diff --git a/packaging/deb/makedeb.sh b/packaging/deb/makedeb.sh
index 55fbd96d3f68b6157d70ac41ca4891d673104a7e..7bcb8562918925afa6e198181b1a9bfca55b09f5 100755
--- a/packaging/deb/makedeb.sh
+++ b/packaging/deb/makedeb.sh
@@ -47,7 +47,6 @@ cp ${compile_dir}/../packaging/cfg/taos.cfg         ${pkg_dir}${install_home_pat
 cp ${compile_dir}/../packaging/deb/taosd            ${pkg_dir}${install_home_path}/init.d
 cp ${compile_dir}/../packaging/tools/post.sh        ${pkg_dir}${install_home_path}/script
 cp ${compile_dir}/../packaging/tools/preun.sh       ${pkg_dir}${install_home_path}/script
-cp ${compile_dir}/build/bin/taosdump                ${pkg_dir}${install_home_path}/bin
 cp ${compile_dir}/build/bin/taosdemo                ${pkg_dir}${install_home_path}/bin
 cp ${compile_dir}/build/bin/taosd                   ${pkg_dir}${install_home_path}/bin
 cp ${compile_dir}/build/bin/taos                    ${pkg_dir}${install_home_path}/bin
diff --git a/packaging/rpm/tdengine.spec b/packaging/rpm/tdengine.spec
index ef02fb90fca722571271207cd21b22f0080f73bb..2fac159b041c7a7eff9a24520203e27d9083c2b5 100644
--- a/packaging/rpm/tdengine.spec
+++ b/packaging/rpm/tdengine.spec
@@ -58,7 +58,6 @@ cp %{_compiledir}/../packaging/tools/preun.sh       %{buildroot}%{homepath}/scri
 cp %{_compiledir}/build/bin/taos                    %{buildroot}%{homepath}/bin
 cp %{_compiledir}/build/bin/taosd                   %{buildroot}%{homepath}/bin
 cp %{_compiledir}/build/bin/taosdemo                %{buildroot}%{homepath}/bin
-cp %{_compiledir}/build/bin/taosdump                %{buildroot}%{homepath}/bin
 cp %{_compiledir}/build/lib/${libfile}              %{buildroot}%{homepath}/driver
 cp %{_compiledir}/../src/inc/taos.h                 %{buildroot}%{homepath}/include
 cp %{_compiledir}/../src/inc/taoserror.h            %{buildroot}%{homepath}/include
@@ -134,7 +133,6 @@ if [ $1 -eq 0 ];then
     ${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 ${cfg_link_dir}/*          || :
     ${csudo} rm -f ${inc_link_dir}/taos.h     || :
     ${csudo} rm -f ${inc_link_dir}/taoserror.h     || :
diff --git a/packaging/tools/install.sh b/packaging/tools/install.sh
index ce5c052e97bfbd80e5b394254a64fe790a5f7ad0..0700ed46828674ac0eda71643c65f4b4b462f2cb 100644
--- a/packaging/tools/install.sh
+++ b/packaging/tools/install.sh
@@ -22,6 +22,7 @@ cfg_install_dir="/etc/taos"
 
 bin_link_dir="/usr/bin"
 lib_link_dir="/usr/lib"
+lib64_link_dir="/usr/lib64"
 inc_link_dir="/usr/include"
 
 #install main path
@@ -165,7 +166,6 @@ function install_bin() {
     ${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}/rmtaos   || :
     ${csudo} rm -f ${bin_link_dir}/tarbitrator   || :
 
@@ -174,7 +174,6 @@ function install_bin() {
     #Make link
     [ -x ${install_main_dir}/bin/taos ] && ${csudo} ln -s ${install_main_dir}/bin/taos ${bin_link_dir}/taos                      || :
     [ -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}/bin/remove.sh ] && ${csudo} ln -s ${install_main_dir}/bin/remove.sh ${bin_link_dir}/rmtaos          || :
     [ -x ${install_main_dir}/bin/tarbitrator ] && ${csudo} ln -s ${install_main_dir}/bin/tarbitrator ${bin_link_dir}/tarbitrator || :
@@ -189,6 +188,7 @@ function install_bin() {
 function install_lib() {
     # Remove links
     ${csudo} rm -f ${lib_link_dir}/libtaos.*         || :
+    ${csudo} rm -f ${lib64_link_dir}/libtaos.*       || :
     #${csudo} rm -rf ${v15_java_app_dir}              || :
 
