{"id":372,"date":"2014-11-15T12:40:10","date_gmt":"2014-11-15T12:40:10","guid":{"rendered":"24b16fede9a67c9251d3e7c7161c83ac"},"modified":"2014-11-15T12:40:10","modified_gmt":"2014-11-15T12:40:10","slug":"","status":"publish","type":"post","link":"https:\/\/www.xiaobo.li\/notes\/archives\/372","title":{"rendered":"SQL Server\u6b7b\u9501\u603b\u7ed3"},"content":{"rendered":"
\n

\u5f53\u524d\u9501\u67e5\u770b\uff1a<\/span><\/p>\n

use master
\ngo<\/span><\/p>\n

--\u68c0\u7d22\u6b7b\u9501\u8fdb\u7a0b
\nselect spid, blocked, loginame, last_batch, status, cmd, hostname, program_name
\nfrom sysprocesses
\nwhere spid in
\n( select blocked from sysprocesses where blocked <> 0 ) or (blocked <>0)<\/span><\/p>\n

--\u6216\u8005\uff1a<\/span><\/p>\n

select request_session_id,OBJECT_NAME(resource_associated_entity_id) tableName from
\nsys.dm_tran_locks
\nwhere resource_type='OBJECT'<\/span><\/p>\n

--<\/span><\/p>\n

kill   \u8fdb\u7a0b\u53f7\uff08sp_lock\/sp_who\u67e5\u627e\u6b7b\u9501\u7684\u8fdb\u7a0b\u548c\u5bf9\u8c61\uff09 <\/span><\/span>

\nspid\u5c31\u662f\u9501\u4f4f\u8868\u7684\u8fdb\u7a0b<\/span>

\ntableName\u5c31\u662f\u88ab\u9501\u7684\u8868\u540d<\/span>

\n\u89e3\u9501<\/span>

\nkill [spid]<\/span><\/span><\/p>\n

 <\/p>\n

 <\/span>1. <\/span><\/span><\/strong>\u6b7b\u9501\u539f\u7406<\/span><\/strong><\/o:p><\/span><\/strong><\/p>\n

    <\/span><\/span><\/span>\u6839\u636e\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u5b9a\u4e49\uff1a\u6b7b\u9501\u662f\u6307\u5728\u4e00\u7ec4\u8fdb\u7a0b\u4e2d\u7684\u5404\u4e2a\u8fdb\u7a0b\u5747\u5360\u6709\u4e0d\u4f1a\u91ca\u653e\u7684\u8d44\u6e90\uff0c\u4f46\u56e0\u4e92\u76f8\u7533\u8bf7\u88ab\u5176\u4ed6\u8fdb\u7a0b\u6240\u7ad9\u7528\u4e0d\u4f1a\u91ca\u653e\u7684\u8d44\u6e90\u800c\u5904\u4e8e\u7684\u4e00\u79cd\u6c38\u4e45\u7b49\u5f85\u72b6\u6001\u3002<\/span><\/p>\n

    <\/span><\/span><\/span>\u6b7b\u9501\u7684\u56db\u4e2a\u5fc5\u8981\u6761\u4ef6\uff1a
\n<\/span>\u4e92\u65a5\u6761\u4ef6<\/span>(Mutual exclusion)<\/span>\uff1a\u8d44\u6e90\u4e0d\u80fd\u88ab\u5171\u4eab\uff0c\u53ea\u80fd\u7531\u4e00\u4e2a\u8fdb\u7a0b\u4f7f\u7528\u3002
\n<\/span>\u8bf7\u6c42\u4e0e\u4fdd\u6301\u6761\u4ef6<\/span>(Hold and wait)<\/span>\uff1a\u5df2\u7ecf\u5f97\u5230\u8d44\u6e90\u7684\u8fdb\u7a0b\u53ef\u4ee5\u518d\u6b21\u7533\u8bf7\u65b0\u7684\u8d44\u6e90\u3002
\n<\/span>\u975e\u5265\u593a\u6761\u4ef6<\/span>(No pre-emption)<\/span>\uff1a\u5df2\u7ecf\u5206\u914d\u7684\u8d44\u6e90\u4e0d\u80fd\u4ece\u76f8\u5e94\u7684\u8fdb\u7a0b\u4e2d\u88ab\u5f3a\u5236\u5730\u5265\u593a\u3002
\n<\/span>\u5faa\u73af\u7b49\u5f85\u6761\u4ef6<\/span>(Circular wait)<\/span>\uff1a\u7cfb\u7edf\u4e2d\u82e5\u5e72\u8fdb\u7a0b\u7ec4\u6210\u73af\u8def\uff0c\u8be5\u73af\u8def\u4e2d\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u5728\u7b49\u5f85\u76f8\u90bb\u8fdb\u7a0b\u6b63\u5360\u7528\u7684\u8d44\u6e90\u3002<\/span><\/p>\n

<\/o:p><\/span><\/p>\n

\u5bf9\u5e94\u5230<\/span>SQL Server<\/span>\u4e2d\uff0c\u5f53\u5728\u4e24\u4e2a\u6216\u591a\u4e2a\u4efb\u52a1\u4e2d\uff0c\u5982\u679c\u6bcf\u4e2a\u4efb\u52a1\u9501\u5b9a\u4e86\u5176\u4ed6\u4efb\u52a1\u8bd5\u56fe\u9501\u5b9a\u7684\u8d44\u6e90\uff0c\u6b64\u65f6\u4f1a\u9020\u6210\u8fd9\u4e9b\u4efb\u52a1\u6c38\u4e45\u963b\u585e\uff0c\u4ece\u800c\u51fa\u73b0\u6b7b\u9501\uff1b\u8fd9\u4e9b\u8d44\u6e90\u53ef\u80fd\u662f\uff1a\u5355\u884c<\/span>(RID<\/span>\uff0c\u5806\u4e2d\u7684\u5355\u884c<\/span>)<\/span>\u3001\u7d22\u5f15\u4e2d\u7684\u952e<\/span>(KEY<\/span>\uff0c\u884c\u9501<\/span>)<\/span>\u3001\u9875<\/span>(PAG<\/span>\uff0c<\/span>8KB)<\/span>\u3001\u533a\u7ed3\u6784<\/span>(EXT<\/span>\uff0c\u8fde\u7eed\u7684<\/span>8<\/span>\u9875<\/span>)<\/span>\u3001\u5806\u6216<\/span>B<\/span>\u6811<\/span>(HOBT) <\/span><\/span>\u3001\u8868<\/span>(TAB<\/span>\uff0c\u5305\u62ec\u6570\u636e\u548c\u7d22\u5f15<\/span>)<\/span>\u3001\u6587\u4ef6<\/span>(File<\/span>\uff0c\u6570\u636e\u5e93\u6587\u4ef6<\/span>)<\/span>\u3001\u5e94\u7528\u7a0b\u5e8f\u4e13\u7528\u8d44\u6e90<\/span>(APP)<\/span>\u3001\u5143\u6570\u636e<\/span>(METADATA)<\/span>\u3001\u5206\u914d\u5355\u5143<\/span>(Allocation_Unit)<\/span>\u3001\u6574\u4e2a\u6570\u636e\u5e93<\/span>(DB)<\/span>\u3002<\/span><\/span>\u4e00\u4e2a\u6b7b\u9501\u793a\u4f8b\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/span><\/p>\n

\n

\"\u70b9\u51fb\u67e5\u770b\u539f\u56fe\"<\/a>
\n    \u8bf4\u660e\uff1a<\/span>T1<\/span>\u3001<\/span>T2<\/span>\u8868\u793a\u4e24\u4e2a\u4efb\u52a1\uff1b<\/span>R1<\/span>\u548c<\/span>R2<\/span>\u8868\u793a\u4e24\u4e2a\u8d44\u6e90\uff1b\u7531\u8d44\u6e90\u6307\u5411\u4efb\u52a1\u7684\u7bad\u5934<\/span>(<\/span>\u5982<\/span>R1->T1<\/span>\uff0c<\/span>R2->T2)<\/span>\u8868\u793a\u8be5\u8d44\u6e90\u88ab\u6539\u4efb\u52a1\u6240\u6301\u6709\uff1b\u7531\u4efb\u52a1\u6307\u5411\u8d44\u6e90\u7684\u7bad\u5934<\/span>(<\/span>\u5982<\/span>T1->S2<\/span>\uff0c<\/span>T2->S1)<\/span>\u8868\u793a\u8be5\u4efb\u52a1\u6b63\u5728\u8bf7\u6c42\u5bf9\u5e94\u76ee\u6807\u8d44\u6e90\uff1b
\n<\/span>    \u5176\u6ee1\u8db3\u4e0a\u9762\u6b7b\u9501\u7684\u56db\u4e2a\u5fc5\u8981\u6761\u4ef6\uff1a
\n<\/span>(1).<\/span>\u4e92\u65a5\uff1a\u8d44\u6e90<\/span>S1<\/span>\u548c<\/span>S2<\/span>\u4e0d\u80fd\u88ab\u5171\u4eab\uff0c\u540c\u4e00\u65f6\u95f4\u53ea\u80fd\u7531\u4e00\u4e2a\u4efb\u52a1\u4f7f\u7528\uff1b
\n<\/span>(2).<\/span>\u8bf7\u6c42\u4e0e\u4fdd\u6301\u6761\u4ef6\uff1a<\/span>T1<\/span>\u6301\u6709<\/span>S1<\/span>\u7684\u540c\u65f6\uff0c\u8bf7\u6c42<\/span>S2<\/span>\uff1b<\/span>T2<\/span>\u6301\u6709<\/span>S2<\/span>\u7684\u540c\u65f6\u8bf7\u6c42<\/span>S1<\/span>\uff1b
\n<\/span>(3).<\/span>\u975e\u5265\u593a\u6761\u4ef6\uff1a<\/span>T1<\/span>\u65e0\u6cd5\u4ece<\/span>T2<\/span>\u4e0a\u5265\u593a<\/span>S2<\/span>\uff0c<\/span>T2<\/span>\u4e5f\u65e0\u6cd5\u4ece<\/span>T1<\/span>\u4e0a\u5265\u593a<\/span>S1<\/span>\uff1b
\n<\/span>(4).<\/span>\u5faa\u73af\u7b49\u5f85\u6761\u4ef6\uff1a\u4e0a\u56fe\u4e2d\u7684\u7bad\u5934\u6784\u6210\u73af\u8def\uff0c\u5b58\u5728\u5faa\u73af\u7b49\u5f85\u3002<\/span><\/p>\n

