diff --git a/tools/upgrade/oceanbase_upgrade_dep.yml b/tools/upgrade/oceanbase_upgrade_dep.yml
index 9800b2eb80..d41fc7ea53 100644
--- a/tools/upgrade/oceanbase_upgrade_dep.yml
+++ b/tools/upgrade/oceanbase_upgrade_dep.yml
@@ -29,7 +29,7 @@
       - 4.1.0.1
   require_from_binary:
     value: True
-    when_come_from: [4.0.0.0, 4.1.0.0]
+    when_come_from: [4.0.0.0]
 
 - version: 4.1.0.1
   can_be_upgraded_to:
diff --git a/tools/upgrade/upgrade_checker.py b/tools/upgrade/upgrade_checker.py
index cbae71292a..7dc3b9120d 100755
--- a/tools/upgrade/upgrade_checker.py
+++ b/tools/upgrade/upgrade_checker.py
@@ -398,7 +398,7 @@ def check_rebalance_task(query_cur):
 # 4. 检查集群状态
 def check_cluster_status(query_cur):
   # 4.1 检查是否非合并状态
-  (desc, results) = query_cur.exec_query("""select count(1) from CDB_OB_MAJOR_COMPACTION where STATUS != 'IDLE'""")
+  (desc, results) = query_cur.exec_query("""select count(1) from CDB_OB_MAJOR_COMPACTION where (GLOBAL_BROADCAST_SCN > LAST_SCN or STATUS != 'IDLE')""")
   if results[0][0] > 0 :
     fail_list.append('{0} tenant is merging, please check'.format(results[0][0]))
   logging.info('check cluster status success')
@@ -555,6 +555,28 @@ def check_backup_dest_exist(query_cur):
       else:
         logging.info('check backup destination success')
 
+def check_server_version(query_cur):
+    sql = """select distinct(substring_index(build_version, '_', 1)) from __all_server""";
+    (desc, results) = query_cur.exec_query(sql);
+    if len(results) != 1:
+      fail_list.append("servers build_version not match")
+    else:
+      logging.info("check server version success")
+
+# 14. 检查server是否可服务
+def check_observer_status(query_cur):
+  (desc, results) = query_cur.exec_query("""select count(*) from oceanbase.__all_server where (start_service_time <= 0 or status != "active")""")
+  if results[0][0] > 0 :
+    fail_list.append('{0} observer not available , please check'.format(results[0][0]))
+  logging.info('check observer status success')
+
+# 15  检查schema是否刷新成功
+def check_schema_status(query_cur):
+  (desc, results) = query_cur.exec_query("""select if (a.cnt = b.cnt, 1, 0) as passed from (select count(*) as cnt from oceanbase.__all_virtual_server_schema_info where refreshed_schema_version > 1 and refreshed_schema_version % 8 = 0) as a join (select count(*) as cnt from oceanbase.__all_server join oceanbase.__all_tenant) as b""")
+  if results[0][0] != 1 :
+    fail_list.append('{0} schema not available, please check'.format(results[0][0]))
+  logging.info('check schema status success')
+
 # last check of do_check, make sure no function execute after check_fail_list
 def check_fail_list():
   if len(fail_list) != 0 :
@@ -593,6 +615,9 @@ def do_check(my_host, my_port, my_user, my_passwd, timeout, upgrade_params):
       check_archive_job_exist(query_cur)
       check_archive_dest_exist(query_cur)
       check_backup_dest_exist(query_cur)
+      check_observer_status(query_cur)
+      check_schema_status(query_cur)
+      check_server_version(query_cur)
       # all check func should execute before check_fail_list
       check_fail_list()
       modify_server_permanent_offline_time(cur)
diff --git a/tools/upgrade/upgrade_post.py b/tools/upgrade/upgrade_post.py
index c311e136a5..1e92782d99 100755
--- a/tools/upgrade/upgrade_post.py
+++ b/tools/upgrade/upgrade_post.py
@@ -1902,7 +1902,7 @@
 ## 4. 检查集群状态
 #def check_cluster_status(query_cur):
 #  # 4.1 检查是否非合并状态
-#  (desc, results) = query_cur.exec_query("""select count(1) from CDB_OB_MAJOR_COMPACTION where STATUS != 'IDLE'""")
+#  (desc, results) = query_cur.exec_query("""select count(1) from CDB_OB_MAJOR_COMPACTION where (GLOBAL_BROADCAST_SCN > LAST_SCN or STATUS != 'IDLE')""")
 #  if results[0][0] > 0 :
 #    fail_list.append('{0} tenant is merging, please check'.format(results[0][0]))
 #  logging.info('check cluster status success')
@@ -2059,6 +2059,28 @@
 #      else:
 #        logging.info('check backup destination success')
 #
+#def check_server_version(query_cur):
+#    sql = """select distinct(substring_index(build_version, '_', 1)) from __all_server""";
+#    (desc, results) = query_cur.exec_query(sql);
+#    if len(results) != 1:
+#      fail_list.append("servers build_version not match")
