diff --git a/api/lib/cmdb/ci_type.py b/api/lib/cmdb/ci_type.py
index 6f858af..3af4ebf 100644
--- a/api/lib/cmdb/ci_type.py
+++ b/api/lib/cmdb/ci_type.py
@@ -112,7 +112,7 @@ class CITypeManager(object):
     def delete(cls, type_id):
         ci_type = cls.check_is_existed(type_id)
 
-        if CI.get_by(type_id=type_id, first=True, to_dict=False):
+        if CI.get_by(type_id=type_id, first=True, to_dict=False) is not None:
             return abort(400, "cannot delete, because CI instance exists")
 
         for item in CITypeRelation.get_by(parent_id=type_id, to_dict=False):
diff --git a/api/lib/perm/acl/acl.py b/api/lib/perm/acl/acl.py
index 7bc183e..e40a9bd 100644
--- a/api/lib/perm/acl/acl.py
+++ b/api/lib/perm/acl/acl.py
@@ -120,12 +120,15 @@ def has_perm(resources, resource_type, perm):
     return decorator_has_perm
 
 
-def is_app_admin():
+def is_app_admin(app=None):
     if RoleEnum.CONFIG in session.get("acl", {}).get("parentRoles", []):
         return True
 
+    app = app or 'cmdb'
+    app_id = AppCache.get(app).id
+
     for role in session.get("acl", {}).get("parentRoles", []):
-        if RoleCache.get(role).is_app_admin:
+        if RoleCache.get_by_name(app_id, role).is_app_admin:
             return True
 
     return False
@@ -162,7 +165,7 @@ def role_required(role_name):
                 return
 
             if current_app.config.get("USE_ACL"):
-                if role_name not in session.get("acl", {}).get("parentRoles", []):
+                if role_name not in session.get("acl", {}).get("parentRoles", []) and not is_app_admin():
                     return abort(403, "Role {0} is required".format(role_name))
             return func(*args, **kwargs)
 
diff --git a/api/tasks/cmdb.py b/api/tasks/cmdb.py
index 357ddc0..36853eb 100644
--- a/api/tasks/cmdb.py
+++ b/api/tasks/cmdb.py
@@ -46,6 +46,8 @@ def ci_delete(ci_id):
 
 @celery.task(name="cmdb.ci_relation_cache", queue=CMDB_QUEUE)
 def ci_relation_cache(parent_id, child_id):
+    db.session.close()
+
     children = rd.get([parent_id], REDIS_PREFIX_CI_RELATION)[0]
     children = json.loads(children) if children is not None else {}