 <\/o:p><\/span><\/p>\n

2. <\/span><\/span><\/strong>\u6b7b\u9501\u6392\u67e5<\/span><\/strong><\/o:p><\/span><\/strong><\/p>\n

(1). <\/span><\/span>\u4f7f\u7528<\/span>SQL Server<\/span>\u7684\u7cfb\u7edf\u5b58\u50a8\u8fc7\u7a0b<\/span>sp_who<\/span>\u548c<\/span>sp_lock<\/span>\uff0c\u53ef\u4ee5\u67e5\u770b\u5f53\u524d\u6570\u636e\u5e93\u4e2d\u7684\u9501\u60c5\u51b5\uff1b\u8fdb\u800c\u6839\u636e<\/span>objectID(@objID)(SQL Server 2005)\/ object_name(@objID)(Sql Server 2000)<\/span>\u53ef\u4ee5\u67e5\u770b\u54ea\u4e2a\u8d44\u6e90\u88ab\u9501\uff0c\u7528<\/span>dbcc ld(@blk)<\/span>\uff0c\u53ef\u4ee5\u67e5\u770b\u6700\u540e\u4e00\u6761\u53d1\u751f\u7ed9<\/span>SQL Server<\/span>\u7684<\/span>Sql<\/span>\u8bed\u53e5\uff1b<\/span><\/p>\n