+#    else:
+#      logging.info("check server version success")
+#
+## 14. 检查server是否可服务
+#def check_observer_status(query_cur):
+#  (desc, results) = query_cur.exec_query("""select count(*) from oceanbase.__all_server where (start_service_time <= 0 or status != "active")""")
+#  if results[0][0] > 0 :
+#    fail_list.append('{0} observer not available , please check'.format(results[0][0]))
+#  logging.info('check observer status success')
+#
+## 15  检查schema是否刷新成功
+#def check_schema_status(query_cur):
+#  (desc, results) = query_cur.exec_query("""select if (a.cnt = b.cnt, 1, 0) as passed from (select count(*) as cnt from oceanbase.__all_virtual_server_schema_info where refreshed_schema_version > 1 and refreshed_schema_version % 8 = 0) as a join (select count(*) as cnt from oceanbase.__all_server join oceanbase.__all_tenant) as b""")
+#  if results[0][0] != 1 :
+#    fail_list.append('{0} schema not available, please check'.format(results[0][0]))
+#  logging.info('check schema status success')
+#
 ## last check of do_check, make sure no function execute after check_fail_list
 #def check_fail_list():
 #  if len(fail_list) != 0 :
@@ -2097,6 +2119,9 @@
 #      check_archive_job_exist(query_cur)
 #      check_archive_dest_exist(query_cur)
 #      check_backup_dest_exist(query_cur)
+#      check_observer_status(query_cur)
+#      check_schema_status(query_cur)
+#      check_server_version(query_cur)
 #      # all check func should execute before check_fail_list
 #      check_fail_list()
 #      modify_server_permanent_offline_time(cur)
diff --git a/tools/upgrade/upgrade_pre.py b/tools/upgrade/upgrade_pre.py
index 35f3ec2f87..1b4becf5d2 100755
--- a/tools/upgrade/upgrade_pre.py
+++ b/tools/upgrade/upgrade_pre.py
@@ -1902,7 +1902,7 @@
 ## 4. 检查集群状态
 #def check_cluster_status(query_cur):
 #  # 4.1 检查是否非合并状态
-#  (desc, results) = query_cur.exec_query("""select count(1) from CDB_OB_MAJOR_COMPACTION where STATUS != 'IDLE'""")
+#  (desc, results) = query_cur.exec_query("""select count(1) from CDB_OB_MAJOR_COMPACTION where (GLOBAL_BROADCAST_SCN > LAST_SCN or STATUS != 'IDLE')""")
 #  if results[0][0] > 0 :
 #    fail_list.append('{0} tenant is merging, please check'.format(results[0][0]))
 #  logging.info('check cluster status success')
@@ -2059,6 +2059,28 @@
 #      else:
 #        logging.info('check backup destination success')
 #
+#def check_server_version(query_cur):
+#    sql = """select distinct(substring_index(build_version, '_', 1)) from __all_server""";
+#    (desc, results) = query_cur.exec_query(sql);
+#    if len(results) != 1:
+#      fail_list.append("servers build_version not match")
+#    else:
+#      logging.info("check server version success")
+#
+## 14. 检查server是否可服务
+#def check_observer_status(query_cur):
+#  (desc, results) = query_cur.exec_query("""select count(*) from oceanbase.__all_server where (start_service_time <= 0 or status != "active")""")
+#  if results[0][0] > 0 :
+#    fail_list.append('{0} observer not available , please check'.format(results[0][0]))
+#  logging.info('check observer status success')
+#
+## 15  检查schema是否刷新成功
+#def check_schema_status(query_cur):
+#  (desc, results) = query_cur.exec_query("""select if (a.cnt = b.cnt, 1, 0) as passed from (select count(*) as cnt from oceanbase.__all_virtual_server_schema_info where refreshed_schema_version > 1 and refreshed_schema_version % 8 = 0) as a join (select count(*) as cnt from oceanbase.__all_server join oceanbase.__all_tenant) as b""")
+#  if results[0][0] != 1 :
+#    fail_list.append('{0} schema not available, please check'.format(results[0][0]))
+#  logging.info('check schema status success')
+#
 ## last check of do_check, make sure no function execute after check_fail_list
 #def check_fail_list():
 #  if len(fail_list) != 0 :
@@ -2097,6 +2119,9 @@
 #      check_archive_job_exist(query_cur)
 #      check_archive_dest_exist(query_cur)
 #      check_backup_dest_exist(query_cur)
+#      check_observer_status(query_cur)
+#      check_schema_status(query_cur)
+#      check_server_version(query_cur)
 #      # all check func should execute before check_fail_list
 #      check_fail_list()
 #      modify_server_permanent_offline_time(cur)