一个事务中的任何操作是回滚回滚以及。不这样做会破坏事务的原子性。鉴于您正在审计的活动正在回滚,很可能您确实希望无论如何都要回滚审计。
尽管如此,也有合法的情况下,当一个人需要有记录当前事务,如某些调试案范围以外的业务。有已知的解决方法,如使用event notifications为user configurable事件类,然后使用sp_trace_generateevent
导致事件通知activated procedure运行并记录审计。由于事件探查器事件是在事务作用域之外生成的,因此审核记录不会回滚。
:setvar dbname testdb
:on error exit
set nocount on;
use master;
if exists (
select * from sys.server_event_notifications
where name = N'audit')
begin
drop event notification audit on server;
end
go
if db_id('$(dbname)') is not null
begin
alter database [$(dbname)] set single_user with rollback immediate;
drop database [$(dbname)];
end
go
create database [$(dbname)];
go
alter authorization on database::[$(dbname)] to [sa];
go
use [$(dbname)];
go
create queue audit;
create service audit on queue audit (
[http://schemas.microsoft.com/SQL/Notifications/PostEventNotification]);
go
create table audit_table (
Time datetime not null,
TextData nvarchar(256) not null);
go
create procedure usp_audit
as
begin
declare @h uniqueidentifier, @mt sysname, @mb varbinary(max), @mx xml;
begin transaction;
receive top(1) @h = conversation_handle,
@mt = message_type_name,
@mb = message_body
from audit;
if (@mt = N'http://schemas.microsoft.com/SQL/Notifications/EventNotification')
begin
select @mx = cast(@mb as xml);
insert into audit_table (Time, TextData)
values (
@mx.value(N'(/EVENT_INSTANCE/PostTime)[1]', N'datetime'),
@mx.value(N'(/EVENT_INSTANCE/TextData)[1]', N'nvarchar(256)'));
end
else if (@mt = N'http://schemas.microsoft.com/SQL/ServiceBroker/Error'
or @mt = N'http://schemas.microsoft.com/SQL/ServiceBroker/EndDialog')
begin
end conversation @h;
end
commit
end
go
alter queue audit
with activation (
status = on,
procedure_name = usp_audit,
max_queue_readers = 1,
execute as owner);
go
create event notification audit
on server for USERCONFIGURABLE_0
to service N'audit', N'current database';
go
begin transaction;
exec sp_trace_generateevent 82, N'this was inserted from a rolled back';
rollback
go
waitfor delay '00:00:05';
select * from audit_table;
go
对不起,我的VB.net代码。我错过了'tx.Complete()'语句。但是,它永远不会去那条线。因为我总是在'cmd.ExecuteNonQuery()'方法后抛出异常。我想要的是回滚插入MY_TABLE中的记录,但是** NOT **回滚插入AUDIT_TABLE中的记录。 – 2011-03-04 00:39:01