<\/p>\n

CREATE Table #Who(spid int,\r\n\r\n    ecid int,\r\n\r\n    status nvarchar(50),\r\n\r\n    loginname nvarchar(50),\r\n\r\n    hostname nvarchar(50),\r\n\r\n    blk int,\r\n\r\n    dbname nvarchar(50),\r\n\r\n    cmd nvarchar(50),\r\n\r\n    request_ID int);\r\n\r\n\r\n\r\nCREATE Table #Lock(spid int,\r\n\r\n    dpid int,\r\n\r\n    objid int,\r\n\r\n    indld int,\r\n\r\n    [Type] nvarchar(20),\r\n\r\n    Resource nvarchar(50),\r\n\r\n    Mode nvarchar(10),\r\n\r\n    Status nvarchar(10)\r\n\r\n);\r\n\r\n\r\n\r\nINSERT INTO #Who\r\n\r\n    EXEC sp_who active  --\u770b\u54ea\u4e2a\u5f15\u8d77\u7684\u963b\u585e\uff0cblk \r\n\r\nINSERT INTO #Lock\r\n\r\n    EXEC sp_lock  --\u770b\u9501\u4f4f\u4e86\u90a3\u4e2a\u8d44\u6e90id\uff0cobjid \r\n\r\n\r\n\r\nDECLARE @DBName nvarchar(20);\r\n\r\nSET @DBName='NameOfDataBase'\r\n\r\n\r\n\r\nSELECT #Who.* FROM #Who WHERE dbname=@DBName\r\n\r\nSELECT #Lock.* FROM #Lock\r\n\r\n    JOIN #Who\r\n\r\n        ON #Who.spid=#Lock.spid\r\n\r\n            AND dbname=@DBName;\r\n\r\n\r\n\r\n--\u6700\u540e\u53d1\u9001\u5230SQL Server\u7684\u8bed\u53e5\r\n\r\nDECLARE crsr Cursor FOR\r\n\r\n    SELECT blk FROM #Who WHERE dbname=@DBName AND blk<>0;\r\n\r\nDECLARE @blk int;\r\n\r\nopen crsr;\r\n\r\nFETCH NEXT FROM crsr INTO @blk;\r\n\r\nWHILE (@@FETCH_STATUS = 0)\r\n\r\nBEGIN;\r\n\r\n    dbcc inputbuffer(@blk);\r\n\r\n    FETCH NEXT FROM crsr INTO @blk;\r\n\r\nEND;\r\n\r\nclose crsr;\r\n\r\nDEALLOCATE crsr;\r\n\r\n\r\n\r\n--\u9501\u5b9a\u7684\u8d44\u6e90\r\n\r\nSELECT #Who.spid,hostname,objid,[type],mode,object_name(objid) as objName FROM #Lock\r\n\r\n    JOIN #Who\r\n\r\n        ON #Who.spid=#Lock.spid\r\n\r\n            AND dbname=@DBName\r\n\r\n    WHERE objid<>0;\r\n\r\n\r\n\r\nDROP Table #Who;\r\n\r\nDROP Table #Lock;<\/pre>\n
\n(2). <\/span><\/span>\u4f7f\u7528<\/span> <\/span>SQL Server Profiler <\/span><\/span>\u5206\u6790\u6b7b\u9501<\/span>: <\/span><\/span>\u5c06<\/span> <\/span>Deadlock graph <\/span><\/span>\u4e8b\u4ef6\u7c7b\u6dfb\u52a0\u5230\u8ddf\u8e2a\u3002\u6b64\u4e8b\u4ef6\u7c7b\u4f7f\u7528\u6b7b\u9501\u6d89\u53ca\u5230\u7684\u8fdb\u7a0b\u548c\u5bf9\u8c61\u7684<\/span> <\/span>XML <\/span><\/span>\u6570\u636e\u586b\u5145\u8ddf\u8e2a\u4e2d\u7684<\/span> <\/span>TextData <\/span><\/span>\u6570\u636e\u5217\u3002<\/span>SQL Server <\/span><\/span>\u4e8b\u4ef6\u63a2\u67e5\u5668<\/span> <\/span>\u53ef\u4ee5\u5c06<\/span> <\/span>XML <\/span><\/span>\u6587\u6863\u63d0\u53d6\u5230\u6b7b\u9501<\/span> <\/span>XML (.xdl) <\/span><\/span>\u6587\u4ef6\u4e2d\uff0c\u4ee5\u540e\u53ef\u5728<\/span> <\/span>SQL Server Management Studio <\/span><\/span>\u4e2d\u67e5\u770b\u8be5\u6587\u4ef6\u3002<\/span><\/p>\n
 <\/o:p><\/span><\/p>\n
3. <\/span><\/span><\/strong>\u907f\u514d\u6b7b\u9501<\/span><\/strong><\/o:p><\/span><\/strong><\/p>\n
    <\/span><\/span><\/span>\u4e0a\u9762<\/span>1<\/span>\u4e2d\u5217\u51fa\u4e86\u6b7b\u9501\u7684\u56db\u4e2a\u5fc5\u8981\u6761\u4ef6\uff0c\u6211\u4eec\u53ea\u8981\u60f3\u529e\u6cd5\u7834\u5176\u4e2d\u7684\u4efb\u610f\u4e00\u4e2a\u6216\u591a\u4e2a\u6761\u4ef6\uff0c\u5c31\u53ef\u4ee5\u907f\u514d\u6b7b\u9501\u53d1\u751f\uff0c\u4e00\u822c\u6709\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5<\/span>(FROM Sql Server 2005<\/span>\u8054\u673a\u4e1b\u4e66<\/span>)<\/span>\uff1a
\n<\/span>(1).<\/span><\/strong>\u6309\u540c\u4e00\u987a\u5e8f\u8bbf\u95ee\u5bf9\u8c61\u3002<\/span><\/strong>(<\/span>\u6ce8\uff1a\u907f\u514d\u51fa\u73b0\u5faa\u73af<\/span>)
\n<\/span>(2).<\/span><\/strong>\u907f\u514d\u4e8b\u52a1\u4e2d\u7684\u7528\u6237\u4ea4\u4e92\u3002<\/span><\/strong>(<\/span>\u6ce8\uff1a\u51cf\u5c11\u6301\u6709\u8d44\u6e90\u7684\u65f6\u95f4\uff0c\u8f83\u5c11\u9501\u7ade\u4e89<\/span>)
\n<\/span>(3).<\/span><\/strong>\u4fdd\u6301\u4e8b\u52a1\u7b80\u77ed\u5e76\u5904\u4e8e\u4e00\u4e2a\u6279\u5904\u7406\u4e2d\u3002<\/span><\/strong>(<\/span>\u6ce8\uff1a\u540c<\/span>(2)<\/span>\uff0c\u51cf\u5c11\u6301\u6709\u8d44\u6e90\u7684\u65f6\u95f4<\/span>)
\n<\/span>(4).<\/span><\/strong>\u4f7f\u7528\u8f83\u4f4e\u7684\u9694\u79bb\u7ea7\u522b\u3002<\/span><\/strong>(<\/span>\u6ce8\uff1a\u4f7f\u7528\u8f83\u4f4e\u7684\u9694\u79bb\u7ea7\u522b\uff08\u4f8b\u5982\u5df2\u63d0\u4ea4\u8bfb\uff09\u6bd4\u4f7f\u7528\u8f83\u9ad8\u7684\u9694\u79bb\u7ea7\u522b\uff08\u4f8b\u5982\u53ef\u5e8f\u5217\u5316\uff09\u6301\u6709\u5171\u4eab\u9501\u7684\u65f6\u95f4\u66f4\u77ed\uff0c\u51cf\u5c11\u9501\u7ade\u4e89<\/span>)
\n<\/span>(5).<\/span><\/strong>\u4f7f\u7528\u57fa\u4e8e\u884c\u7248\u672c\u63a7\u5236\u7684\u9694\u79bb\u7ea7\u522b<\/span><\/strong>\uff1a<\/span>2005<\/span>\u4e2d\u652f\u6301\u5feb\u7167\u4e8b\u52a1\u9694\u79bb\u548c\u6307\u5b9a<\/span>READ_COMMITTED<\/span>\u9694\u79bb\u7ea7\u522b\u7684\u4e8b\u52a1\u4f7f\u7528\u884c\u7248\u672c\u63a7\u5236\uff0c\u53ef\u4ee5\u5c06\u8bfb\u4e0e\u5199\u64cd\u4f5c\u4e4b\u95f4\u53d1\u751f\u7684\u6b7b\u9501\u51e0\u7387\u964d\u81f3\u6700\u4f4e\uff1a
\n<\/span>SET ALLOW_SNAPSHOT_ISOLATION ON --<\/span>\u4e8b\u52a1\u53ef\u4ee5\u6307\u5b9a<\/span> <\/span>SNAPSHOT <\/span><\/span>\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b<\/span>;
\n<\/span>SET READ_COMMITTED_SNAPSHOT ON  <\/span><\/span>--<\/span>\u6307\u5b9a<\/span> <\/span>READ_COMMITTED <\/span><\/span>\u9694\u79bb\u7ea7\u522b\u7684\u4e8b\u52a1\u5c06\u4f7f\u7528\u884c\u7248\u672c\u63a7\u5236\u800c\u4e0d\u662f\u9501\u5b9a\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b<\/span>(<\/span>\u6ca1\u6709\u5f00\u542f\u6b64\u9009\u9879\uff0c\u6ca1\u6709\u52a0<\/span>with nolock<\/span>\u63d0\u793a<\/span>)<\/span>\uff0c<\/span>SELECT<\/span>\u8bed\u53e5\u4f1a\u5bf9\u8bf7\u6c42\u7684\u8d44\u6e90\u52a0<\/span>S<\/span>\u9501<\/span>(<\/span>\u5171\u4eab\u9501<\/span>)<\/span>\uff1b\u800c\u5f00\u542f\u4e86\u6b64\u9009\u9879\u540e\uff0c<\/span>SELECT<\/span>\u4e0d\u4f1a\u5bf9\u8bf7\u6c42\u7684\u8d44\u6e90\u52a0<\/span>S<\/span>\u9501\u3002
