diff --git a/README.md b/README.md
index 41629d6df392ec069d6a0660f82ac9d0cb815170..2d84389f78365025bbb579497ba87956bf24313e 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 [![Build Status](https://travis-ci.org/taosdata/TDengine.svg?branch=master)](https://travis-ci.org/taosdata/TDengine)
 [![Build status](https://ci.appveyor.com/api/projects/status/kf3pwh2or5afsgl9/branch/master?svg=true)](https://ci.appveyor.com/project/sangshuduo/tdengine-2n8ge/branch/master)
 [![Coverage Status](https://coveralls.io/repos/github/taosdata/TDengine/badge.svg?branch=develop)](https://coveralls.io/github/taosdata/TDengine?branch=develop)
+[![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/4201/badge)](https://bestpractices.coreinfrastructure.org/projects/4201)
 
 [![TDengine](TDenginelogo.png)](https://www.taosdata.com)
 
diff --git a/packaging/release.sh b/packaging/release.sh
index 7a585431a2cc5e85d8670b8824b782d9f6b6eb91..2302b4587587ca43d9ebfb0d63364f4ae86cff0e 100755
--- a/packaging/release.sh
+++ b/packaging/release.sh
@@ -10,6 +10,7 @@ set -e
 #             -o [Linux | Kylin | Alpine | Raspberrypi | Darwin | Windows | ...]  
 #             -V [stable | beta]
 #             -l [full | lite]
+#             -n [2.0.0.3]
 
 # set parameters by default value
 verMode=edge     # [cluster, edge]
@@ -17,8 +18,9 @@ verType=stable   # [stable, beta]
 cpuType=x64      # [aarch32 | aarch64 | x64 | x86 | mips64 ...]
 osType=Linux     # [Linux | Kylin | Alpine | Raspberrypi | Darwin | Windows | ...]
 pagMode=full     # [full | lite]
+verNumber=""
 
-while getopts "hv:V:c:o:l:" arg
+while getopts "hv:V:c:o:l:n:" arg
 do
   case $arg in
     v)
@@ -37,12 +39,21 @@ do
       #echo "pagMode=$OPTARG"
       pagMode=$(echo $OPTARG)
       ;;
+    n)
+      #echo "verNumber=$OPTARG"
+      verNumber=$(echo $OPTARG)
+      ;;
     o)
       #echo "osType=$OPTARG"
       osType=$(echo $OPTARG)
       ;;
     h)
-      echo "Usage: `basename $0` -v [cluster | edge]  -c [aarch32 | aarch64 | x64 | x86 | mips64 ...] -o [Linux | Kylin | Alpine | Raspberrypi | Darwin | Windows | ...]  -V [stable | beta] -l [full | lite]"
+      echo "Usage: `basename $0` -v [cluster | edge] "
+      echo "                  -c [aarch32 | aarch64 | x64 | x86 | mips64 ...] "
+      echo "                  -o [Linux | Kylin | Alpine | Raspberrypi | Darwin | Windows | ...] "
+      echo "                  -V [stable | beta] "
+      echo "                  -l [full | lite] "
+      echo "                  -n [version number] "
       exit 0
       ;;
     ?) #unknow option 
@@ -52,7 +63,7 @@ do
   esac
 done
 
-echo "verMode=${verMode} verType=${verType} cpuType=${cpuType} osType=${osType} pagMode=${pagMode}"
+echo "verMode=${verMode} verType=${verType} cpuType=${cpuType} osType=${osType} pagMode=${pagMode} verNumber=${verNumber}"
 
 curr_dir=$(pwd)
 
@@ -80,7 +91,6 @@ function is_valid_version() {
     if [[ $1 =~ $rx ]]; then
         return 0
     fi
-
     return 1
 }
 
