diff --git a/start.sh b/start.sh
index 849d18450fc..8c681ab6640 100644
--- a/start.sh
+++ b/start.sh
@@ -1,16 +1,136 @@
 #!/bin/bash
 APP=$1
-APP=${APP:-"FullNode"}
-START_OPT=`echo ${@:2}`
-JAR_NAME="$APP.jar"
-MAX_STOP_TIME=60
+ALL_OPT=$*
+NEED_REBUILD=0
+ALL_ARR_OPT=($@)
+ALL_OPT_NUM=$#
+
+if [[ $1 == '--rewrite--manifest' ]] || [[ $1 == '--r' ]]  ; then
+   APP=''
+   NEED_REBUILD=1
+ elif [[ $2 == '--rewrite--manifest' ]] || [[ $2 == '--r' ]]  ; then
+   NEED_REBUILD=1
+fi
+
+rebuildManifest() {
+ if [[ $NEED_REBUILD == 1 ]] ; then
+   buildManifest
+ fi
+}
+
+buildManifest() {
+ ARCHIVE_JAR='ArchiveManifest.jar'
+ if [[ -f $archive_jar ]] ; then
+  java -jar $archive_jar $all_opt
+ else
+  echo 'download archivemanifest.jar'
+  download=`wget https://github.com/tronprotocol/java-tron/releases/download/greatvoyage-v4.3.0/archivemanifest.jar`
+  if [[ $download == 0 ]] ; then
+   echo 'download success, rebuild manifest'
+   java -jar $archive_jar $all_opt
+  fi
+ fi
+
+ ret=$?
+ if [[ $ret == 0 ]] ; then
+     echo 'rebuild manifest success'
+ else
+     echo 'rebuild manifest fail, log in logs/archive.log'
+ fi
+ return ret
+}
+
+checkmemory() {
+ allow_memory=8000000
+ allow_max_memory=48000000
+ max_matespace_size=' -XX:MetaspaceSize=256m -XX:MaxMetaspaceSize=512m '
+ total=`cat /proc/meminfo  |grep MemTotal |awk -F ' ' '{print $2}'`
+ default_memory=true
+
+ position=0
+ for param in $ALL_ARR_OPT
+  do
+   if [[ $param == '-mem' ]]; then
+    arr_index=$[position+1]
+    memory=${ALL_ARR_OPT[position+1]}
+    echo 'input direct memory:' $memory'MB'
+    memory=$[memory * 1000]
+    if [[ $memory =~ ^[0-9]*$ ]] && [[ $memory -gt $allow_memory ]]; then
+      allow_memory=$memory
+      default_memory=false
+    else
+     echo "direct memory must be greater than $allow_memory!, current memory: $total!!"
+    fi
+   fi
+   position=$[position+1]
+ done
+
+ if [ $default_memory == true ]; then
+  if [[ $total -lt $allow_memory ]] ; then
+     echo "direct memory must be greater than $allow_memory!, current memory: $total!!"
+     exit
+  fi
+  if [[ $total -gt $allow_memory ]] && [[ $total -lt $allow_max_memory ]] ; then
+     max_new_size=' -XX:NewSize=3072m -XX:MaxNewSize=3072m '
+     MEM_OPT="$max_matespace_size $max_new_size"
+
+  elif [[ $total -gt $allow_memory ]] ; then
+     NEW_RATIO=' -XX:NewSize=6144m -XX:MaxNewSize=6144m '
+     MEM_OPT="$max_matespace_size $new_ratio"
+  fi
+else
+  NEW_RATIO=2
+  max_matespace_size=$[allow_memory / 16]
+  MEM_OPT="$max_matespace_size $new_ratio"
+ fi
+}
+
+checkAppName() {
+ if [[ $APP =~ '-' ]]; then
+   APP=''
+ fi
+ APP=${APP:-"FullNode"}
+ START_OPT=`echo ${@:2}`
+ JAR_NAME="$APP.jar"
+ MAX_STOP_TIME=60
+ MEM_OPT=''
+}
 
 checkpid() {
  pid=`ps -ef | grep $JAR_NAME |grep -v grep | awk '{print $2}'`
  return $pid
 }
 
+checkPathAndRebuild(){
+  path='output-directory/database'
+  flag=1
+  for p in ${ALL_OPT}
+  do
+     if [[ $flag == 0 ]] ; then
+      path=`echo $p`
+      break
+     fi
+     if [[ $p == '-d' || $p == '--database-directory' ]] ; then
+      path=''
+      flag=0
+     fi
+  done
+
+  if [[ -z "${path}" ]]; then
+     echo '-d /path or --database-directory /path'
+     exit -1
+  fi
+
+  if [[ -d ${path} ]]; then
+    rebuildManifest
+  else
+    echo $path 'not exist'
+    exit -1
+  fi
+}
+
 stopService() {
+  checkAppName
   count=1
   while [ $count -le $MAX_STOP_TIME ]; do
     checkpid
@@ -30,17 +150,23 @@ stopService() {
 }
 
 startService() {
+ checkmemory
+
  echo `date` >> start.log
  total=`cat /proc/meminfo  |grep MemTotal |awk -F ' ' '{print $2}'`
- xmx=`echo "$total/1024/1024*0.8" | bc |awk -F. '{print $1"g"}'`
+ xmx=`echo "$total/1024/1024*0.6" | bc |awk -F. '{print $1"g"}'`
+ directmem=`echo "$total/1024/1024*0.1" | bc |awk -F. '{print $1"g"}'`
  logtime=`date +%Y-%m-%d_%H-%M-%S`
- nohup java -Xmx$xmx -XX:+UseConcMarkSweepGC -XX:+PrintGCDetails -Xloggc:./gc.log\
- -XX:+PrintGCDateStamps -XX:+CMSParallelRemarkEnabled -XX:ReservedCodeCacheSize=256m\
- -XX:+CMSScavengeBeforeRemark -jar $JAR_NAME $START_OPT -c config.conf  >> start.log 2>&1 &
-
+ export LD_PRELOAD="/usr/lib64/libtcmalloc.so"
+ export TCMALLOC_RELEASE_RATE=10
+ nohup java -Xms$xmx -Xmx$xmx -XX:+UseConcMarkSweepGC -XX:+PrintGCDetails -Xloggc:./gc.log\
+  -XX:+PrintGCDateStamps -XX:+CMSParallelRemarkEnabled -XX:ReservedCodeCacheSize=256m -XX:+UseCodeCacheFlushing\
+  $MEM_OPT -XX:MaxDirectMemorySize=$directmem -XX:+HeapDumpOnOutOfMemoryError -jar $JAR_NAME $START_OPT -c config.conf  >> start.log 2>&1 &
  pid=`ps -ef |grep $JAR_NAME |grep -v grep |awk '{print $2}'`
  echo "start java-tron with pid $pid on $HOSTNAME"
 }
 
 stopService
-startService
+checkPathAndRebuild
+sleep 5
+startService
\ No newline at end of file