\n<\/span>\u6ce8\u610f\uff1a<\/span><\/strong>\u8bbe\u7f6e<\/span> <\/span>READ_COMMITTED_SNAPSHOT <\/span><\/span>\u9009\u9879\u65f6\uff0c\u6570\u636e\u5e93\u4e2d\u53ea\u5141\u8bb8\u5b58\u5728\u6267\u884c<\/span> <\/span>ALTER DATABASE <\/span><\/span>\u547d\u4ee4\u7684\u8fde\u63a5\u3002\u5728<\/span> <\/span>ALTER DATABASE <\/span><\/span>\u5b8c\u6210\u4e4b\u524d\uff0c\u6570\u636e\u5e93\u4e2d\u51b3\u4e0d\u80fd\u6709\u5176\u4ed6\u6253\u5f00\u7684\u8fde\u63a5\u3002\u6570\u636e\u5e93\u4e0d\u5fc5\u4e00\u5b9a\u8981\u5904\u4e8e\u5355\u7528\u6237\u6a21\u5f0f\u4e2d\u3002
\n<\/span>(6).<\/span><\/strong>\u4f7f\u7528\u7ed1\u5b9a\u8fde\u63a5<\/span><\/strong>\u3002<\/span>(<\/span>\u6ce8\uff1a\u7ed1\u5b9a\u4f1a\u8bdd\u6709\u5229\u4e8e\u5728\u540c\u4e00\u53f0\u670d\u52a1\u5668\u4e0a\u7684\u591a\u4e2a\u4f1a\u8bdd\u4e4b\u95f4\u534f\u8c03\u64cd\u4f5c\u3002\u7ed1\u5b9a\u4f1a\u8bdd\u5141\u8bb8\u4e00\u4e2a\u6216\u591a\u4e2a\u4f1a\u8bdd\u5171\u4eab\u76f8\u540c\u7684\u4e8b\u52a1\u548c\u9501<\/strong><\/span>(<\/span><\/strong>\u4f46\u6bcf\u4e2a\u56de\u8bdd\u4fdd\u7559\u5176\u81ea\u5df1\u7684\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b<\/span>)<\/span><\/strong>\uff0c\u5e76\u53ef\u4ee5\u4f7f\u7528\u540c\u4e00\u6570\u636e\uff0c\u800c\u4e0d\u4f1a\u6709\u9501\u51b2\u7a81\u3002\u53ef\u4ee5\u4ece\u540c\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\u5185\u7684\u591a\u4e2a\u4f1a\u8bdd\u4e2d\u521b\u5efa\u7ed1\u5b9a\u4f1a\u8bdd\uff0c\u4e5f\u53ef\u4ee5\u4ece\u5305\u542b\u4e0d\u540c\u4f1a\u8bdd\u7684\u591a\u4e2a\u5e94\u7528\u7a0b\u5e8f\u4e2d\u521b\u5efa\u7ed1\u5b9a\u4f1a\u8bdd\u3002\u5728\u4e00\u4e2a\u4f1a\u8bdd\u4e2d\u5f00\u542f\u4e8b\u52a1<\/span>(begin tran)<\/span>\u540e\uff0c\u8c03\u7528<\/span>exec sp_getbindtoken @Token out;<\/span>\u6765\u53d6\u5f97<\/span>Token<\/span>\uff0c\u7136\u540e\u4f20\u5165\u53e6\u4e00\u4e2a\u4f1a\u8bdd\u5e76\u6267\u884c<\/span>EXEC sp_bindsession @Token<\/span>\u6765\u8fdb\u884c\u7ed1\u5b9a<\/span>(<\/span>\u6700\u540e\u7684\u793a\u4f8b\u4e2d\u6f14\u793a\u4e86\u7ed1\u5b9a\u8fde\u63a5<\/span>)<\/span>\u3002<\/span><\/p>\n
 <\/o:p><\/span><\/p>\n
4. <\/span><\/span><\/strong>\u6b7b\u9501\u5904\u7406\u65b9\u6cd5\uff1a<\/span><\/strong><\/o:p><\/span><\/strong><\/p>\n
(1). <\/span><\/span>\u6839\u636e<\/span>2<\/span>\u4e2d\u63d0\u4f9b\u7684<\/span>sql<\/span>\uff0c\u67e5\u770b\u90a3\u4e2a<\/span>spid<\/span>\u5904\u4e8e<\/span>wait<\/span>\u72b6\u6001\uff0c\u7136\u540e\u7528<\/span>kill spid<\/span><\/strong>\u6765\u5e72\u6389<\/span>(<\/span>\u5373\u7834\u574f\u6b7b\u9501\u7684\u7b2c\u56db\u4e2a\u5fc5\u8981\u6761\u4ef6<\/span>:<\/span>\u5faa\u73af\u7b49\u5f85<\/span>)<\/span>\uff1b\u5f53\u7136\u8fd9\u53ea\u662f\u4e00\u79cd\u4e34\u65f6\u89e3\u51b3\u65b9\u6848\uff0c\u6211\u4eec\u603b\u4e0d\u80fd\u5728\u9047\u5230\u6b7b\u9501\u5c31\u5728\u7528\u6237\u7684\u751f\u4ea7\u73af\u5883\u4e0a\u6392\u67e5\u6b7b\u9501\u3001<\/span>Kill sp<\/span>\uff0c\u6211\u4eec\u5e94\u8be5\u8003\u8651\u5982\u4f55\u53bb\u907f\u514d\u6b7b\u9501\u3002<\/span><\/p>\n
(2). <\/span><\/span>\u4f7f\u7528<\/span>SET LOCK_TIMEOUT timeout_period(<\/span>\u5355\u4f4d\u4e3a\u6beb\u79d2<\/span>)<\/span>\u6765\u8bbe\u5b9a\u9501\u8bf7\u6c42\u8d85\u65f6<\/strong>\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6570\u636e\u5e93\u6ca1\u6709\u8d85\u65f6\u671f\u9650<\/span>(timeout_period<\/span>\u503c\u4e3a<\/span>-1<\/span>\uff0c\u53ef\u4ee5\u7528<\/span>SELECT @@LOCK_TIMEOUT<\/span>\u6765\u67e5\u770b\u8be5\u503c\uff0c\u5373\u65e0\u9650\u671f\u7b49\u5f85<\/span>)<\/span>\u3002\u5f53\u8bf7\u6c42\u9501\u8d85\u8fc7<\/span>timeout_period<\/span>\u65f6\uff0c\u5c06\u8fd4\u56de\u9519\u8bef\u3002<\/span>timeout_period<\/span>\u503c\u4e3a<\/span>0<\/span>\u65f6\u8868\u793a\u6839\u672c\u4e0d\u7b49\u5f85\uff0c\u4e00\u9047\u5230\u9501\u5c31\u8fd4\u56de\u6d88\u606f\u3002\u8bbe\u7f6e\u9501\u8bf7\u6c42\u8d85\u65f6\uff0c\u7834\u73af\u4e86\u6b7b\u9501\u7684\u7b2c\u4e8c\u4e2a\u5fc5\u8981\u6761\u4ef6<\/span>(<\/span>\u8bf7\u6c42\u4e0e\u4fdd\u6301\u6761\u4ef6<\/span>)<\/span>\u3002<\/span><\/p>\n
\u670d\u52a1\u5668: \u6d88\u606f <\/span>1222<\/span>\uff0c\u7ea7\u522b <\/span>16<\/span>\uff0c\u72b6\u6001 <\/span>50<\/span>\uff0c\u884c <\/span>1<\/span>
\n\u5df2\u8d85\u8fc7\u4e86\u9501\u8bf7\u6c42\u8d85\u65f6\u65f6\u6bb5\u3002<\/span><\/div>\n
\n
\n
<\/o:p><\/span><\/p>\n
(3). SQL Server<\/span>\u5185\u90e8\u6709\u4e00\u4e2a\u9501\u76d1\u89c6\u5668\u7ebf\u7a0b\u6267\u884c\u6b7b\u9501\u68c0\u67e5<\/strong>\uff0c\u9501\u76d1\u89c6\u5668\u5bf9\u7279\u5b9a\u7ebf\u7a0b\u542f\u52a8\u6b7b\u9501\u641c\u7d22\u65f6\uff0c\u4f1a\u6807\u8bc6\u7ebf\u7a0b\u6b63\u5728\u7b49\u5f85\u7684\u8d44\u6e90\uff1b\u7136\u540e\u67e5\u627e\u7279\u5b9a\u8d44\u6e90\u7684\u6240\u6709\u8005\uff0c\u5e76\u9012\u5f52\u5730\u7ee7\u7eed\u6267\u884c\u5bf9\u90a3\u4e9b\u7ebf\u7a0b\u7684\u6b7b\u9501\u641c\u7d22\uff0c\u76f4\u5230\u627e\u5230\u4e00\u4e2a\u6784\u6210\u6b7b\u9501\u6761\u4ef6\u7684\u5faa\u73af\u3002\u68c0\u6d4b\u5230\u6b7b\u9501\u540e\uff0c\u6570\u636e\u5e93\u5f15\u64ce<\/span> <\/span>\u9009\u62e9\u8fd0\u884c\u56de\u6eda\u5f00\u9500\u6700\u5c0f\u7684\u4e8b\u52a1\u7684\u4f1a\u8bdd\u4f5c\u4e3a\u6b7b\u9501\u727a\u7272\u54c1\uff0c\u8fd4\u56de<\/span>1205 <\/span><\/span>\u9519\u8bef\uff0c\u56de\u6eda\u6b7b\u9501\u727a\u7272\u54c1\u7684\u4e8b\u52a1\u5e76\u91ca\u653e\u8be5\u4e8b\u52a1\u6301\u6709\u7684\u6240\u6709\u9501\uff0c\u4f7f\u5176\u4ed6\u7ebf\u7a0b\u7684\u4e8b\u52a1\u53ef\u4ee5\u8bf7\u6c42\u8d44\u6e90\u5e76\u7ee7\u7eed\u8fd0\u884c\u3002<\/span> <\/p>\n
\n
 <\/o:p><\/span><\/p>\n
5. <\/span><\/span><\/strong>\u4e24\u4e2a\u6b7b\u9501\u793a\u4f8b\u53ca\u89e3\u51b3\u65b9\u6cd5<\/span><\/strong><\/o:p><\/span><\/strong><\/p>\n
5.1 SQL<\/span><\/strong>\u6b7b\u9501<\/span><\/o:p><\/span><\/strong><\/p>\n
(1). <\/span><\/strong><\/span>\u6d4b\u8bd5\u7528\u7684\u57fa\u7840\u6570\u636e\uff1a<\/strong><\/span><\/p>\n
\"\"CREATE<\/span> <\/span>TABLE<\/span> Lock1(C1 <\/span>int<\/span> <\/span>default<\/span>(<\/span>0<\/span>));
\n\"\"<\/span>CREATE<\/span> <\/span>TABLE<\/span> Lock2(C1 <\/span>int<\/span> <\/span>default<\/span>(<\/span>0<\/span>));
\n\"\"<\/span>INSERT<\/span> <\/span>INTO<\/span> Lock1 <\/span>VALUES<\/span>(<\/span>1<\/span>);
\n\"\"<\/span>INSERT<\/span> <\/span>INTO<\/span> Lock2 <\/span>VALUES<\/span>(<\/span>1<\/span>);<\/span><\/div>\n