@@ -89,26 +99,25 @@ function vercomp () {
         echo 0
         exit 0
     fi
+    
     local IFS=.
     local i ver1=($1) ver2=($2)
+
     # fill empty fields in ver1 with zeros
     for ((i=${#ver1[@]}; i<${#ver2[@]}; i++)); do
         ver1[i]=0
     done
 
     for ((i=0; i<${#ver1[@]}; i++)); do
-        if [[ -z ${ver2[i]} ]]
-        then
+        if [[ -z ${ver2[i]} ]]; then
             # fill empty fields in ver2 with zeros
             ver2[i]=0
         fi
-        if ((10#${ver1[i]} > 10#${ver2[i]}))
-        then
+        if ((10#${ver1[i]} > 10#${ver2[i]})); then
             echo 1
             exit 0
         fi
-        if ((10#${ver1[i]} < 10#${ver2[i]}))
-        then
+        if ((10#${ver1[i]} < 10#${ver2[i]})); then
             echo 2
             exit 0
         fi
@@ -120,10 +129,11 @@ function vercomp () {
 version=$(cat ${versioninfo} | grep " version" | cut -d '"' -f2)
 compatible_version=$(cat ${versioninfo} | grep " compatible_version" | cut -d '"' -f2)
 
-while true; do
-  read -p "Do you want to release a new version? [y/N]: " is_version_change
+if [ -z ${verNumber} ]; then
+  while true; do
+    read -p "Do you want to release a new version? [y/N]: " is_version_change
 
-  if [[ ( "${is_version_change}" == "y") || ( "${is_version_change}" == "Y") ]]; then
+    if [[ ( "${is_version_change}" == "y") || ( "${is_version_change}" == "Y") ]]; then
       read -p "Please enter the new version: " tversion
       while true; do
           if (! is_valid_version $tversion) || [ "$(vercomp $tversion $version)" = '2' ]; then
@@ -152,13 +162,24 @@ while true; do
       done
 
       break
-  elif [[ ( "${is_version_change}" == "n") || ( "${is_version_change}" == "N") ]]; then
+    elif [[ ( "${is_version_change}" == "n") || ( "${is_version_change}" == "N") ]]; then
       echo "Use old version: ${version} compatible version: ${compatible_version}."
       break
-  else
+    else
       continue
-  fi
-done
+    fi
+  done
+else 
+  echo "old version: $version, new version: $verNumber"
+  #if ( ! is_valid_version $verNumber ) || [[ "$(vercomp $version $verNumber)" == '2' ]]; then
+  #  echo "please enter correct version"
+  #  exit 0
+  #else
+    version=${verNumber}
+  #fi  
+fi  
+
+echo "=======================new version number: ${version}======================================"
 
 # output the version info to the buildinfo file.
 build_time=$(date +"%F %R")
diff --git a/packaging/tools/install.sh b/packaging/tools/install.sh
index 0700ed46828674ac0eda71643c65f4b4b462f2cb..f27595a3566dee7fc3df53a0925f68cc9ab9721d 100644
--- a/packaging/tools/install.sh
+++ b/packaging/tools/install.sh
@@ -168,6 +168,7 @@ function install_bin() {
     ${csudo} rm -f ${bin_link_dir}/taosdemo || :
     ${csudo} rm -f ${bin_link_dir}/rmtaos   || :
     ${csudo} rm -f ${bin_link_dir}/tarbitrator   || :
+    ${csudo} rm -f ${bin_link_dir}/set_core   || :
 
     ${csudo} cp -r ${script_dir}/bin/* ${install_main_dir}/bin && ${csudo} chmod 0555 ${install_main_dir}/bin/*
 
@@ -176,6 +177,7 @@ function install_bin() {
     [ -x ${install_main_dir}/bin/taosd ] && ${csudo} ln -s ${install_main_dir}/bin/taosd ${bin_link_dir}/taosd                   || :
     [ -x ${install_main_dir}/bin/taosdemo ] && ${csudo} ln -s ${install_main_dir}/bin/taosdemo ${bin_link_dir}/taosdemo          || :
     [ -x ${install_main_dir}/bin/remove.sh ] && ${csudo} ln -s ${install_main_dir}/bin/remove.sh ${bin_link_dir}/rmtaos          || :
+    [ -x ${install_main_dir}/bin/set_core.sh ] && ${csudo} ln -s ${install_main_dir}/bin/set_core.sh ${bin_link_dir}/set_core    || :
     [ -x ${install_main_dir}/bin/tarbitrator ] && ${csudo} ln -s ${install_main_dir}/bin/tarbitrator ${bin_link_dir}/tarbitrator || :
 