     ${csudo} cp -rf ${script_dir}/driver/* ${install_main_dir}/driver && ${csudo} chmod 777 ${install_main_dir}/driver/*  
@@ -196,6 +196,9 @@ 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 ${lib64_link_dir}/libtaos.so               || :
+        
 	  #if [ "$verMode" == "cluster" ]; then
     #    # Compatible with version 1.5
     #    ${csudo} mkdir -p ${v15_java_app_dir}
diff --git a/packaging/tools/makepkg.sh b/packaging/tools/makepkg.sh
index 1cb412d9dd227d791cd904e247bf86237d59263b..1d65dd8069d1faf960d4b73100a162558b2ea7b8 100755
--- a/packaging/tools/makepkg.sh
+++ b/packaging/tools/makepkg.sh
@@ -36,7 +36,7 @@ if [ "$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/taosdump ${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"
 fi
 
 lib_files="${build_dir}/lib/libtaos.so.${version}"
diff --git a/packaging/tools/post.sh b/packaging/tools/post.sh
index cffe06e30c116ae8a4faa01a0afd44c055322359..e9a742e63219e87dce4d8e82904f3c538403eb0d 100755
--- a/packaging/tools/post.sh
+++ b/packaging/tools/post.sh
@@ -21,6 +21,7 @@ inc_dir="/usr/local/taos/include"
 cfg_install_dir="/etc/taos"
 bin_link_dir="/usr/bin"
 lib_link_dir="/usr/lib"
+lib64_link_dir="/usr/lib64"
 inc_link_dir="/usr/include"
 
 service_config_dir="/etc/systemd/system"
@@ -74,16 +75,19 @@ function install_include() {
 
 function install_lib() {
     ${csudo} rm -f ${lib_link_dir}/libtaos* || :
+    ${csudo} rm -f ${lib64_link_dir}/libtaos* || :
     
     ${csudo} ln -s ${lib_dir}/libtaos.* ${lib_link_dir}/libtaos.so.1
     ${csudo} ln -s ${lib_link_dir}/libtaos.so.1 ${lib_link_dir}/libtaos.so
+    
+    ${csudo} ln -s ${lib_dir}/libtaos.* ${lib64_link_dir}/libtaos.so.1           || :
+    ${csudo} ln -s ${lib64_link_dir}/libtaos.so.1 ${lib64_link_dir}/libtaos.so   || :
 }
 
 function install_bin() {
     # Remove links
     ${csudo} rm -f ${bin_link_dir}/taos     || :
     ${csudo} rm -f ${bin_link_dir}/taosd    || :
-    ${csudo} rm -f ${bin_link_dir}/taosdump || :
     ${csudo} rm -f ${bin_link_dir}/taosdemo || :
     ${csudo} rm -f ${bin_link_dir}/rmtaos   || :
 
@@ -92,7 +96,6 @@ function install_bin() {
     #Make link
     [ -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}/taosdump ] && ${csudo} ln -s ${bin_dir}/taosdump ${bin_link_dir}/taosdump || :
     [ -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 || :
 }
diff --git a/src/kit/taosdump/taosdump.c b/src/kit/taosdump/taosdump.c
index ee98c711e00ab6feca6b652a729c8abea749a62b..993352dc211c87e91c0f25a05de9ed2abf7a7217 100644
--- a/src/kit/taosdump/taosdump.c
+++ b/src/kit/taosdump/taosdump.c
@@ -29,6 +29,7 @@
 #include <iconv.h>
 #include <time.h>
 