\n
\n
<\/o:p><\/span><\/p>\n
(2). <\/span><\/span>\u5f00\u4e24\u4e2a\u67e5\u8be2\u7a97\u53e3\uff0c\u5206\u522b\u6267\u884c\u4e0b\u9762\u4e24\u6bb5<\/span><\/strong>sql<\/strong> <\/p>\n
\n
\"\"--<\/span>Query 1<\/span>
\n\"\"<\/span>Begin<\/span> <\/span>Tran<\/span>
\n\"\"  <\/span>Update<\/span> Lock1 <\/span>Set<\/span> C1<\/span>=<\/span>C1<\/span>+<\/span>1<\/span>;
\n\"\"  <\/span>WaitFor<\/span> Delay <\/span>'<\/span>00:01:00<\/span>'<\/span>;
\n\"\"  <\/span>SELECT<\/span> <\/span>*<\/span> <\/span>FROM<\/span> Lock2
\n\"\"<\/span>Rollback<\/span> <\/span>Tran<\/span>;<\/span><\/div>\n
 <\/p>\n
\"\"--<\/span>Query 2<\/span>
\n\"\"<\/span>Begin<\/span> <\/span>Tran<\/span>
\n\"\"  <\/span>Update<\/span> Lock2 <\/span>Set<\/span> C1<\/span>=<\/span>C1<\/span>+<\/span>1<\/span>;
\n\"\"  <\/span>WaitFor<\/span> Delay <\/span>'<\/span>00:01:00<\/span>'<\/span>;
\n\"\"  <\/span>SELECT<\/span> <\/span>*<\/span> <\/span>FROM<\/span> Lock1
\n\"\"<\/span>Rollback<\/span> <\/span>Tran<\/span>;<\/span><\/div>\n
 <\/p>\n
\u4e0a\u9762\u7684<\/span>SQL<\/span>\u4e2d\u6709\u4e00\u53e5<\/span>WaitFor Delay '00:01:00'<\/span>\uff0c\u7528\u4e8e\u7b49\u5f85<\/span>1<\/span>\u5206\u949f\uff0c\u4ee5\u65b9\u4fbf\u67e5\u770b\u9501\u7684\u60c5\u51b5\u3002<\/span><\/p>\n
(3). <\/span><\/span>\u67e5\u770b\u9501\u60c5\u51b5<\/span><\/strong><\/p>\n
\u5728\u6267\u884c\u4e0a\u9762\u7684<\/span>WaitFor<\/span>\u8bed\u53e5\u671f\u95f4\uff0c\u6267\u884c\u7b2c\u4e8c\u8282\u4e2d\u63d0\u4f9b\u7684\u8bed\u53e5\u6765\u67e5\u770b\u9501\u4fe1\u606f\uff1a<\/span><\/p>\n
\n
\n
\"\u70b9\u51fb\u67e5\u770b\u539f\u56fe\"<\/a>Query1<\/span>\u4e2d\uff0c\u6301\u6709<\/span>Lock1<\/span>\u4e2d\u7b2c\u4e00\u884c<\/span>(<\/span>\u8868\u4e2d\u53ea\u6709\u4e00\u884c\u6570\u636e<\/span>)<\/span>\u7684\u884c\u6392\u4ed6\u9501<\/span>(RID:X)<\/span>\uff0c\u5e76\u6301\u6709\u8be5\u884c\u6240\u5728\u9875\u7684\u610f\u5411\u66f4\u65b0\u9501<\/span>(PAG:IX)<\/span>\u3001\u8be5\u8868\u7684\u610f\u5411\u66f4\u65b0\u9501<\/span>(TAB:IX)<\/span>\uff1b<\/span>Query2<\/span>\u4e2d\uff0c\u6301\u6709<\/span>Lock2<\/span>\u4e2d\u7b2c\u4e00\u884c<\/span>(<\/span>\u8868\u4e2d\u53ea\u6709\u4e00\u884c\u6570\u636e<\/span>)<\/span>\u7684\u884c\u6392\u4ed6\u9501<\/span>(RID:X)<\/span>\uff0c\u5e76\u6301\u6709\u8be5\u884c\u6240\u5728\u9875\u7684\u610f\u5411\u66f4\u65b0\u9501<\/span>(PAG:IX)<\/span>\u3001\u8be5\u8868\u7684\u610f\u5411\u66f4\u65b0\u9501<\/span>(TAB:IX)<\/span>\uff1b<\/span><\/p>\n
\u6267\u884c\u5b8c<\/span>Waitfor<\/span>\uff0c<\/span>Query1<\/span>\u67e5\u8be2<\/span>Lock2<\/span>\uff0c\u8bf7\u6c42\u5728\u8d44\u6e90\u4e0a\u52a0<\/span>S<\/span>\u9501\uff0c\u4f46\u8be5\u884c\u5df2\u7ecf\u88ab<\/span>Query2<\/span>\u52a0\u4e0a\u4e86<\/span>X<\/span>\u9501\uff1b<\/span>Query2<\/span>\u67e5\u8be2<\/span>Lock1<\/span>\uff0c\u8bf7\u6c42\u5728\u8d44\u6e90\u4e0a\u52a0<\/span>S<\/span>\u9501\uff0c\u4f46\u8be5\u884c\u5df2\u7ecf\u88ab<\/span>Query1<\/span>\u52a0\u4e0a\u4e86<\/span>X<\/span>\u9501\uff1b\u4e8e\u662f\u4e24\u4e2a\u67e5\u8be2\u6301\u6709\u8d44\u6e90\u5e76\u4e92\u4e0d\u76f8\u8ba9\uff0c\u6784\u6210\u6b7b\u9501\u3002<\/span><\/p>\n
(4). <\/span><\/span><\/strong>\u89e3\u51b3\u529e\u6cd5<\/span><\/o:p><\/span><\/strong><\/p>\n
a). <\/span>SQL Server<\/strong><\/span>\u81ea\u52a8\u9009\u62e9\u4e00\u6761<\/span>SQL<\/span><\/strong>\u4f5c\u6b7b\u9501\u727a\u7272\u54c1<\/span><\/strong>\uff1a\u8fd0\u884c\u5b8c\u4e0a\u9762\u7684\u4e24\u4e2a\u67e5\u8be2\u540e\uff0c\u6211\u4eec\u4f1a\u53d1\u73b0\u6709\u4e00\u6761<\/span>SQL<\/span>\u80fd\u6b63\u5e38\u6267\u884c\u5b8c\u6bd5\uff0c\u800c\u53e6\u4e00\u4e2a<\/span>SQL<\/span>\u5219\u62a5\u5982\u4e0b\u9519\u8bef\uff1a<\/span><\/p>\n
\u670d\u52a1\u5668: \u6d88\u606f <\/span>1205<\/span>\uff0c\u7ea7\u522b <\/span>13<\/span>\uff0c\u72b6\u6001 <\/span>50<\/span>\uff0c\u884c <\/span>1<\/span>
\n\u4e8b\u52a1\uff08\u8fdb\u7a0b ID  xx\uff09\u4e0e\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u5df2\u88ab\u6b7b\u9501\u5728  lock \u8d44\u6e90\u4e0a\uff0c\u4e14\u8be5\u4e8b\u52a1\u5df2\u88ab\u9009\u4f5c\u6b7b\u9501\u727a\u7272\u54c1\u3002\u8bf7\u91cd\u65b0\u8fd0\u884c\u8be5\u4e8b\u52a1\u3002<\/span><\/div>\n
\n
\u8fd9\u5c31\u662f\u4e0a\u9762\u7b2c\u56db\u8282\u4e2d\u4ecb\u7ecd\u7684\u9501\u76d1\u89c6\u5668<\/strong>\u5e72\u6d3b\u4e86\u3002<\/span><\/p>\n
b). <\/span><\/span>\u6309\u540c\u4e00\u987a\u5e8f\u8bbf\u95ee\u5bf9\u8c61\uff1a<\/span><\/strong>\u98a0\u5012\u4efb\u610f\u4e00\u6761<\/span>SQL<\/span>\u4e2d\u7684<\/span>Update<\/span>\u4e0e<\/span>SELECT<\/span>\u8bed\u53e5\u7684\u987a\u5e8f\u3002\u4f8b\u5982\u4fee\u6539\u7b2c\u4e8c\u6761<\/span>SQL<\/span>\u6210\u5982\u4e0b\uff1a<\/span><\/p>\n
\"\"--<\/span>Query2<\/span>
\n\"\"<\/span>Begin<\/span> <\/span>Tran<\/span>
\n\"\"  <\/span>SELECT<\/span> <\/span>*<\/span> <\/span>FROM<\/span> Lock1<\/span>--<\/span>\u5728Lock1\u4e0a\u7533\u8bf7S\u9501<\/span>
\n\"\"<\/span>  <\/span>WaitFor<\/span> Delay <\/span>'<\/span>00:01:00<\/span>'<\/span>;
\n\"\"  <\/span>Update<\/span> Lock2 <\/span>Set<\/span> C1<\/span>=<\/span>C1<\/span>+<\/span>1<\/span>;<\/span>--<\/span>Lock2:RID:X<\/span>
\n\"\"<\/span>Rollback<\/span> <\/span>Tran<\/span>;<\/span><\/div>\n
\n
\n
\n
\u5f53\u7136\u8fd9\u6837\u4fee\u6539\u4e5f\u662f\u6709\u4ee3\u4ef7\u7684\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u7b2c\u4e00\u6761<\/span>SQL<\/span>\u6267\u884c\u5b8c\u6bd5\u4e4b\u524d\uff0c\u7b2c\u4e8c\u6761<\/span>SQL<\/span>\u4e00\u76f4\u5904\u4e8e\u963b\u585e\u72b6\u6001\u3002\u5355\u72ec\u6267\u884c<\/span>Query1<\/span>\u6216<\/span>Query2<\/span>\u9700\u8981\u7ea6<\/span>1<\/span>\u5206\u949f\uff0c\u4f46\u5982\u679c\u5f00\u59cb\u6267\u884c<\/span>Query1<\/span>\u65f6\uff0c\u9a6c\u4e0a\u540c\u65f6\u6267\u884c<\/span>Query2<\/span>\uff0c\u5219<\/span>Query2<\/span>\u9700\u8981<\/span>2<\/span>\u5206\u949f\u624d\u80fd\u6267\u884c\u5b8c\uff1b\u8fd9\u79cd\u6309\u987a\u5e8f\u8bf7\u6c42\u8d44\u6e90\u4ece\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u964d\u4f4e\u4e86\u5e76\u53d1\u6027\u3002<\/strong><\/span> <\/p>\n
\n