     if [ "$verMode" == "cluster" ]; then
@@ -196,8 +198,10 @@ function install_lib() {
     ${csudo} ln -s ${install_main_dir}/driver/libtaos.* ${lib_link_dir}/libtaos.so.1
     ${csudo} ln -s ${lib_link_dir}/libtaos.so.1 ${lib_link_dir}/libtaos.so
     
-    ${csudo} ln -s ${install_main_dir}/driver/libtaos.* ${lib64_link_dir}/libtaos.so.1       || :
-    ${csudo} ln -s ${lib64_link_dir}/libtaos.so.1 ${lib64_link_dir}/libtaos.so               || :
+    if [ -d ${lib64_link_dir} ]; then
+      ${csudo} ln -s ${install_main_dir}/driver/libtaos.* ${lib64_link_dir}/libtaos.so.1       || :
+      ${csudo} ln -s ${lib64_link_dir}/libtaos.so.1 ${lib64_link_dir}/libtaos.so               || :
+    fi
         
 	  #if [ "$verMode" == "cluster" ]; then
     #    # Compatible with version 1.5
@@ -205,6 +209,8 @@ function install_lib() {
     #    ${csudo} ln -s ${install_main_dir}/connector/taos-jdbcdriver-1.0.2-dist.jar ${v15_java_app_dir}/JDBCDriver-1.0.2-dist.jar
     #    ${csudo} chmod 777 ${v15_java_app_dir} || :
     #fi
+    
+    ${csudo} ldconfig
 }
 
 function install_header() {
diff --git a/packaging/tools/install_client.sh b/packaging/tools/install_client.sh
index 0ec8dbd0cce46cd6861ef4f93b4b180df949a65f..6a1b7be191b626f59ab61510a6c2b701b85bca9e 100755
--- a/packaging/tools/install_client.sh
+++ b/packaging/tools/install_client.sh
@@ -88,6 +88,7 @@ function install_bin() {
       ${csudo} rm -f ${bin_link_dir}/taosdump || :
   fi
   ${csudo} rm -f ${bin_link_dir}/rmtaos       || :
+  ${csudo} rm -f ${bin_link_dir}/set_core     || :
 
   ${csudo} cp -r ${script_dir}/bin/* ${install_main_dir}/bin && ${csudo} chmod 0555 ${install_main_dir}/bin/*
 
@@ -97,6 +98,7 @@ function install_bin() {
       [ -x ${install_main_dir}/bin/taosdump ] && ${csudo} ln -s ${install_main_dir}/bin/taosdump ${bin_link_dir}/taosdump || :
   fi
   [ -x ${install_main_dir}/bin/remove_client.sh ] && ${csudo} ln -s ${install_main_dir}/bin/remove_client.sh ${bin_link_dir}/rmtaos || :
+  [ -x ${install_main_dir}/bin/set_core.sh ] && ${csudo} ln -s ${install_main_dir}/bin/set_core.sh ${bin_link_dir}/set_core || :
 }
 
 function clean_lib() {
@@ -115,12 +117,17 @@ function install_lib() {
     if [ "$osType" != "Darwin" ]; then
         ${csudo} ln -s ${install_main_dir}/driver/libtaos.* ${lib_link_dir}/libtaos.so.1
         ${csudo} ln -s ${lib_link_dir}/libtaos.so.1 ${lib_link_dir}/libtaos.so
-        ${csudo} ln -s ${install_main_dir}/driver/libtaos.* ${lib64_link_dir}/libtaos.so.1       || :
-        ${csudo} ln -s ${lib64_link_dir}/libtaos.so.1 ${lib64_link_dir}/libtaos.so               || :
+        
+        if [ -d "${lib64_link_dir}" ]; then
+	        ${csudo} ln -s ${install_main_dir}/driver/libtaos.* ${lib64_link_dir}/libtaos.so.1       || :
+	        ${csudo} ln -s ${lib64_link_dir}/libtaos.so.1 ${lib64_link_dir}/libtaos.so               || :
+	      fi
     else
         ${csudo} ln -s ${install_main_dir}/driver/libtaos.* ${lib_link_dir}/libtaos.1.dylib
         ${csudo} ln -s ${lib_link_dir}/libtaos.1.dylib ${lib_link_dir}/libtaos.dylib
     fi
+    
+    ${csudo} ldconfig
 }
 