+#include "os.h"
 #include "taos.h"
 #include "taosdef.h"
 #include "taosmsg.h"
@@ -191,7 +192,7 @@ struct arguments {
   char    *user;
   char    *password;
   uint16_t port;  
-  char     cversion[TSDB_FILENAME_LEN+1];
+  char     cversion[12];
   uint16_t mysqlFlag;
   // output file
   char     outpath[TSDB_FILENAME_LEN+1];
@@ -248,7 +249,7 @@ static error_t parse_opt(int key, char *arg, struct argp_state *state) {
         fprintf(stderr, "Invalid client vesion %s\n", arg);
         return -1;
       }
-      strcpy(arguments->cversion, full_path.we_wordv[0]);
+      tstrncpy(arguments->cversion, full_path.we_wordv[0], 11);
       wordfree(&full_path);
       break;
     // output file path
@@ -257,7 +258,7 @@ static error_t parse_opt(int key, char *arg, struct argp_state *state) {
         fprintf(stderr, "Invalid path %s\n", arg);
         return -1;
       }
-      strcpy(arguments->outpath, full_path.we_wordv[0]);
+      tstrncpy(arguments->outpath, full_path.we_wordv[0], TSDB_FILENAME_LEN);
       wordfree(&full_path);
       break;
     case 'i':
@@ -266,7 +267,7 @@ static error_t parse_opt(int key, char *arg, struct argp_state *state) {
         fprintf(stderr, "Invalid path %s\n", arg);
         return -1;
       }
-      strcpy(arguments->inpath, full_path.we_wordv[0]);
+      tstrncpy(arguments->inpath, full_path.we_wordv[0], TSDB_FILENAME_LEN);
       wordfree(&full_path);
       break;
     case 'c':
@@ -430,7 +431,7 @@ int main(int argc, char *argv[]) {
   printf("==============================\n");
 
   if (tsArguments.cversion[0] != 0){
-    strcpy(version, tsArguments.cversion);
+    tstrncpy(version, tsArguments.cversion, 11);
   }
 
   if (taosCheckParam(&tsArguments) < 0) {
@@ -513,7 +514,7 @@ int taosGetTableRecordInfo(char *table, STableRecordInfo *pTableRecordInfo, TAOS
   while ((row = taos_fetch_row(result)) != NULL) {
     isSet = true;
     pTableRecordInfo->isMetric = true;
-    strcpy(pTableRecordInfo->tableRecord.metric, table);
+    tstrncpy(pTableRecordInfo->tableRecord.metric, table, TSDB_TABLE_NAME_LEN);
     break;
   }
 
@@ -541,9 +542,9 @@ int32_t taosSaveAllNormalTableToTempFile(TAOS *taosCon, char*meter, char* metric
     }
   }
   
-  memset(tableRecord.name, 0, sizeof(STableRecord));
-  strcpy(tableRecord.name, meter);
-  strcpy(tableRecord.metric, metric);
+  memset(&tableRecord, 0, sizeof(STableRecord));
+  tstrncpy(tableRecord.name, meter, TSDB_TABLE_NAME_LEN);
+  tstrncpy(tableRecord.metric, metric, TSDB_TABLE_NAME_LEN);
 
   taosTWrite(*fd, &tableRecord, sizeof(STableRecord));
   return 0;
@@ -587,7 +588,7 @@ int32_t taosSaveTableOfMetricToTempFile(TAOS *taosCon, char* metric, struct argu
         taos_free_result(result);
         for (int32_t loopCnt = 0; loopCnt < numOfThread; loopCnt++) {
           sprintf(tmpFileName, ".tables.tmp.%d", loopCnt);
-          remove(tmpFileName);
+          (void)remove(tmpFileName);
         }
         free(tmpCommand);
         return -1;
@@ -597,8 +598,8 @@ int32_t taosSaveTableOfMetricToTempFile(TAOS *taosCon, char* metric, struct argu
     }
   
     memset(tableRecord.name, 0, sizeof(STableRecord));
-    strncpy(tableRecord.name, (char *)row[0], fields[0].bytes);
-    strcpy(tableRecord.metric, metric);
+    tstrncpy(tableRecord.name, (char *)row[0], fields[0].bytes);
+    tstrncpy(tableRecord.metric, metric, TSDB_TABLE_NAME_LEN);
 
     taosTWrite(fd, &tableRecord, sizeof(STableRecord));
 
@@ -606,12 +607,16 @@ int32_t taosSaveTableOfMetricToTempFile(TAOS *taosCon, char* metric, struct argu
 
     if (numOfTable >= arguments->table_batch) {
       numOfTable = 0;
-      taosClose(fd);
+      close(fd);
       fd = -1;
     }
   }
-  taosClose(fd);
-  fd = -1;
+  
+  if (fd >= 0) {
+    close(fd);
+    fd = -1;
+  }
+  
   taos_free_result(result);
 
