数据库死锁时触发触发器

我使用线程，当我提交数据时，我得到触发死锁。如何防止数据库死锁？触发检查是否存在行，如果存在，那么就回滚..数据库死锁时触发触发器

我读这一点，但它是没有帮助的太多：

http://www.sql-server-performance.com/2006/deadlocks/

http://blog.sqlauthority.com/2007/05/16/sql-server-fix-error-1205-transaction-process-id-was-deadlocked-on-resources-with-another-process-and-has-been-chosen-as-the-deadlock-victim-rerun-the-transaction/

如何避免这个错误？

代码：

advertismentsDao.Save(ad); 
advertismentsDao.CommitChanges();

，并承诺火灾这触发

ALTER TRIGGER [dbo].[TRG_ViolateAdvertisements] ON [dbo].[Advertisements] 
AFTER INSERT, UPDATE 
AS 
BEGIN 
    IF EXISTS (SELECT 1 FROM INSERTED ins JOIN dbo.Advertisements ad 
        ON ISNULL(ins.Price, 0) = ISNULL(ad.Price, 0) 
        AND ISNULL(ins.HollidayDuration, 0) = ISNULL(ad.HollidayDuration, 0) 
        AND ISNULL(ins.Name, 0) = ISNULL(ad.Name, 0) 
        AND ISNULL(ins.Description, 0) = ISNULL(ad.Description, 0) 
        AND ISNULL(ins.Cities_idCities, 0) = ISNULL(ad.Cities_idCities, 0) 
        AND ISNULL(ins.Areas_idAreas, 0) = ISNULL(ad.Areas_idAreas, 0) 
        AND ISNULL(ins.Countries_idCountries, 0) = ISNULL(ad.Countries_idCountries, 0) 
        AND ins.Agencies_idAgencies = ad.Agencies_idAgencies 
        --AND ins.Url = ad.Url 
        HAVING COUNT(1) > 1) 
    BEGIN 
     RAISERROR ('Unique constraint violation in dbo.Advertisements', 16, 1) 
     ROLLBACK TRAN; 
    END 
END

，但我得到的错误：

Transaction (Process ID 78) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
StackTrace:
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()
at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
at System.Data.SqlClient.SqlDataReader.ConsumeMetaData()
at System.Data.SqlClient.SqlDataReader.get_MetaData()
at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)
at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
at System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader()
at NHibernate.AdoNet.AbstractBatcher.ExecuteReader(IDbCommand cmd)
at NHibernate.Id.IdentityGenerator.InsertSelectDelegate.ExecuteAndExtract(IDbCommand insert, ISessionImplementor session)
at NHibernate.Id.Insert.AbstractReturningDelegate.PerformInsert(SqlCommandInfo insertSQL, ISessionImplementor session, IBinder binder)

来源

2012-02-01 senzacionale

任何想法如何防止死锁？ – senzacionale 2012-02-01 12:04:42

有大量关于分析和防止死锁的信息，包括SQL Server文档中的信息：http://msdn.microsoft.com/en-us/library/ms188246.aspx http://msdn.microsoft。 com/en-us/library/ms191242.aspx你的问题到底是什么？你只是说你发现的信息没有帮助，但你没有解释为什么。 – Pondlife 2012-02-01 12:09:51

你为什么试图通过触发器而不是唯一的约束来强制执行一个唯一的约束？ – 2012-02-01 12:28:34

使用唯一约束代替。

例如：

Alter Table Advertisements 
ADD Constraint Advertisements_UQ1 Unique (
    Price, 
    HollidayDestination, 
    Name, 
    Description, 
    Cities_idCities, 
    Areas_idAreas, 
    Countries_idCountries, 
    Agencies_idAgencies 
)

来源

2012-02-01 12:53:24 Ben

好主意Ben，thx – senzacionale 2012-02-02 06:09:05

数据库死锁时触发触发器

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