 function install_header() {
diff --git a/packaging/tools/make_install.sh b/packaging/tools/make_install.sh
index 2200c7f13d20ecd19b75c8fe39185a3c69558f22..1a5c4d75b5f1ff9d98b62923d96eb3f45c619468 100755
--- a/packaging/tools/make_install.sh
+++ b/packaging/tools/make_install.sh
@@ -34,6 +34,7 @@ cfg_install_dir="/etc/taos"
 if [ "$osType" != "Darwin" ]; then
     bin_link_dir="/usr/bin"
     lib_link_dir="/usr/lib"
+    lib64_link_dir="/usr/lib64"
     inc_link_dir="/usr/include"
 else
     bin_link_dir="/usr/local/bin"
@@ -141,6 +142,7 @@ function install_bin() {
         ${csudo} rm -f ${bin_link_dir}/taosd    || :
         ${csudo} rm -f ${bin_link_dir}/taosdemo || :
         ${csudo} rm -f ${bin_link_dir}/taosdump || :
+        ${csudo} rm -f ${bin_link_dir}/set_core || :
     fi
 
     ${csudo} rm -f ${bin_link_dir}/rmtaos       || :
@@ -149,6 +151,7 @@ function install_bin() {
 
     if [ "$osType" != "Darwin" ]; then
         ${csudo} cp -r ${script_dir}/remove.sh   ${install_main_dir}/bin
+        ${csudo} cp -r ${script_dir}/set_core.sh   ${install_main_dir}/bin
     else
         ${csudo} cp -r ${script_dir}/remove_client.sh   ${install_main_dir}/bin
     fi
@@ -161,6 +164,7 @@ function install_bin() {
         [ -x ${install_main_dir}/bin/taosd ]     && ${csudo} ln -s ${install_main_dir}/bin/taosd ${bin_link_dir}/taosd   || :
         [ -x ${install_main_dir}/bin/taosdump ]  && ${csudo} ln -s ${install_main_dir}/bin/taosdump ${bin_link_dir}/taosdump || :
         [ -x ${install_main_dir}/bin/taosdemo ]  && ${csudo} ln -s ${install_main_dir}/bin/taosdemo ${bin_link_dir}/taosdemo || :
+        [ -x ${install_main_dir}/set_core.sh ]  && ${csudo} ln -s ${install_main_dir}/bin/set_core.sh ${bin_link_dir}/set_core || :
     fi
 
     if [ "$osType" != "Darwin" ]; then
@@ -173,17 +177,25 @@ function install_bin() {
 function install_lib() {
     # Remove links
     ${csudo} rm -f ${lib_link_dir}/libtaos.*     || :
+    ${csudo} rm -f ${lib64_link_dir}/libtaos.*   || :
     