   *totalNumOfThread = numOfThread;
@@ -852,7 +857,7 @@ int taosGetTableDes(char *table, STableDef *tableDes, TAOS* taosCon, bool isSupe
 
   TAOS_FIELD *fields = taos_fetch_fields(tmpResult);
 
-  strcpy(tableDes->name, table);
+  tstrncpy(tableDes->name, table, TSDB_COL_NAME_LEN);
 
   while ((row = taos_fetch_row(tmpResult)) != NULL) {
     strncpy(tableDes->cols[count].field, (char *)row[TSDB_DESCRIBE_METRIC_FIELD_INDEX],
@@ -1056,6 +1061,7 @@ void* taosDumpOutWorkThreadFp(void *arg)
   fp = fopen(tmpFileName, "w");
   if (fp == NULL) {
     fprintf(stderr, "failed to open file %s\n", tmpFileName);
+    close(fd);
     return NULL;
   }
 
@@ -1067,16 +1073,20 @@ void* taosDumpOutWorkThreadFp(void *arg)
   if (code != 0) {
     fprintf(stderr, "invalid database %s\n", pThread->dbName);
     taos_free_result(tmpResult);
+    fclose(fp);  
+    close(fd);
     return NULL;
   }
 
   fprintf(fp, "USE %s\n\n", pThread->dbName);
-  while (read(fd, &tableRecord, sizeof(STableRecord)) > 0) {
+  while (1) {
+    ssize_t readLen = read(fd, &tableRecord, sizeof(STableRecord));
+    if (readLen <= 0) break;
     taosDumpTable(tableRecord.name, tableRecord.metric, &tsArguments, fp, pThread->taosCon);
   }
 
   taos_free_result(tmpResult);
-  taosClose(fd);
+  close(fd);
   fclose(fp);  
 
   return NULL;
@@ -1090,7 +1100,7 @@ static void taosStartDumpOutWorkThreads(struct arguments* args, int32_t  numOfTh
     SThreadParaObj *pThread = threadObj + t;
     pThread->threadIndex = t;
     pThread->totalThreads = numOfThread;
-    strcpy(pThread->dbName, dbName);
+    tstrncpy(pThread->dbName, dbName, TSDB_TABLE_NAME_LEN);
     pThread->taosCon = taos_connect(args->host, args->user, args->password, NULL, args->port);
                                 
     if (pThread->taosCon == NULL) {
@@ -1189,7 +1199,7 @@ int32_t taosDumpCreateSuperTableClause(TAOS* taosCon, char* dbName, FILE *fp)
     fprintf(stderr, "failed to open temp file: %s\n", tmpFileName);
     taos_free_result(tmpResult);
     free(tmpCommand);
-    remove(".stables.tmp");
+    (void)remove(".stables.tmp");
     exit(-1);
   }
   
@@ -1200,14 +1210,17 @@ int32_t taosDumpCreateSuperTableClause(TAOS* taosCon, char* dbName, FILE *fp)
   }  
   
   taos_free_result(tmpResult);
-  lseek(fd, 0, SEEK_SET);
+  (void)lseek(fd, 0, SEEK_SET);
 
-  while (read(fd, &tableRecord, sizeof(STableRecord)) > 0) {
+  while (1) {
+    ssize_t readLen = read(fd, &tableRecord, sizeof(STableRecord));
+    if (readLen <= 0) break;
+    
     (void)taosDumpStable(tableRecord.name, fp, taosCon);
   }
 
