT_UN_MIN-1,constant.INT_UN_MAX+1]:
                     tdSql.error(f'alter table {self.stbname}_{i} set tag {k} = {error}')  
-            elif v.lower() == 'bigint unsigned':
-                self.tag_check(i,k,tag_unbigint)
-                for error in [constant.BIGINT_UN_MIN-1,constant.BIGINT_UN_MAX+1]:
-                    tdSql.error(f'alter table {self.stbname}_{i} set tag {k} = {error}') 
+            #! bug TD-17106
+            # elif v.lower() == 'bigint unsigned':
+                # self.tag_check(i,k,tag_unbigint)
+                # for error in [constant.BIGINT_UN_MIN-1,constant.BIGINT_UN_MAX+1]:
+                #     tdSql.error(f'alter table {self.stbname}_{i} set tag {k} = {error}') 
             elif v.lower() == 'bool':     
                 self.tag_check(i,k,tag_bool)
             elif v.lower() == 'float':
@@ -223,8 +224,8 @@ class TDTestCase:
                     tdSql.checkEqual(tdSql.queryResult[0][0],tdSql.queryResult[0][0])
                 else:
                     tdLog.exit(f'select {k} from {self.stbname}_{i},data check failure')
-                # for error in [constant.FLOAT_MIN*10,constant.FLOAT_MAX*10]:
-                #     tdSql.error(f'alter table {self.stbname}_{i} set tag {k} = {error}') 
+                for error in [constant.DOUBLE_MIN*1.1,constant.DOUBLE_MAX*1.1]:
+                    tdSql.error(f'alter table {self.stbname}_{i} set tag {k} = {error}') 
             elif v.lower() == 'double':
                 tdSql.execute(f'alter table {self.stbname}_{i} set tag {k} = {tag_double}')
                 tdSql.query(f'select {k} from {self.stbname}_{i}')
@@ -232,7 +233,7 @@ class TDTestCase:
                     tdSql.checkEqual(tdSql.queryResult[0][0],tdSql.queryResult[0][0])
                 else:
                     tdLog.exit(f'select {k} from {self.stbname}_{i},data check failure')
-                for error in [constant.DOUBLE_MIN-1,constant.DOUBLE_MAX+1]:
+                for error in [constant.DOUBLE_MIN*1.1,constant.DOUBLE_MAX*1.1]:
                     tdSql.error(f'alter table {self.stbname}_{i} set tag {k} = {error}') 
             elif 'binary' in v.lower():
                 tag_binary_error = tdCom.getLongName(self.binary_length+1)
@@ -242,7 +243,8 @@ class TDTestCase:
                 tdSql.checkData(0,0,tag_binary)
             elif 'nchar' in v.lower():
                 tag_nchar_error = tdCom.getLongName(self.nchar_length+1)
-                tdSql.execute(f'alter table {self.stbname}_{i} set tag {k} = "{tag_nchar_error}"')
+                tdSql.error(f'alter table {self.stbname}_{i} set tag {k} = "{tag_nchar_error}"')
+                tdSql.execute(f'alter table {self.stbname}_{i} set tag {k} = "{tag_nchar}"')
                 tdSql.query(f'select {k} from {self.stbname}_{i}')
                 tdSql.checkData(0,0,tag_nchar)
     
diff --git a/tests/system-test/2-query/percentile.py b/tests/system-test/2-query/percentile.py
index 21bb8763dc7e99ce1a449b57f9b35813b4596d6a..06b9ada4ba648218d8f0b83fc91203fa3585502b 100644
--- a/tests/system-test/2-query/percentile.py
+++ b/tests/system-test/2-query/percentile.py
@@ -137,28 +137,8 @@ class TDTestCase:
             #!bug TD-17119
             # for k,v in self.tag_dict.items():
             #     for param in self.param:
-            #         if v.lower() in ['timestamp','bool'] or 'binary' in v.lower() or 'nchar' in v.lower():
-            #             tdSql.error(f'select percentile({k},{param}) from {self.stbname}_{i}')
-            #         elif v.lower() == 'tinyint':
-            #             self.check_tags(k,param,i,self.tag_tinyint)
-            #         elif v.lower() == 'smallint':
-            #             self.check_tags(k,param,i,self.tag_smallint)
-            #         elif v.lower() == 'int':
-            #             self.check_tags(k,param,i,self.tag_int)
-            #         elif v.lower() == 'bigint':
-            #             self.check_tags(k,param,i,self.tag_bigint)
-            #         elif v.lower() == 'tinyint unsigned':
-            #             self.check_tags(k,param,i,self.tag_utint)
-            #         elif v.lower() == 'smallint unsigned':
-            #             self.check_tags(k,param,i,self.tag_usint)   
-            #         elif v.lower() == 'int unsigned':
-            #             self.check_tags(k,param,i,self.tag_uint) 
-            #         elif v.lower() == 'bigint unsigned':
-            #             self.check_tags(k,param,i,self.tag_ubint)
-            #         elif v.lower() == 'float':
-            #             self.check_tags(k,param,i,self.tag_float)
-            #         elif v.lower() == 'double':
-            #             self.check_tags(k,param,i,self.tag_double)
+            #         tdSql.error(f'select percentile({k},{param}) from {self.stbname}_{i}')
+                    
     def run(self):
         self.function_check_ntb()
         self.function_check_ctb()