     versioninfo=$(${script_dir}/get_version.sh ${source_dir}/src/util/src/version.c)
     if [ "$osType" != "Darwin" ]; then
         ${csudo} cp ${binary_dir}/build/lib/libtaos.so.${versioninfo} ${install_main_dir}/driver && ${csudo} chmod 777 ${install_main_dir}/driver/*
         ${csudo} ln -sf ${install_main_dir}/driver/libtaos.so.${versioninfo} ${lib_link_dir}/libtaos.so.1
         ${csudo} ln -sf ${lib_link_dir}/libtaos.so.1 ${lib_link_dir}/libtaos.so
+        
+        if [ -d "${lib64_link_dir}" ]; then
+          ${csudo} ln -sf ${install_main_dir}/driver/libtaos.so.${versioninfo} ${lib64_link_dir}/libtaos.so.1
+          ${csudo} ln -sf ${lib64_link_dir}/libtaos.so.1 ${lib64_link_dir}/libtaos.so
+        fi
     else
         ${csudo} cp ${binary_dir}/build/lib/libtaos.${versioninfo}.dylib ${install_main_dir}/driver && ${csudo} chmod 777 ${install_main_dir}/driver/*
         ${csudo} ln -sf ${install_main_dir}/driver/libtaos.${versioninfo}.dylib ${lib_link_dir}/libtaos.1.dylib
         ${csudo} ln -sf ${lib_link_dir}/libtaos.1.dylib ${lib_link_dir}/libtaos.dylib
     fi
+    
+    ${csudo} ldconfig
 }
 
 function install_header() {
diff --git a/packaging/tools/makeclient.sh b/packaging/tools/makeclient.sh
index 6120f9fcc2bb676b716be5172967bd7dfe2f0090..855d0b9c27cce54d5fd15d99179a451b5a966096 100755
--- a/packaging/tools/makeclient.sh
+++ b/packaging/tools/makeclient.sh
@@ -45,7 +45,7 @@ if [ "$osType" != "Darwin" ]; then
     strip ${build_dir}/bin/taos
     bin_files="${build_dir}/bin/taos ${script_dir}/remove_client.sh"
   else  
-    bin_files="${build_dir}/bin/taos ${build_dir}/bin/taosdump ${script_dir}/remove_client.sh"
+    bin_files="${build_dir}/bin/taos ${build_dir}/bin/taosdump ${script_dir}/remove_client.sh ${script_dir}/set_core.sh"
   fi
   lib_files="${build_dir}/lib/libtaos.so.${version}"
 else
diff --git a/packaging/tools/makepkg.sh b/packaging/tools/makepkg.sh
index 1d65dd8069d1faf960d4b73100a162558b2ea7b8..16e0354dcfd086486b167c71cd21c57ae43f7365 100755
--- a/packaging/tools/makepkg.sh
+++ b/packaging/tools/makepkg.sh
@@ -36,7 +36,7 @@ if [ "$pagMode" == "lite" ]; then
   strip ${build_dir}/bin/taos
   bin_files="${build_dir}/bin/taosd ${build_dir}/bin/taos ${script_dir}/remove.sh"
 else 
-  bin_files="${build_dir}/bin/taosd ${build_dir}/bin/taos ${build_dir}/bin/taosdemo ${build_dir}/bin/tarbitrator ${script_dir}/remove.sh"
+  bin_files="${build_dir}/bin/taosd ${build_dir}/bin/taos ${build_dir}/bin/taosdemo ${build_dir}/bin/tarbitrator ${script_dir}/remove.sh ${script_dir}/set_core.sh"
 fi
 
 lib_files="${build_dir}/lib/libtaos.so.${version}"
diff --git a/packaging/tools/post.sh b/packaging/tools/post.sh
index e9a742e63219e87dce4d8e82904f3c538403eb0d..0feb64c795159b67920c8a39b53b0125dfb565bf 100755
--- a/packaging/tools/post.sh
+++ b/packaging/tools/post.sh
@@ -90,6 +90,7 @@ function install_bin() {
     ${csudo} rm -f ${bin_link_dir}/taosd    || :
     ${csudo} rm -f ${bin_link_dir}/taosdemo || :
     ${csudo} rm -f ${bin_link_dir}/rmtaos   || :
+    ${csudo} rm -f ${bin_link_dir}/set_core || :
 
