diff --git a/src/client/src/tscSystem.c b/src/client/src/tscSystem.c
index 1f544176865ed7f1852c3ef65ad7af41e8237696..2b6634fece5ac1dd34abeeb3e37f734f69a4d753 100644
--- a/src/client/src/tscSystem.c
+++ b/src/client/src/tscSystem.c
@@ -87,7 +87,7 @@ int32_t tscAcquireRpc(const char *key, const char *user, const char *secretEncry
   rpcInit.sessions = tsMaxConnections;
   rpcInit.connType = TAOS_CONN_CLIENT;
   rpcInit.user = (char *)user;
-  rpcInit.idleTime = tsShellActivityTimer * 1000; 
+  rpcInit.idleTime = 2 * 1000; 
   rpcInit.ckey = "key"; 
   rpcInit.spi = 1; 
   rpcInit.secret = (char *)secretEncrypt;