7,增加服务器 CPU个数;但是必须明白并行处理串行处理更需要资源例如内存.使用并行还是串行程是MsSQL自动评估选择的.单个任务分解成多个任务,就可以在处理器上运行.例如耽搁查询的排序,连接,扫描和GROUP BY字句同时执行,SQL SERVER根据系统的负载情况决定最优的并行等级,复杂的需要消耗大量的CPU的查询最适合并行处理.但是...
PL/SQL, SQL, Data Modeling, Unix Shell Script, Agile, Foundation, Performance Tuning, Security Preferred Skills : Domain : CNET Global Solutions IncRichardson, TXPost Resume toView Contact Details &Apply for Job Job Description : Title: PL-SQL Developer Location: REMOTE for Initial 3 months...
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1 慢查询日志慢查询日志是MySQL内置的一项功能,可以记录执行超过指定时间的SQL语句2 发现慢SQL的工具SkywalkingVisualVmJavaMelody3 慢查询日志相关参数及默认值参数作用默认值log_output日志输出到哪儿,默认FILE, 表示文件;设置成TABLE,则将日志记录到mysql.slow_log中。也可设置多种格式,比如fIle, TABLEFILElongqu 数据...