diff --git a/tests/army/tools/taosdump/native/taosdumpCommandline.py b/tests/army/tools/taosdump/native/taosdumpCommandline.py
index c43ea0e9e7..a3ee8e55ed 100644
--- a/tests/army/tools/taosdump/native/taosdumpCommandline.py
+++ b/tests/army/tools/taosdump/native/taosdumpCommandline.py
@@ -214,6 +214,27 @@ class TDTestCase(TBase):
         self.checkExcept(taosdump + f" -t 2 -k 2 -z 1 -C https://not-exist.com:80/cloud -D test -o {tmpdir}")
         self.checkExcept(taosdump + f" -P 65536")
 
+    # password
+    def checkPassword(self, tmpdir):
+        # 255 char max password
+        pwd     = ""
+        pwdFile = "cmdline/data/pwdMax.txt"
+        with open(pwdFile) as file:
+            pwd = file.readline()
+        
+        sql = f"create user dkj pass '{pwd}' "
+        tdSql.execute(sql)
+         
+        cmds = [
+            f"-udkj -p{pwd}        -D test -o {tmpdir}",  # command pass
+            f"-udkj -p < {pwdFile} -D test -o {tmpdir}"   # input   pass
+        ]
+
+        for cmd in cmds:
+            self.clearPath(tmpdir)
+            rlist = self.taosdump(cmd)
+            self.checkListString(rlist, "OK: Database test dumped")
+
     # run
     def run(self):
         
@@ -249,6 +270,12 @@ class TDTestCase(TBase):
         self.dumpInOutMode("", db , json, tmpdir)
         tdLog.info("4. native varbinary geometry ........................... [Passed]")
 
+        #
+        # long password
+        #
+        self.checkPassword(tmpdir)
+        tdLog.info("5. check long password ................................. [Passed]")
+
 
     def stop(self):
         tdSql.close()
diff --git a/tools/taos-tools/inc/bench.h b/tools/taos-tools/inc/bench.h
index c413d953b7..17e381ffb5 100644
--- a/tools/taos-tools/inc/bench.h
+++ b/tools/taos-tools/inc/bench.h
@@ -152,7 +152,7 @@ typedef unsigned __int32 uint32_t;
 
 #define MAX_JSON_BUFF 6400000
 
-#define INPUT_BUF_LEN         256
+#define INPUT_BUF_LEN         512
 #define EXTRA_SQL_LEN         256
 #define DATATYPE_BUFF_LEN     (TINY_BUFF_LEN * 3)
 #define SML_MAX_BATCH          65536 * 32
diff --git a/tools/taos-tools/inc/dump.h b/tools/taos-tools/inc/dump.h
index b21dca4343..b76727fbef 100644
--- a/tools/taos-tools/inc/dump.h
+++ b/tools/taos-tools/inc/dump.h
@@ -39,6 +39,7 @@
 #include <taos.h>
 #include <taoserror.h>
 #include <toolsdef.h>
+#include <tdef.h>
 
 #ifdef WEBSOCKET
 #include <taosws.h>
@@ -336,7 +337,7 @@ typedef struct arguments {
     // connection option
     char    *host;
     char    *user;
-    char     password[SHELL_MAX_PASSWORD_LEN];
+    char     password[TSDB_USET_PASSWORD_LONGLEN];
     uint16_t port;
     // strlen(taosdump.) +1 is 10
     char     outpath[DUMP_DIR_LEN];
diff --git a/tools/taos-tools/inc/toolsdef.h b/tools/taos-tools/inc/toolsdef.h
index ed17380251..b9c0c889ad 100644
--- a/tools/taos-tools/inc/toolsdef.h
+++ b/tools/taos-tools/inc/toolsdef.h
@@ -77,7 +77,7 @@ extern "C" {
 #define TSDB_DEFAULT_PASS               "taosdata"
 
 #define TSDB_PASS_LEN                   129
-#define SHELL_MAX_PASSWORD_LEN          TSDB_PASS_LEN
+
 
 #define TSDB_TIME_PRECISION_MILLI       0
 #define TSDB_TIME_PRECISION_MICRO       1
diff --git a/tools/taos-tools/src/taosdump.c b/tools/taos-tools/src/taosdump.c
index 35fae99c6a..e26d14aae1 100644
--- a/tools/taos-tools/src/taosdump.c
+++ b/tools/taos-tools/src/taosdump.c
@@ -784,8 +784,7 @@ static void parse_args(
                 }
                 setConsoleEcho(true);
             } else {
-                tstrncpy(arguments->password, (char *)(argv[i] + 2),
-                        SHELL_MAX_PASSWORD_LEN);
+                strcpy(arguments->password, (char *)(argv[i] + 2));
                 strcpy(argv[i], "-p");
             }
         } else if (strcmp(argv[i], "-n") == 0) {