diff --git a/documentation20/webdocs/markdowndocs/TAOS SQL-ch.md b/documentation20/webdocs/markdowndocs/TAOS SQL-ch.md
index e0acaee137eb8f4d65e95ae97be7bbc8988cb122..66d17c6aa686a7ed07ff1b865000f7b4a43f3834 100644
--- a/documentation20/webdocs/markdowndocs/TAOS SQL-ch.md	
+++ b/documentation20/webdocs/markdowndocs/TAOS SQL-ch.md	
@@ -98,12 +98,12 @@ TDengine缺省的时间戳是毫秒精度，但通过修改配置参数enableMic
     KEEP参数是指修改数据文件保存的天数，缺省值为3650，取值范围[days, 365000]，必须大于或等于days参数值。
 
     ```mysql
-    ALTER DATABASE db_name QUORUM 365;
+    ALTER DATABASE db_name QUORUM 2;
     ```
     QUORUM参数是指数据写入成功所需要的确认数。取值范围[1, 3]。对于异步复制，quorum设为1，具有master角色的虚拟节点自己确认即可。对于同步复制，需要至少大于等于2。原则上，Quorum >=1 并且 Quorum <= replica(副本数)，这个参数在启动一个同步模块实例时需要提供。
 
     ```mysql
-    ALTER DATABASE db_name BLOCKS 365;
+    ALTER DATABASE db_name BLOCKS 100;
     ```
     BLOCKS参数是每个VNODE (TSDB) 中有多少cache大小的内存块，因此一个VNODE的用的内存大小粗略为（cache * blocks）。取值范围[3, 1000]。
 
diff --git a/tests/pytest/client/alterDatabase.py b/tests/pytest/client/alterDatabase.py
new file mode 100644
index 0000000000000000000000000000000000000000..fa397d16c57625d53f6f1b2772afa99ade314e1a
--- /dev/null
+++ b/tests/pytest/client/alterDatabase.py
@@ -0,0 +1,55 @@
+###################################################################
+#           Copyright (c) 2016 by TAOS Technologies, Inc.
+#                     All rights reserved.
+#
+#  This file is proprietary and confidential to TAOS Technologies.
+#  No part of this file may be reproduced, stored, transmitted,
+#  disclosed or used in any form or by any means other than as
+#  expressly provided by the written permission from Jianhui Tao
+#
+###################################################################
+
+# -*- coding: utf-8 -*-
+
+import sys
+from util.log import *
+from util.cases import *
+from util.sql import *
+
+
+class TDTestCase:
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+
+    def run(self):
+        tdSql.prepare()
+
+        tdSql.query('select database()')
+        tdSql.checkData(0, 0, "db")        
+        
+        tdSql.execute("alter database db comp 2")
+        tdSql.query("show databases")
+        tdSql.checkData(0, 14, 2)
+
+        tdSql.execute("alter database db keep 365")
+        tdSql.query("show databases")
+        tdSql.checkData(0, 7, "3650,3650,365")
+
+        tdSql.execute("alter database db quorum 2")
+        tdSql.query("show databases")
+        tdSql.checkData(0, 5, 2)
+
+        tdSql.execute("alter database db blocks 100")
+        tdSql.query("show databases")
+        tdSql.checkData(0, 9, 100)
+
+
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())
\ No newline at end of file
diff --git a/tests/pytest/fulltest.sh b/tests/pytest/fulltest.sh
index a73e7dd5a573483ffaeda4f3fde659e7076566dc..b679942054c000050271fcb96328d18adea60b42 100755
--- a/tests/pytest/fulltest.sh
+++ b/tests/pytest/fulltest.sh
@@ -164,6 +164,7 @@ python3 ./test.py -f alter/alter_table_crash.py
 # client
 python3 ./test.py -f client/client.py
 python3 ./test.py -f client/version.py
+python3 ./test.py -f client/alterDatabase.py
 
 # Misc
 python3 testCompress.py