diff --git a/Bootstrap.DataAccess/Exceptions.cs b/Bootstrap.DataAccess/Exceptions.cs
index 8eaab64a..c46dea98 100644
--- a/Bootstrap.DataAccess/Exceptions.cs
+++ b/Bootstrap.DataAccess/Exceptions.cs
@@ -1,4 +1,4 @@
-using Longbow.Web.Mvc;
+using Longbow.Web.Mvc;
 using PetaPoco;
 using System;
 using System.Collections.Generic;
@@ -95,19 +95,24 @@ namespace Bootstrap.DataAccess
                 }
                 loopEx = loopEx.InnerException;
             }
-            DbManager.Create().Insert(new Exceptions
+            try
             {
-                AppDomainName = AppDomain.CurrentDomain.FriendlyName,
-                ErrorPage = errorPage,
-                UserId = additionalInfo?["UserId"],
-                UserIp = additionalInfo?["UserIp"],
-                ExceptionType = ex.GetType().FullName,
-                Message = ex.Message,
-                StackTrace = ex.StackTrace,
-                LogTime = DateTime.Now,
-                Category = category
-            });
-            ClearExceptions();
+                // 防止数据库写入操作失败后陷入死循环
+                DbManager.Create().Insert(new Exceptions
+                {
+                    AppDomainName = AppDomain.CurrentDomain.FriendlyName,
+                    ErrorPage = errorPage,
+                    UserId = additionalInfo?["UserId"],
+                    UserIp = additionalInfo?["UserIp"],
+                    ExceptionType = ex.GetType().FullName,
+                    Message = ex.Message,
+                    StackTrace = ex.StackTrace,
+                    LogTime = DateTime.Now,
+                    Category = category
+                });
+                ClearExceptions();
+            }
+            catch { }
             return true;
         }
 
diff --git a/UnitTest/Bootstrap.DataAccess/RollbackTest.cs b/UnitTest/Bootstrap.DataAccess/RollbackTest.cs
index 693df18c..e23f5e40 100644
--- a/UnitTest/Bootstrap.DataAccess/RollbackTest.cs
+++ b/UnitTest/Bootstrap.DataAccess/RollbackTest.cs
@@ -79,7 +79,7 @@ namespace Bootstrap.DataAccess
             var newUser = new User() { UserName = "U_Reset", DisplayName = "UnitTest", ApprovedTime = DateTime.Now, ApprovedBy = "System", Password = "1", Description = "UnitTest", RegisterTime = DateTime.Now };
             Assert.True(UserHelper.Save(newUser));
             Assert.True(UserHelper.ForgotPassword(new ResetUser() { DisplayName = "UnitTest", Reason = "UnitTest", ResetTime = DateTime.Now, UserName = newUser.UserName }));
-            Assert.ThrowsAny<Exception>(() => TestHelper.RevokeUserMapper(() => new User().ResetPassword(newUser.UserName, "123789")));
+            Assert.ThrowsAny<Exception>(() => TestHelper.RevokePocoMapper<User>(() => new User().ResetPassword(newUser.UserName, "123789")));
             Assert.True(UserHelper.Delete(new string[] { newUser.Id }));
         }
 
@@ -106,5 +106,11 @@ namespace Bootstrap.DataAccess
         {
             Assert.ThrowsAny<Exception>(() => TestHelper.RevokeMapper(() => new User().SaveByGroupId("1", new string[] { "1" })));
         }
+
+        [Fact]
+        public void Exceptions_Log()
+        {
+            TestHelper.RevokePocoMapper<Exceptions>(() => new Exceptions().Log(new Exception(), null));
+        }
     }
 }
diff --git a/UnitTest/TestHelper.cs b/UnitTest/TestHelper.cs
index 65675192..2435f7c9 100644
--- a/UnitTest/TestHelper.cs
+++ b/UnitTest/TestHelper.cs
@@ -103,10 +103,10 @@ namespace UnitTest
             }
         }
 
-        public static void RevokeUserMapper(Action callback)
+        public static void RevokePocoMapper<T>(Action callback)
         {
             var foo = new FooMapper();
-            Mappers.Register(typeof(User), foo);
+            Mappers.Register(typeof(T), foo);
             try { callback(); }
             catch (Exception ex) { throw ex; }
             finally