sql Server 大量数据批量插入 并发 死锁 情况怎么解决啊 这个存储过程能否优化
以下 是存储过程,
其中 Tweeter,Tweets,TweetsCount都存在大量数据，最低千万级的
加了 nolock不行，大家还有什么好的解决办法啊

SQL code

ALTER PROC [dbo].[TweetsAddOrUpdate]@WebSiteId int,@TweeterId bigint,@WebTweetsId nvarchar(50),@SourceId bigint,@WebSourceId nvarchar(50),@Content nvarchar(4000),@CutWordStatus bit,@OriginalText nvarchar(4000),@ForwardCount int,@CommentCount int,@TweeterPostType nvarchar(100),@TweeterPostTime datetime,@TweetsType int,@Location nvarchar(50),@UpdateTime datetime,@TweetsImportance int,@ProvinceName nvarchar(50),@CityName nvarchar(50)asSET TRANSACTION ISOLATION LEVEL READ UNCOMMITTEDSET TRANSACTION ISOLATION LEVEL REPEATABLE READBEGIN TRANSACTION    declare @ProvinceId int    declare @cityId int    select @ProvinceId=CityId from City(nolock) where Name=@ProvinceName    select @cityId=CityId from City(nolock) where Name=@CityName and ParentId=@ProvinceId    DECLARE @TweetsId bigint        IF not exists (select TweetsId from Tweets(nolock)  where WebTweetsId=@WebTweetsId and WebSiteId=@WebSiteId)    begin    INSERT INTO [Tweets]               ([WebSiteId],[TweeterId],[WebTweetsId],[SourceId]               ,[WebSourceId],[Content],[OriginalText]               ,[ForwardCount],[CommentCount],[TweeterPostType]               ,[TweeterPostTime],[TweetsType],[Location]               ,[UpdateTime],TweetsImportance,ProvinceId,CityId)         VALUES               (@WebSiteId,@TweeterId,@WebTweetsId,@SourceId               ,@WebSourceId,@Content,@OriginalText               ,@ForwardCount,@CommentCount,@TweeterPostType               ,@TweeterPostTime,@TweetsType,@Location               ,getDate(),@TweetsImportance,@ProvinceId,@cityId)         SET @TweetsId=@@identity      end    else    begin        select @TweetsId=TweetsId from Tweets(nolock)  where WebTweetsId=@WebTweetsId and WebSiteId=@WebSiteId        update Tweets set ForwardCount=@ForwardCount,CommentCount=@CommentCount,                UpdateTime=getDate(),TweetsImportance=@TweetsImportance where TweetsId=@TweetsId    end       update Tweets set SourceId=@TweetsId where WebSourceId=@WebTweetsId        if exists (select TweetsId  from TweetsCounts(nolock)                where TweetsId=@TweetsId and CONVERT(nvarchar(10),UpdateTime,112)                =cONVERT(nvarchar(10),GETDATE(),112)                )    begin            update TweetsCounts set ForwardCount=@ForwardCount,CommentCount=@CommentCount where            CONVERT(nvarchar(10),UpdateTime,112)                =cONVERT(nvarchar(10),GETDATE(),112)                and TweetsId=@TweetsId    end    else    begin        INSERT INTO [TweetsCounts]               ([TweetsId]               ,[ForwardCount]               ,[CommentCount]               ,[UpdateTime])         VALUES               (@TweetsId,@ForwardCount,@CommentCount,GETDATE())    end     select @TweetsId    COMMIT TRANSACTION

[解决办法]
用bulkcopy，应该会好些
[解决办法]
小批量处理，化整为零。。。
在一个事务中忌讳操作大量的数据。 循环用小批量处理一批，提交一批。
[解决办法]
sqlbuckcopy自事性功能，大量理的class