-  taosClose(fd);
-  remove(".stables.tmp");
+  close(fd);
+  (void)remove(".stables.tmp");
   
   free(tmpCommand);
   return 0;  
@@ -1269,7 +1282,7 @@ int taosDumpDb(SDbInfo *dbInfo, struct arguments *arguments, FILE *fp, TAOS *tao
         taos_free_result(tmpResult);
         for (int32_t loopCnt = 0; loopCnt < numOfThread; loopCnt++) {
           sprintf(tmpFileName, ".tables.tmp.%d", loopCnt);
-          remove(tmpFileName);
+          (void)remove(tmpFileName);
         }
         free(tmpCommand);
         return -1;
@@ -1279,8 +1292,8 @@ int taosDumpDb(SDbInfo *dbInfo, struct arguments *arguments, FILE *fp, TAOS *tao
     }
   
     memset(&tableRecord, 0, sizeof(STableRecord));
-    strncpy(tableRecord.name, (char *)row[TSDB_SHOW_TABLES_NAME_INDEX], fields[TSDB_SHOW_TABLES_NAME_INDEX].bytes);
-    strncpy(tableRecord.metric, (char *)row[TSDB_SHOW_TABLES_METRIC_INDEX], fields[TSDB_SHOW_TABLES_METRIC_INDEX].bytes);
+    tstrncpy(tableRecord.name, (char *)row[TSDB_SHOW_TABLES_NAME_INDEX], fields[TSDB_SHOW_TABLES_NAME_INDEX].bytes);
+    tstrncpy(tableRecord.metric, (char *)row[TSDB_SHOW_TABLES_METRIC_INDEX], fields[TSDB_SHOW_TABLES_METRIC_INDEX].bytes);
 
     taosTWrite(fd, &tableRecord, sizeof(STableRecord));
 
@@ -1288,19 +1301,23 @@ int taosDumpDb(SDbInfo *dbInfo, struct arguments *arguments, FILE *fp, TAOS *tao
 
     if (numOfTable >= arguments->table_batch) {
       numOfTable = 0;
-      taosClose(fd);
+      close(fd);
       fd = -1;
     }
   }
-  taosClose(fd);
-  fd = -1;
+
+  if (fd >= 0) {
+    close(fd);
+    fd = -1;
+  }
+  
   taos_free_result(tmpResult);
 
   // start multi threads to dumpout
   taosStartDumpOutWorkThreads(arguments, numOfThread, dbInfo->name);
   for (int loopCnt = 0; loopCnt < numOfThread; loopCnt++) {
     sprintf(tmpFileName, ".tables.tmp.%d", loopCnt);
-    remove(tmpFileName);
+    (void)remove(tmpFileName);
   }
   
   free(tmpCommand);
@@ -1718,6 +1735,10 @@ int convertNCharToReadable(char *str, int size, char *buf, int bufsize) {
   while (size > 0) {
     if (*pstr == '\0') break;
     int byte_width = mbtowc(&wc, pstr, MB_CUR_MAX);
+    if (byte_width < 0) {
+      fprintf(stderr, "mbtowc() return fail.\n");
+      exit(-1);
+    }
 
     if ((int)wc < 256) {
       pbuf = stpcpy(pbuf, ascii_literal_list[(int)wc]);
@@ -1736,16 +1757,16 @@ int convertNCharToReadable(char *str, int size, char *buf, int bufsize) {
 void taosDumpCharset(FILE *fp) {
   char charsetline[256];
 
-  fseek(fp, 0, SEEK_SET);
+  (void)fseek(fp, 0, SEEK_SET);
   sprintf(charsetline, "#!%s\n", tsCharset);
-  fwrite(charsetline, strlen(charsetline), 1, fp);
+  (void)fwrite(charsetline, strlen(charsetline), 1, fp);
 }
 
 void taosLoadFileCharset(FILE *fp, char *fcharset) {
   char * line = NULL;
   size_t line_size = 0;
 
-  fseek(fp, 0, SEEK_SET);
+  (void)fseek(fp, 0, SEEK_SET);
   ssize_t size = getline(&line, &line_size, fp);
   if (size <= 2) {
     goto _exit_no_charset;
@@ -1764,7 +1785,7 @@ void taosLoadFileCharset(FILE *fp, char *fcharset) {
   return;
 
 _exit_no_charset:
-  fseek(fp, 0, SEEK_SET);
+  (void)fseek(fp, 0, SEEK_SET);
   *fcharset = '\0';
   taosTFree(line);
   return;
@@ -1825,6 +1846,7 @@ static void taosParseDirectory(const char *directoryName, const char *prefix, ch
 
   if (fileNum != totalFiles) {
     fprintf(stderr, "ERROR: directory:%s changed while read\n", directoryName);
+    pclose(fp);
     exit(0);
   }