c). <\/span>SELECT<\/strong><\/span>\u8bed\u53e5\u52a0<\/span>With(NoLock)<\/span><\/strong>\u63d0\u793a<\/span><\/strong>\uff1a\u9ed8\u8ba4\u60c5\u51b5\u4e0b<\/span>SELECT<\/span>\u8bed\u53e5\u4f1a\u5bf9\u67e5\u8be2\u5230\u7684\u8d44\u6e90\u52a0<\/span>S<\/span>\u9501<\/span>(<\/span>\u5171\u4eab\u9501<\/span>)<\/span>\uff0c<\/span>S<\/span>\u9501\u4e0e<\/span>X<\/span>\u9501<\/span>(<\/span>\u6392\u4ed6\u9501<\/span>)<\/span>\u4e0d\u517c\u5bb9\uff1b\u4f46\u52a0\u4e0a<\/span>With(NoLock)<\/span>\u540e\uff0c<\/span>SELECT<\/span>\u4e0d\u5bf9\u67e5\u8be2\u5230\u7684\u8d44\u6e90\u52a0\u9501<\/span>(<\/span>\u6216\u8005\u52a0<\/span>Sch-S<\/span>\u9501\uff0c<\/span>Sch-S<\/span>\u9501\u53ef\u4ee5\u4e0e\u4efb\u4f55\u9501\u517c\u5bb9<\/span>)<\/span>\uff1b\u4ece\u800c\u53ef\u4ee5\u662f\u8fd9\u4e24\u6761<\/span>SQL<\/span>\u53ef\u4ee5\u5e76\u53d1\u5730\u8bbf\u95ee\u540c\u4e00\u8d44\u6e90\u3002\u5f53\u7136\uff0c\u6b64\u65b9\u6cd5\u9002\u5408\u89e3\u51b3\u8bfb\u4e0e\u5199\u5e76\u53d1\u6b7b\u9501\u7684\u60c5\u51b5\uff0c\u4f46\u52a0With(NoLock)\u53ef\u80fd\u4f1a\u5bfc\u81f4\u810f\u8bfb\u3002<\/strong><\/p>\n
SELECT<\/span> <\/span>*<\/span> <\/span>FROM<\/span> Lock2 <\/span>WITH<\/span>(NOLock)
\n<\/span>SELECT<\/span> <\/span>*<\/span> <\/span>FROM<\/span> Lock1 <\/span>WITH<\/span>(NOLock)<\/span><\/div>\n
\n
\n
\n
<\/o:p><\/span><\/p>\n
d). <\/span><\/span>\u4f7f\u7528\u8f83\u4f4e\u7684\u9694\u79bb\u7ea7\u522b\u3002<\/span><\/strong>SQL Server 2000<\/span>\u652f\u6301\u56db\u79cd\u4e8b\u52a1\u5904\u7406\u9694\u79bb\u7ea7\u522b<\/span>(TIL)<\/span>\uff0c\u5206\u522b\u4e3a\uff1a<\/span>READ UNCOMMITTED<\/span>\u3001<\/span>READ COMMITTED<\/span>\u3001<\/span>REPEATABLE READ<\/span>\u3001<\/span>SERIALIZABLE<\/span>\uff1b<\/span>SQL Server 2005<\/span>\u4e2d\u589e\u52a0\u4e86<\/span>SNAPSHOT TIL<\/span>\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c<\/strong><\/span>SQL Server<\/span><\/strong>\u4f7f\u7528<\/span>READ COMMITTED TIL<\/span><\/strong>\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u4e0a\u9762\u7684\u4e24\u6761<\/span>SQL<\/span>\u524d\u90fd\u52a0\u4e0a\u4e00\u53e5<\/span>SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED<\/span>\uff0c\u6765\u964d\u4f4e<\/strong><\/span>TIL<\/span><\/strong>\u4ee5\u907f\u514d\u6b7b\u9501<\/span><\/strong>\uff1b\u4e8b\u5b9e\u4e0a\uff0c\u8fd0\u884c\u5728<\/span>READ UNCOMMITTED TIL<\/span>\u7684\u4e8b\u52a1\uff0c\u5176\u4e2d\u7684<\/span>SELECT<\/span>\u8bed\u53e5\u4e0d\u5bf9\u7ed3\u679c\u8d44\u6e90\u52a0\u9501\u6216\u52a0<\/span>Sch-S<\/span>\u9501\uff0c\u800c\u4e0d\u4f1a\u52a0<\/span>S<\/span>\u9501\uff1b\u4f46\u8fd8\u6709\u4e00\u70b9\u9700\u8981\u6ce8\u610f\u7684\u662f\uff1a<\/span>READ UNCOMMITTED TIL<\/span><\/strong>\u5141\u8bb8\u810f\u8bfb<\/span><\/strong>\uff0c\u867d\u7136\u52a0\u4e0a\u4e86\u964d\u4f4e<\/span>TIL<\/span>\u7684\u8bed\u53e5\u540e\uff0c\u4e0a\u9762\u4e24\u6761<\/span>SQL<\/span>\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u4e0d\u4f1a\u62a5\u9519\uff0c\u4f46\u6267\u884c\u7ed3\u679c\u662f\u4e00\u4e2a\u8fd4\u56de<\/span>1<\/span>\uff0c\u4e00\u4e2a\u8fd4\u56de<\/span>2<\/span>\uff0c\u5373\u8bfb\u5230\u4e86\u810f\u6570\u636e\uff0c\u4e5f\u8bb8\u8fd9\u5e76\u4e0d\u662f\u6211\u4eec\u6240\u671f\u671b\u7684\u3002<\/span> <\/p>\n
\n
e). <\/span><\/span>\u5728<\/span>SQL<\/span>\u524d\u52a0<\/span>SET LOCK_TIMEOUT timeout_period<\/span>\uff0c\u5f53\u8bf7\u6c42\u9501\u8d85\u8fc7\u8bbe\u5b9a\u7684<\/span>timeout_period<\/span>\u65f6\u95f4\u540e\uff0c\u5c31\u4f1a\u7ec8\u6b62\u5f53\u524d<\/span>SQL<\/span>\u7684\u6267\u884c\uff0c\u727a\u7272\u81ea\u5df1\uff0c\u6210\u5168\u522b\u4eba\u3002<\/span><\/p>\n
f). <\/span><\/span>\u4f7f\u7528\u57fa\u4e8e\u884c\u7248\u672c\u63a7\u5236\u7684\u9694\u79bb\u7ea7\u522b<\/span>(SQL Server 2005<\/span><\/strong>\u652f\u6301<\/span>)<\/span><\/strong>\uff1a\u5f00\u542f\u4e0b\u9762\u7684\u9009\u9879\u540e\uff0c<\/span>SELECT<\/span>\u4e0d\u4f1a\u5bf9\u8bf7\u6c42\u7684\u8d44\u6e90\u52a0<\/span>S<\/span>\u9501\uff0c\u4e0d\u52a0\u9501\u6216\u8005\u52a0<\/span>Sch-S<\/span>\u9501\uff0c\u4ece\u800c\u5c06\u8bfb\u4e0e\u5199\u64cd\u4f5c\u4e4b\u95f4\u53d1\u751f\u7684\u6b7b\u9501\u51e0\u7387\u964d\u81f3\u6700\u4f4e\uff1b\u800c\u4e14\u4e0d\u4f1a\u53d1\u751f\u810f\u8bfb\u3002<\/strong>\u554a<\/span><\/p>\n
SET<\/span> ALLOW_SNAPSHOT_ISOLATION <\/span>ON<\/span>
\n<\/span>SET<\/span> READ_COMMITTED_SNAPSHOT <\/span>ON<\/span><\/div>\n
\n
\n
<\/o:p><\/span><\/p>\n
       <\/span><\/span>g). <\/span><\/span>\u4f7f\u7528\u7ed1\u5b9a\u8fde\u63a5<\/span>(<\/span>\u4f7f\u7528\u65b9\u6cd5\u89c1\u4e0b\u4e00\u4e2a\u793a\u4f8b\u3002<\/span>)<\/span> <\/p>\n
\n
 <\/o:p><\/span><\/p>\n
5.2 <\/span><\/span><\/strong>\u7a0b\u5e8f\u6b7b\u9501<\/span>(SQL<\/span><\/strong>\u963b\u585e<\/span>)<\/o:p><\/span><\/strong><\/p>\n
\u770b\u4e00\u4e2a\u4f8b\u5b50\uff1a\u4e00\u4e2a\u5178\u578b\u7684\u6570\u636e\u5e93\u64cd\u4f5c\u4e8b\u52a1\u6b7b\u9501\u5206\u6790<\/a><\/span>\uff0c\u6309\u7167\u6211\u81ea\u5df1\u7684\u7406\u89e3\uff0c\u6211\u89c9\u5f97\u8fd9\u5e94\u8be5\u7b97\u662f<\/span>C#<\/span>\u7a0b\u5e8f\u4e2d\u51fa\u73b0\u6b7b\u9501\uff0c\u800c\u4e0d\u662f\u6570\u636e\u5e93\u4e2d\u7684\u6b7b\u9501\uff1b\u4e0b\u9762\u7684\u4ee3\u7801\u6a21\u62df\u4e86\u8be5\u6587\u4e2d\u5bf9\u6570\u636e\u5e93\u7684\u64cd\u4f5c\u8fc7\u7a0b\uff1a<\/span><\/p>\n
\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n
\"\"\/\/<\/span>\u7565\u53bb\u7684\u65e0\u5173\u7684code<\/span>
\n\"\"<\/span>SqlConnection conn <\/span>=<\/span> <\/span>new<\/span> SqlConnection(connectionString);
\n\"\"conn.Open();
\n\"\"SqlTransaction tran <\/span>=<\/span> conn.BeginTransaction();
\n\"\"<\/span>string<\/span> sql1 <\/span>=<\/span> <\/span>\"<\/span>Update Lock1 SET C1=C1+1<\/span>\"<\/span>;
\n\"\"<\/span>string<\/span> sql2 <\/span>=<\/span> <\/span>\"<\/span>SELECT * FROM Lock1<\/span>\"<\/span>;
\n\"\"ExecuteNonQuery(tran, sql1); <\/span>\/\/<\/span>\u4f7f\u7528\u4e8b\u52a1:\u4e8b\u52a1\u4e2dLock\u4e86Table<\/span>
\n\"\"<\/span>ExecuteNonQuery(<\/span>null<\/span>, sql2); <\/span>\/\/<\/span>\u65b0\u5f00\u4e00\u4e2aconnection\u6765\u8bfb\u53d6Table<\/span>
\n\"\"<\/span>
