Examining the different aspects of an execution plan, from selectivity to parallel execution and understanding what information you should be gleaming from the plan can be overwhelming even for the most experienced DBA. This paper offers a detailed explanation about each aspect of the execution plan ...
Structured Query Language used to manipulate the data with help of queries. The SQL uses some operators to throw queries like SELECT uses to selects a data value and shown on the output screen, Where uses for conditions, Group by uses to...
In computer science, project management is the means by which software projects are developed on time. They assist larger groups such as companies having dozens of employees. Answer and Explanation: Scheduling refers to when the different components of the software will ...
A method for selectively preparing customized reports of query explain data comprises selectively retrieving from the database subsets of the query explain data for the at least one query statement; f
Dbms_scheduler是Oracle提供创建计划任务的包,任务类型可以是执行PL\SQL程序、执行外部脚本、调用操作系统命令,通常用于创建定期定时的任务,不依赖操作系统,保存在数据库内,数据库迁移时不受影响,发生错误有日志可以查询,比较方便创建和使用。例如实施数据备份计划,将数据的备份的脚步保存在day_backup.sh 中,然后创建计划...
Examining the different aspects of an execution plan, from selectivity to parallel execution and understanding what information you should be gleaming from the plan can be overwhelming even for the most experienced DBA. This paper offers a detailed explanation about each aspect of the execution plan ...
Examining the different aspects of an execution plan, from selectivity to parallel execution and understanding what information you should be gleaming from the plan can be overwhelming even for the most experienced DBA. This paper offers a detailed explanation about each aspect of the execution pl...