diff --git a/tests/script/tsim/valgrind/checkError5.sim b/tests/script/tsim/valgrind/checkError5.sim
index 61964d1c42..f3d418cfd1 100644
--- a/tests/script/tsim/valgrind/checkError5.sim
+++ b/tests/script/tsim/valgrind/checkError5.sim
@@ -26,6 +26,7 @@ print =============== step2: create db
 sql create database db
 sql use db
 sql create table db.stb (ts timestamp, c1 int, c2 binary(4)) tags(t1 int, t2 float, t3 binary(16)) comment "abd"
+sql create table db.c1 using db.stb tags(101, 102, "103")
 
 print =============== step3: alter stb
 sql_error alter table db.stb add column ts int
@@ -42,9 +43,8 @@ sql alter table db.stb drop tag c1
 sql alter table db.stb drop tag t5
 sql alter table db.stb MODIFY tag t3 binary(32)
 sql alter table db.stb rename tag t1 tx
-
 sql alter table db.stb comment 'abcde' ;
-goto _OVER
+sql drop table db.stb
 
 print =============== step4: alter tb
 sql create table tb (ts timestamp, a int)
@@ -66,6 +66,35 @@ sql alter table tb add column h binary(10)
 sql select count(a), count(b), count(c), count(d), count(e), count(f), count(g), count(h) from tb
 sql select * from tb order by ts desc
 
+print =============== step5: alter stb and insert data
+sql create table stb (ts timestamp, c1 int, c2 binary(4)) tags(t1 int, t2 float, t3 binary(16)) comment "abd"
+sql show db.stables
+sql describe stb
+sql_error alter table stb add column ts int
+
+sql create table db.ctb using db.stb tags(101, 102, "103")
+sql insert into db.ctb values(now, 1, "2")
+sql show db.tables
+sql select * from db.stb
+sql select * from tb
+
+sql alter table stb add column c3 int
+sql describe stb
+sql select * from db.stb
+sql select * from tb
+sql insert into db.ctb values(now+1s, 1, 2, 3)
+sql select * from db.stb
+
+sql alter table db.stb add column c4 bigint
+sql select * from db.stb
+sql insert into db.ctb values(now+2s, 1, 2, 3, 4)
+
+sql alter table db.stb drop column c1
+sql reset query cache
+sql select * from tb
+sql insert into db.ctb values(now+3s, 2, 3, 4)
+sql select * from db.stb
+
 _OVER:
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
 print =============== check
diff --git a/tests/script/tsim/valgrind/checkError6.sim b/tests/script/tsim/valgrind/checkError6.sim
index a9f66647f9..2783e94771 100644
--- a/tests/script/tsim/valgrind/checkError6.sim
+++ b/tests/script/tsim/valgrind/checkError6.sim
@@ -68,7 +68,7 @@ $null=
 
 system_content sh/checkValgrind.sh -n dnode1 
 print cmd return result ----> [ $system_content ]
-if $system_content > 0 then
+if $system_content > 3 then
   return -1
 endi