diff --git a/tests/script/tsim/valgrind/checkError3.sim b/tests/script/tsim/valgrind/checkError3.sim
index 6fa7e393351b9378427e27f9695704ec8ad72006..8691a8890e2ce24cc2842bf362c580ce2f522687 100644
--- a/tests/script/tsim/valgrind/checkError3.sim
+++ b/tests/script/tsim/valgrind/checkError3.sim
@@ -62,7 +62,14 @@ system sh/exec.sh -n dnode1 -s stop -x SIGINT
 system sh/exec.sh -n dnode1 -s start -v
 
 print =============== stepa: query data
-sql select * from c1
+steps: 
+	$x = $x + 1
+	sleep 1000
+	if $x == 20 then
+		return -1
+	endi
+sql select * from c1 -x steps
+
 sql select * from stb
 sql select * from stb_1
 sql select ts, c1, c2, c3 from c1
diff --git a/tests/script/tsim/valgrind/checkError6.sim b/tests/script/tsim/valgrind/checkError6.sim
index 11a387ed4dffd7258120154adb9d7874ee0b21b5..cac398a525b83ab6d611226b9a0a3935e2cea5bc 100644
--- a/tests/script/tsim/valgrind/checkError6.sim
+++ b/tests/script/tsim/valgrind/checkError6.sim
@@ -158,9 +158,14 @@ print =============== restart
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
 system sh/exec.sh -n dnode1 -s start -v
 
-sleep 1000
+steps: 
+	$x = $x + 1
+	sleep 1000
+	if $x == 20 then
+		return -1
+	endi
+sql select avg(tbcol) as c from stb -x steps
 
-sql select avg(tbcol) as c from stb
 sql select avg(tbcol) as c from stb where ts <= 1601481840000
 sql select avg(tbcol) as c from stb where tgcol < 5 and ts <= 1601481840000
 sql select avg(tbcol) as c from stb interval(1m)