     ${csudo} chmod 0555 ${bin_dir}/*
 
@@ -97,7 +98,7 @@ function install_bin() {
     [ -x ${bin_dir}/taos ] && ${csudo} ln -s ${bin_dir}/taos ${bin_link_dir}/taos             || :
     [ -x ${bin_dir}/taosd ] && ${csudo} ln -s ${bin_dir}/taosd ${bin_link_dir}/taosd          || :
     [ -x ${bin_dir}/taosdemo ] && ${csudo} ln -s ${bin_dir}/taosdemo ${bin_link_dir}/taosdemo || :
-#   [ -x ${bin_dir}/remove.sh ] && ${csudo} ln -s ${bin_dir}/remove.sh ${bin_link_dir}/rmtaos || :
+    [ -x ${bin_dir}/set_core.sh ] && ${csudo} ln -s ${bin_dir}/set_core.sh ${bin_link_dir}/set_core || :
 }
 
 function install_config() {
diff --git a/packaging/tools/preun.sh b/packaging/tools/preun.sh
index 0533410802c09e0aee2e60766d5c621dd53c4272..07b43c0e49d56fd136747399c3c71fdb1885bea3 100755
--- a/packaging/tools/preun.sh
+++ b/packaging/tools/preun.sh
@@ -8,6 +8,7 @@ NC='\033[0m'
 
 bin_link_dir="/usr/bin"
 lib_link_dir="/usr/lib"
+lib64_link_dir="/usr/lib64"
 inc_link_dir="/usr/include"
 
 data_link_dir="/usr/local/taos/data"
@@ -104,10 +105,12 @@ ${csudo} rm -f ${bin_link_dir}/taos       || :
 ${csudo} rm -f ${bin_link_dir}/taosd      || :
 ${csudo} rm -f ${bin_link_dir}/taosdemo   || :
 ${csudo} rm -f ${bin_link_dir}/taosdump   || :
+${csudo} rm -f ${bin_link_dir}/set_core   || :
 ${csudo} rm -f ${cfg_link_dir}/*          || :
 ${csudo} rm -f ${inc_link_dir}/taos.h     || :
-${csudo} rm -f ${inc_link_dir}/taoserror.h     || :
-${csudo} rm -f ${lib_link_dir}/libtaos.*  || :
+${csudo} rm -f ${inc_link_dir}/taoserror.h || :
+${csudo} rm -f ${lib_link_dir}/libtaos.*   || :
+${csudo} rm -f ${lib64_link_dir}/libtaos.* || :
 
 ${csudo} rm -f ${log_link_dir}            || :
 ${csudo} rm -f ${data_link_dir}           || :
diff --git a/packaging/tools/set_core.sh b/packaging/tools/set_core.sh
new file mode 100755
index 0000000000000000000000000000000000000000..083b0516dbb03daafe8c19548b7fac494af7d24a
--- /dev/null
+++ b/packaging/tools/set_core.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+#
+# This file is used to set config for core when taosd crash
+
+set -e
+# set -x
+
+csudo=""
+if command -v sudo > /dev/null; then
+  csudo="sudo"
+fi
+
+#ulimit -c unlimited
+${csudo} sed -i '/ulimit -c unlimited/d' /etc/profile ||:
+${csudo} sed -i '$a\ulimit -c unlimited' /etc/profile ||:
+source /etc/profile
+
+${csudo} mkdir -p /coredump  ||:
+${csudo} sysctl -w kernel.core_pattern='/coredump/core-%e-%p'  ||:
+${csudo} echo '/coredump/core-%e-%p' | ${csudo} tee /proc/sys/kernel/core_pattern  ||:
diff --git a/src/common/src/tglobal.c b/src/common/src/tglobal.c
index 3747264123c7825abe95ec3fbd8ef603c0643c87..391e5f5935069e285dab3bf1475b007d2bcd5ef7 100644
--- a/src/common/src/tglobal.c
+++ b/src/common/src/tglobal.c
@@ -54,7 +54,7 @@ int8_t  tsDaylight = 0;
 char    tsTimezone[TSDB_TIMEZONE_LEN] = {0};
 char    tsLocale[TSDB_LOCALE_LEN] = {0};
 char    tsCharset[TSDB_LOCALE_LEN] = {0};  // default encode string
-int32_t tsEnableCoreFile = 0;
+int32_t tsEnableCoreFile = 1;
 int32_t tsMaxBinaryDisplayWidth = 30;
 
 /*