\n\"\"<\/span>public<\/span> <\/span>static<\/span> <\/span>void<\/span> ExecuteNonQuery(SqlTransaction tran, <\/span>string<\/span> sql)
\n<\/span>{
\n\"\"    SqlCommand cmd <\/span>=<\/span> <\/span>new<\/span> SqlCommand(sql);
\n\"\"    <\/span>if<\/span> (tran <\/span>!=<\/span> <\/span>null<\/span>)
\n    <\/span>{
\n\"\"        cmd.Connection <\/span>=<\/span> tran.Connection;
\n\"\"        cmd.Transaction <\/span>=<\/span> tran;
\n\"\"        cmd.ExecuteNonQuery();
\n\"\"    }<\/span><\/span>
\n\"\"    <\/span>else<\/span>
\n    <\/span>{
\n\"\"        <\/span>using<\/span> (SqlConnection conn <\/span>=<\/span> <\/span>new<\/span> SqlConnection(connectionString))
\n        <\/span>{
\n\"\"            conn.Open();
\n\"\"            cmd.Connection <\/span>=<\/span> conn;
\n\"\"            cmd.ExecuteNonQuery();
\n\"\"        }<\/span><\/span>
\n\"\"    }<\/span><\/span>
\n\"\"}<\/span><\/span> <\/p>\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n
\n
\u6267\u884c\u5230<\/span>ExecuteNonQuery(null<\/span>, sql2)<\/span>\u65f6\u629b\u51fa<\/span>SQL<\/span>\u6267\u884c\u8d85\u65f6\u7684\u5f02\u5e38\uff0c\u4e0b\u56fe\u4ece\u6570\u636e\u5e93\u7684\u89d2\u5ea6\u6765\u770b\u8be5\u95ee\u9898\uff1a<\/span><\/p>\n
     \"\u70b9\u51fb\u67e5\u770b\u539f\u56fe\"<\/a>      <\/span><\/span><\/p>\n
     \u4ee3\u7801\u4ece\u4e0a\u5f80\u4e0b\u6267\u884c\uff0c\u4f1a\u8bdd<\/span>1<\/span>\u6301\u6709\u4e86\u8868<\/span>Lock1<\/span>\u7684<\/span>X<\/span>\u9501\uff0c\u4e14\u4e8b\u52a1\u6ca1\u6709\u7ed3\u675f\uff0c\u56de\u8bdd<\/span>1<\/span>\u5c31\u4e00\u76f4\u6301\u6709<\/span>X<\/span>\u9501\u4e0d\u91ca\u653e\uff1b\u800c\u4f1a\u8bdd<\/span>2<\/span>\u6267\u884c<\/span>select<\/span>\u64cd\u4f5c\uff0c\u8bf7\u6c42\u5728\u8868<\/span>Lock1<\/span>\u4e0a\u52a0<\/span>S<\/span>\u9501\uff0c\u4f46<\/span>S<\/span>\u9501\u4e0e<\/span>X<\/span>\u9501\u662f\u4e0d\u517c\u5bb9\u7684\uff0c\u6240\u4ee5\u56de\u8bdd<\/span>2<\/span>\u7684\u88ab\u963b\u585e\u7b49\u5f85\uff0c\u4e0d\u5728\u7b49\u5f85\u4e2d\uff0c\u5c31\u5728\u7b49\u5f85\u4e2d\u83b7\u5f97\u8d44\u6e90\uff0c\u5c31\u5728\u7b49\u5f85\u4e2d\u8d85\u65f6\u3002\u3002\u3002\u4ece\u4e2d\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u91cc\u9762\u5e76\u6ca1\u6709\u51fa\u73b0\u6b7b\u9501\uff0c\u800c\u53ea\u662f<\/span>SELECT<\/span>\u64cd\u4f5c\u88ab\u963b\u585e\u4e86\u3002\u4e5f\u6b63\u56e0\u4e3a\u4e0d\u662f\u6570\u636e\u5e93\u6b7b\u9501\uff0c\u6240\u4ee5<\/span>SQL Server<\/span>\u7684\u9501\u76d1\u89c6\u5668\u65e0\u6cd5\u68c0\u6d4b\u5230\u6b7b\u9501\u3002<\/span><\/p>\n
       <\/span><\/span><\/span>\u6211\u4eec\u518d\u4ece<\/span>C#<\/span>\u7a0b\u5e8f\u7684\u89d2\u5ea6\u6765\u770b\u8be5\u95ee\u9898\uff1a<\/span><\/p>\n
          \"\u70b9\u51fb\u67e5\u770b\u539f\u56fe\"<\/a> <\/o:p><\/span><\/p>\n
       <\/span><\/span>C#<\/span>\u7a0b\u5e8f\u6301\u6709\u4e86\u8868<\/span>Lock1<\/span>\u4e0a\u7684<\/span>X<\/span>\u9501\uff0c\u540c\u65f6\u5f00\u4e86\u53e6\u4e00\u4e2a<\/span>SqlConnection<\/span>\u8fd8\u60f3\u5728\u8be5\u8868\u4e0a\u8bf7\u6c42\u4e00\u628a<\/span>S<\/span>\u9501\uff0c\u56fe\u4e2d\u5df2\u7ecf\u6784\u6210\u4e86\u73af\u8def\uff1b\u592a\u8d2a\u5fc3\u4e86\uff0c\u7ed3\u679c\u81ea\u5df1\u628a\u81ea\u5df1\u7ed9\u9501\u6b7b\u4e86\u3002\u3002\u3002<\/span><\/p>\n
       <\/span><\/span><\/span>\u867d\u7136\u8fd9\u4e0d\u662f\u4e00\u4e2a\u6570\u636e\u5e93\u6b7b\u9501\uff0c\u4f46\u5374\u662f\u56e0\u4e3a\u6570\u636e\u5e93\u8d44\u6e90\u800c\u5bfc\u81f4\u7684\u6b7b\u9501\uff0c\u4e0a\u4f8b\u4e2d\u63d0\u5230\u7684\u89e3\u51b3\u6b7b\u9501\u7684\u65b9\u6cd5\u5728\u8fd9\u91cc\u4e5f\u57fa\u672c\u9002\u7528\uff0c\u4e3b\u8981\u662f\u907f\u514d\u8bfb\u64cd\u4f5c\u88ab\u963b\u585e\uff0c\u89e3\u51b3\u65b9\u6cd5\u5982\u4e0b\uff1a<\/span><\/p>\n
       <\/span><\/span>a). <\/span><\/span>\u628a<\/span>SELECT<\/span>\u653e\u5728<\/span>Update<\/span>\u8bed\u53e5\u524d\uff1a<\/span><\/strong>SELECT<\/span>\u4e0d\u5728\u4e8b\u52a1\u4e2d\uff0c\u4e14\u6267\u884c\u5b8c\u6bd5\u4f1a\u91ca\u653e<\/span>S<\/span>\u9501\uff1b
\n<\/span>       <\/span><\/span>b). <\/span><\/span>\u628a<\/span>SELECT<\/span>\u4e5f\u653e\u52a0\u5165\u5230\u4e8b\u52a1\u4e2d\uff1a<\/span><\/strong>ExecuteNonQuery(tran, sql2);
\n<\/span>       <\/span><\/span>c). <\/span>SELECT<\/strong><\/span>\u52a0<\/span>With(NOLock)<\/span><\/strong>\u63d0\u793a\uff1a<\/strong>\u53ef\u80fd\u4ea7\u751f\u810f\u8bfb\uff1b
\n<\/span>       <\/span><\/span>d). <\/span><\/span>\u964d\u4f4e\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\uff1a<\/strong><\/span>SELECT<\/span>\u8bed\u53e5\u524d\u52a0<\/span>SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED<\/span>\uff1b\u540c\u4e0a\uff0c\u53ef\u80fd\u4ea7\u751f\u810f\u8bfb\uff1b
\n<\/span>       <\/span><\/span>e). <\/span><\/span>\u4f7f\u7528\u57fa\u4e8e\u884c\u7248\u672c\u63a7\u5236\u7684\u9694\u79bb\u7ea7\u522b<\/strong>\uff08\u540c\u4e0a\u4f8b\uff09\u3002
\n<\/span>       <\/span><\/span>g). <\/span><\/span>\u4f7f\u7528\u7ed1\u5b9a\u8fde\u63a5\uff1a<\/strong>\u53d6\u5f97\u4e8b\u52a1\u6240\u5728\u4f1a\u8bdd\u7684<\/span>token<\/span>\uff0c\u7136\u540e\u4f20\u5165\u65b0\u5f00\u7684<\/span>connection<\/span>\u4e2d\uff1b\u6267\u884c<\/span>EXEC sp_bindsession @Token<\/span>\u540e\u7ed1\u5b9a\u4e86\u8fde\u63a5\uff0c\u6700\u540e\u6267\u884c<\/span>exec sp_bindsession null;<\/span>\u6765\u53d6\u6d88\u7ed1\u5b9a\uff1b\u6700\u540e\u9700\u8981\u6ce8\u610f\u7684\u56db\u70b9\u662f\uff1a
\n    <\/span>(1). <\/span><\/span>\u4f7f\u7528\u4e86\u7ed1\u5b9a\u8fde\u63a5\u7684\u591a\u4e2a<\/span>connection<\/span>\u5171\u4eab\u540c\u4e00\u4e2a\u4e8b\u52a1\u548c\u76f8\u540c\u7684\u9501\uff0c\u4f46\u5404\u81ea\u4fdd\u7559\u81ea\u5df1\u7684\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\uff1b
\n    <\/span><\/span>(2). <\/span><\/span>\u5982\u679c\u5728<\/span>sql3<\/span>\u5b57\u7b26\u4e32\u7684\u201c<\/span>exec sp_bindsession null<\/span>\u201d\u6362\u6210\u201c<\/span>commit tran<\/span>\u201d\u6216\u8005\u201c<\/span>rollback tran<\/span>\u201d\uff0c\u5219\u4f1a\u63d0\u4ea4\u6574\u4e2a\u4e8b\u52a1\uff0c\u6700\u540e\u4e00\u884c<\/span>C#<\/span>\u4ee3\u7801<\/span>tran.Commit()<\/span>\u5c31\u53ef\u4ee5\u4e0d\u7528\u6267\u884c\u4e86<\/span>(<\/span>\u6267\u884c\u4f1a\u62a5\u9519\uff0c\u56e0\u4e3a\u4e8b\u52a1\u5df2\u7ecf\u7ed3\u675f\u4e86<\/span>-,-)<\/span>\u3002
