diff --git a/scripts/light_monitor.sh b/scripts/light_monitor.sh
new file mode 100755
index 000000000..15d398196
--- /dev/null
+++ b/scripts/light_monitor.sh
@@ -0,0 +1,129 @@
+#!/bin/bash
+dirPath="$(cd "$(dirname "$0")" && pwd)"
+cd "${dirPath}" || exit 1
+
+# rpc ip
+rpc_ip=""
+# rpc 端口
+rpc_port=""
+#
+disk_dir="."
+
+# 磁盘容量告警阈值，默认剩余5%开始告警
+disk_space_threshold=95
+memory_free_threshold=5
+
+alarm() {
+  echo "$1"
+  alert_msg="$1"
+  alert_ip=$(/sbin/ifconfig eth0 | grep inet | grep -v inet6 | awk '{print $2}')
+  alert_time=$(date "+%Y-%m-%d %H:%M:%S")
+
+  # TODO: alarm the message, mail or phone
+
+   echo "[${alert_time}]:[${alert_ip}]:${alert_msg}"
+#   | mail -s "fisco-bcos alarm message" 123456@me.com
+}
+
+# echo message with time
+info() {
+  time=$(date "+%Y-%m-%d %H:%M:%S")
+  echo "[$time] $1"
+}
+
+error() {
+  echo -e "\033[31m $1 \033[0m"
+}
+
+dir_must_exists() {
+  if [ ! -d "$1" ]; then
+    error "$1 DIR does not exist, please check!"
+    exit 1
+  fi
+}
+
+function check_disk() {
+  local dir="$1"
+  local disk_space_usage_percent
+  disk_space_usage_percent=$(df -h "${dir}" | grep /dev | awk -F" " '{print $5}' | cut -d"%" -f1)
+  # info "disk_space_left_percent: ${disk_space_left_percent}, disk_space_threshold:${disk_space_threshold}"
+  if [[ ${disk_space_threshold} -lt ${disk_space_usage_percent} ]]; then
+    alarm " ERROR! insufficient disk capacity, monitor disk directory: ${dir}, used disk space percent: ${disk_space_usage_percent}%"
+    return 1
+  fi
+}
+
+# check memory
+function check_memory() {
+  local memory_free
+  memory_free=$(free -g | grep Mem | awk '{print $4}')
+  if [[ ${memory_free_threshold} -gt ${memory_free} ]]; then
+    alarm " ERROR! insufficient memory, free memory: ${memory_free}G"
+    return 1
+  fi
+}
+
+# check if nodeX is work well
+function check_router_work_properly() {
+  local config_ip="${1}"
+  local config_port="${2}"
+
+  local testResult
+  testResult=$(curl -s "http://$config_ip:$config_port/sys/test" -X GET)
+  [[ -z "$testResult" ]] && {
+    alarm " ERROR! Cannot connect to $config_ip:$config_port, method: sys/test"
+    return 1
+  }
+}
+
+function help() {
+  echo "Usage:"
+  echo "Optional:"
+  echo "    -d                  [Optional]  disk directory to be monitor"
+  echo "    -i                  [Require]  rpc server ip"
+  echo "    -p                  [Require]  rpc server port"
+  echo "    -T                  [Optional] disk capacity alarm threshold, default: 5%"
+  echo "    -f                  [Optional] memory free alarm threshold, default: 5G"
+  echo "    -h                  Help."
+  echo "Example:"
+  echo "    bash light_monitor.sh -i 127.0.0.1 -p 8250"
+  echo "    bash light_monitor.sh -i 127.0.0.1 -p 8250 -d /data -T 10"
+  exit 0
+}
+
+function params_must_set() {
+  local name="$1"
+  local params="$2"
+  local flag="$3"
+  [[ -z "${params}" ]] && {
+    error "${name} must be set, you can use \'${flag}\' option to set it"
+    exit 1
+  }
+}
+
+while getopts "d:i:p:T:f:h" option; do
+  case $option in
+  d)
+    disk_dir=$OPTARG
+    dir_must_exists ${disk_dir}
+    ;;
+  i) rpc_ip=$OPTARG ;;
+  p) rpc_port=$OPTARG ;;
+  T) disk_space_threshold=$OPTARG ;;
+  f) memory_free_threshold=$OPTARG ;;
+  h) help ;;
+  *) help ;;
+  esac
+done
+
+params_must_set "rpc ip" "${rpc_ip}" "-i"
+params_must_set "rpc port" "${rpc_port}" "-p"
+
+# 磁盘容量检查
+if [ -n "${disk_dir}" ]; then
+  check_disk "${disk_dir}"
+fi
+
+check_memory
+
+check_router_work_properly "${rpc_ip}" "${rpc_port}"
diff --git a/src/main/java/com/webank/wecross/restserver/response/CompleteTransactionResponse.java b/src/main/java/com/webank/wecross/restserver/response/CompleteTransactionResponse.java
index 52d8363c6..634778f4d 100644
--- a/src/main/java/com/webank/wecross/restserver/response/CompleteTransactionResponse.java
+++ b/src/main/java/com/webank/wecross/restserver/response/CompleteTransactionResponse.java
@@ -163,10 +163,6 @@ public String toString() {
                 + Arrays.toString(result)
                 + ", byProxy="
                 + byProxy
-                + ", txBytes="
-                + Arrays.toString(txBytes)
-                + ", receiptBytes="
-                + Arrays.toString(receiptBytes)
                 + ", errorCode="
                 + errorCode
                 + ", message='"
diff --git a/src/main/java/com/webank/wecross/stub/Transaction.java b/src/main/java/com/webank/wecross/stub/Transaction.java
index 77e6e3637..238805951 100644
--- a/src/main/java/com/webank/wecross/stub/Transaction.java
+++ b/src/main/java/com/webank/wecross/stub/Transaction.java
@@ -1,7 +1,5 @@
 package com.webank.wecross.stub;
 
-import java.util.Arrays;
-
 public class Transaction {
     private byte[] txBytes; // raw transaction info
     private byte[] receiptBytes; // raw transaction receipt info
@@ -81,11 +79,7 @@ public void setTransactionByProxy(boolean transactionByProxy) {
     @Override
     public String toString() {
         return "Transaction{"
-                + "txBytes="
-                + Arrays.toString(txBytes)
-                + ", receiptBytes="
-                + Arrays.toString(receiptBytes)
-                + ", accountIdentity='"
+                + "accountIdentity='"
                 + accountIdentity
                 + '\''
                 + ", resource='"