diff --git a/TestON/tests/RCOnosPerf4nodes/RCOnosPerf4nodes.py b/TestON/tests/RCOnosPerf4nodes/RCOnosPerf4nodes.py
index 11ea4f6..f8fc498 100644
--- a/TestON/tests/RCOnosPerf4nodes/RCOnosPerf4nodes.py
+++ b/TestON/tests/RCOnosPerf4nodes/RCOnosPerf4nodes.py
@@ -16,6 +16,16 @@
         main.ONOS2.stop()
         main.ONOS3.stop()
         main.ONOS4.stop()
+        main.RamCloud1.stop_coor()
+        main.RamCloud1.stop_serv()
+        main.RamCloud2.stop_serv()
+        main.RamCloud3.stop_serv()
+        main.RamCloud4.stop_serv()
+        main.ONOS1.handle.sendline("~/ONOS/onos.sh rc deldb")
+        main.ONOS2.handle.sendline("~/ONOS/onos.sh rc deldb")
+        main.ONOS3.handle.sendline("~/ONOS/onos.sh rc deldb")
+        main.ONOS4.handle.sendline("~/ONOS/onos.sh rc deldb")
+        time.sleep(10)
         main.RamCloud1.start_coor()
         main.RamCloud1.start_serv()
         main.RamCloud2.start_serv()