\n    <\/span><\/span>(3). <\/span><\/span>\u5f00\u542f\u4e8b\u52a1<\/span>(begin tran)<\/span>\u540e\uff0c\u624d\u53ef\u4ee5\u8c03\u7528<\/span>exec sp_getbindtoken @Token out<\/span>\u6765\u53d6\u5f97<\/span>Token<\/span>\uff1b\u5982\u679c\u4e0d\u60f3\u518d\u65b0\u5f00\u7684<\/span>connection<\/span>\u4e2d\u7ed3\u675f\u6389\u539f\u6709\u7684\u4e8b\u52a1\uff0c\u5219\u5728\u8fd9\u4e2a<\/span>connection close<\/span>\u4e4b\u524d\uff0c\u5fc5\u987b\u6267\u884c\u201c<\/span>exec sp_bindsession null<\/span>\u201d\u6765\u53d6\u6d88\u7ed1\u5b9a\u8fde\u63a5\uff0c\u6216\u8005\u5728\u65b0\u5f00\u7684<\/span>connectoin close<\/span>\u4e4b\u524d\u5148\u7ed3\u675f\u6389\u4e8b\u52a1<\/span>(commit\/tran)<\/span>\u3002
\n    <\/span><\/span>(4). (Sql server 2005 <\/span><\/span>\u8054\u673a\u4e1b\u4e66<\/span>)<\/span>\u540e\u7eed\u7248\u672c\u7684<\/span> <\/span>Microsoft SQL Server <\/span><\/span>\u5c06\u5220\u9664\u8be5\u529f\u80fd\u3002\u8bf7\u907f\u514d\u5728\u65b0\u7684\u5f00\u53d1\u5de5\u4f5c\u4e2d\u4f7f\u7528\u8be5\u529f\u80fd\uff0c\u5e76\u7740\u624b\u4fee\u6539\u5f53\u524d\u8fd8\u5728\u4f7f\u7528\u8be5\u529f\u80fd\u7684\u5e94\u7528\u7a0b\u5e8f\u3002<\/span> <\/span>\u8bf7\u6539\u7528\u591a\u4e2a\u6d3b\u52a8\u7ed3\u679c\u96c6<\/span> <\/span>(MARS) <\/span><\/span>\u6216\u5206\u5e03\u5f0f\u4e8b\u52a1\u3002<\/span><\/p>\n
\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n
\"\"tran <\/span>=<\/span> connection.BeginTransaction();
\n\"\"<\/span>string<\/span> sql1 <\/span>=<\/span> <\/span>\"<\/span>Update Lock1 SET C1=C1+1<\/span>\"<\/span>;
\n\"\"ExecuteNonQuery(tran, sql1); <\/span>\/\/<\/span>\u4f7f\u7528\u4e8b\u52a1:\u4e8b\u52a1\u4e2dLock\u4e86\u6d4b\u8bd5\u8868Lock1<\/span>
\n\"\"<\/span>string<\/span> sql2 <\/span>=<\/span> <\/span>@\"<\/span>DECLARE @Token varchar(255);
\n\"\"exec sp_getbindtoken @Token out;
\n\"\"SELECT @Token;<\/span>\"<\/span>;
\n\"\"<\/span>string<\/span> token <\/span>=<\/span> ExecuteScalar(tran, sql2).ToString();
\n\"\"<\/span>string<\/span> sql3 <\/span>=<\/span> <\/span>\"<\/span>EXEC sp_bindsession @Token;Update Lock1 SET C1=C1+1;exec sp_bindsession null;<\/span>\"<\/span>;
\n\"\"SqlParameter parameter <\/span>=<\/span> <\/span>new<\/span> SqlParameter(<\/span>\"<\/span>@Token<\/span>\"<\/span>, SqlDbType.VarChar);
\n\"\"parameter.Value <\/span>=<\/span> token;
\n\"\"ExecuteNonQuery(<\/span>null<\/span>, sql3, parameter); <\/span>\/\/<\/span>\u65b0\u5f00\u4e00\u4e2aconnection\u6765\u64cd\u4f5c\u6d4b\u8bd5\u8868Lock1<\/span>
\n\"\"<\/span>tran.Commit();<\/span> <\/p>\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n
 <\/p>\n
 <\/p>\n
\n
\u9644\uff1a\u9501\u517c\u5bb9\u6027<\/span><\/strong>(FROM SQL Server 2005 <\/span><\/span><\/strong>\u8054\u673a\u4e1b\u4e66<\/span><\/strong>)<\/o:p><\/span><\/strong><\/p>\n
\u9501\u517c\u5bb9\u6027\u63a7\u5236\u591a\u4e2a\u4e8b\u52a1\u80fd\u5426\u540c\u65f6\u83b7\u53d6\u540c\u4e00\u8d44\u6e90\u4e0a\u7684\u9501\u3002\u5982\u679c\u8d44\u6e90\u5df2\u88ab\u53e6\u4e00\u4e8b\u52a1\u9501\u5b9a\uff0c\u5219\u4ec5\u5f53\u8bf7\u6c42\u9501\u7684\u6a21\u5f0f\u4e0e\u73b0\u6709\u9501\u7684\u6a21\u5f0f\u76f8\u517c\u5bb9\u65f6\uff0c\u624d\u4f1a\u6388\u4e88\u65b0\u7684\u9501\u8bf7\u6c42\u3002\u5982\u679c\u8bf7\u6c42\u9501\u7684\u6a21\u5f0f\u4e0e\u73b0\u6709\u9501\u7684\u6a21\u5f0f\u4e0d\u517c\u5bb9\uff0c\u5219\u8bf7\u6c42\u65b0\u9501\u7684\u4e8b\u52a1\u5c06\u7b49\u5f85\u91ca\u653e\u73b0\u6709\u9501\u6216\u7b49\u5f85\u9501\u8d85\u65f6\u95f4\u9694\u8fc7\u671f\u3002
\n\"\u70b9\u51fb\u67e5\u770b\u539f\u56fe\"<\/a><\/span><\/p>\n
<\/span><\/div>\n
 <\/div>\n
\u6587\u7ae0\u6765\u6e90\uff1a http:\/\/www.cnblogs.com\/happyhippy\/archive\/2008\/11\/14\/1333922.html<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"
\n
 <\/span>1. <\/span><\/span><\/strong>\u6b7b\u9501\u539f\u7406<\/span><\/strong><\/p>\n
    <\/span><\/span><\/span>\u6839\u636e\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u5b9a\u4e49\uff1a\u6b7b\u9501\u662f\u6307\u5728\u4e00\u7ec4\u8fdb\u7a0b\u4e2d\u7684\u5404\u4e2a\u8fdb\u7a0b\u5747\u5360\u6709\u4e0d\u4f1a\u91ca\u653e\u7684\u8d44\u6e90\uff0c\u4f46\u56e0\u4e92\u76f8\u7533\u8bf7\u88ab\u5176\u4ed6\u8fdb\u7a0b\u6240\u7ad9\u7528\u4e0d\u4f1a\u91ca\u653e\u7684\u8d44\u6e90\u800c\u5904\u4e8e\u7684\u4e00\u79cd\u6c38\u4e45\u7b49\u5f85\u72b6\u6001\u3002<\/span><\/p>\n
    <\/span><\/span><\/span>\u6b7b\u9501\u7684\u56db\u4e2a\u5fc5\u8981\u6761\u4ef6\uff1a
\n<\/span>\u4e92\u65a5\u6761\u4ef6<\/span>(Mutual exclusion)<\/span>\uff1a\u8d44\u6e90\u4e0d\u80fd\u88ab\u5171\u4eab\uff0c\u53ea\u80fd\u7531\u4e00\u4e2a\u8fdb\u7a0b\u4f7f\u7528\u3002
\n<\/span>\u8bf7\u6c42\u4e0e\u4fdd\u6301\u6761\u4ef6<\/span>(Hold and wait)<\/span>\uff1a\u5df2\u7ecf\u5f97\u5230\u8d44\u6e90\u7684\u8fdb\u7a0b\u53ef\u4ee5\u518d\u6b21\u7533\u8bf7\u65b0\u7684\u8d44\u6e90\u3002
\n<\/span>\u975e\u5265\u593a\u6761\u4ef6<\/span>(No pre-emption)<\/span>\uff1a\u5df2\u7ecf\u5206\u914d\u7684\u8d44\u6e90\u4e0d\u80fd\u4ece\u76f8\u5e94\u7684\u8fdb\u7a0b\u4e2d\u88ab\u5f3a\u5236\u5730\u5265\u593a\u3002
\n<\/span>\u5faa\u73af\u7b49\u5f85\u6761\u4ef6<\/span>(Circular wait)<\/span>\uff1a\u7cfb\u7edf...<\/span><\/p>\n
 <\/p>\n
<\/span><\/p>\n<\/div>\n
 \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[288],"tags":[172],"class_list":["post-372","post","type-post","status-publish","format-standard","hentry","category-db","tag-sqlserver"],"_links":{"self":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/372","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/comments?post=372"}],"version-history":[{"count":0,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/372\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/media?parent=372"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/categories?post=372"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/tags?post=372"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}