inputbuffer “EXEC p2 4”): UPDATE t1 SET c2 = c2+1 WHERE c1 = @p1 The SELECT is waiting for a Shared KEY lock on index t1.cidx. The UPDATE holds a conflicting X lock. The UPDATE is waiting for an eXclusive KEY lock on index t1.idx1. The SELECT holds a conflicting S lock. ...
华三设备的用户创建、ssh、telnet等的配置 ssh server enable telnet server enable public-key local create rsa public-key local create dsa user-interface vty 0 4 authentication-modescheme protocol inbound ssh qu local-user tony class manage password simple root#12345 service-type terminal ssh telnet ...
Ideally this should be shared SCSI disks, but in SQL Server 2012 and onwards you can use just a network path (which is much slower, so not recommended). My test lab has some limits, so I’m just using a network path for this, but be aware it’s really not that suitable for ...
(&mdl_request, MDL_key::GLOBAL, "", "", MDL_SHARED, // ===> 注意此处是 MDL_key::GLOBAL,且是共享锁 MDL_EXPLICIT); /* Increment static variable first to signal innodb memcached server to release mdl locks held by it */ Global_read_lock::m_atomic_active_requests++; if (thd->mdl...
//把数组a添加进j,其key名为arr showmessage( j.toJson() ); //查看j的json文本 j:=nil; //不能写j.Free end; 代码演示 因为这是在项目的边做边写的,所以我们还是用上一章的《Delphi调用动态链接库》PosPayIntf动态库项目,先看一下我们的目录结构 ...
| Field | Type | Null | Key | Default | Extra | +---+---+---+---+---+---+ | Host | char(60) | NO | PRI | | | | User | char(16) | NO | PRI | | | | Password | char(41) | NO | | | | ... ... +---+--...
SQL Server Performance Tuning & Trouble Shooting Workshop (3 days) Unleash the Power of SQL Server for your Business, Learn from the Experts! A deep dive into Windows Server 2012 Microsoft Ireland Partner Roadshows - Register Today for October Events! Windows Server 2012 launch events in Ireland...
DB2 Command Line Processor(DB2 CLP)是所有 DB2 产品中都有的,可以使用这个应用程序运行 DB2 命令、操作系统命令或SQL 语句。用这个工具调用 DB2 命令有点儿麻烦。但是,DB2 CLP 可以成为强大的工具,因为它能够将经常使用的命令或语句序列存储在批处理文件中,可以在必要的时候运行这些批处理文件。
Redis(Remote Dictionary Server),即远程字典服务。 是一个开源的使用ANSI C语言编写、支持网络、可基于内存亦可持久化的日志型,key-value数据库,并提供多种语言的api。 redis会周期性的把更新的数据写入磁盘或者把修改操作写入追加的记录文件,并且在基础上实现了master-slave(主从)同步。是免费和开源的,是当下最热门...
immediately after pasting, hit the keyboard key corresponding to thehistory buffer indexyou want to use instead of what has been pasted from clipboard (highlighted in green). That is, hit1for example to use the first (i.e. most recent) history buffer,2for the immediately previous one, and...