Oracle性能优化.ppt 热度: 1 2013 2013年年 6 6月月 2 TuningDesign TuningApplication TuningProcess TuningInstance TuningDatabase TuningIO TuningOS WaitEvent Lifecycle&PerformanceTuning •需求调调调段,据调调化的目的是调服调调人调接受调据调影比调小的操作调调,而数数响 ...
2．数据仓库系统（DataWarehousing）这种信息系统的主要任务是从Oracle的海量数据中进行查询，得到数据之间的某些规律。数据库管理员需要为这种类型的Oracle数据库着重考虑下述因素或参数：（1）是否采用B*-索引或者bitmap索引？（2）是否采用并行SQL查询以提高查询效率？（3）是否采用PL/SQL函数编写存储过程？（4）是否有...
Oracle Database Performance Tuning Guide Oracle Database Reference 2.1.3Session and System Statistics A large number of cumulative database statistics are available on a system and session level. Some of these statistics are collected by AWR. ...
Analyzing and Optimizing Oracle Database Performance - Part I For Part II - Analyzing and Optimizing Oracle Database Performance - Part II You will find summary
DatabaseResident ConnectionPool Upto 20xconnections RACPerformance Enhancements Upto 70%Faster QueryResult Caching Upto 25%Faster ClientSide Caching Upto 22%Faster OracleSecure Backup Upto 25%Faster OracleStreams Enhancements Upto 2xFaster OptimizerStats ...
In-Memory Columnar Formats in Flash Cache (12.2) 3 - 4x Overall Analytics Performance Improvement Database Server SGA Up to 1.5 TB DRAM In-Memory Columnar scans IMC Extends In-Memory Column Store into Flash 25.6 TB Flash x 3 = 76.8 TB (or more) IMC (In-Memory Columnar) data 12.8 TB ...
Automatic Database Diagnostic Monitor (DBMS_ADDM) SQL Performance Analyzer (DBMS_SQLPA) SQL Repair Advisor (DBMS_SQLDIAG) SQL Tuning Advisor (DBMS_SQLTUNE) 14.3.5 例:通过OEM观察:如何使Segment Advisor完成段重组。 接续14.3.1的实验, SQL>delete bigtable where rownum<=900000; ...
9/11/2015ISYS366 - Week051 ISYS366 – Week 5-6 Database Tuning - User and Rollback Data Spaces, Recovery, Backup. Oracle Database Architecture An Oracle server: –Is a database management system that provides an open, comprehensive, integrated approach to information. ...
12-6 Copyright©2008,Oracle.Allrightsreserved.SettingStatisticPreferences SCOPE STATEMENTLEVELTABLELEVEL Optimizerstatisticsgatheringtask PREFERENCES ESTIMATE_PERCENTNO_INVALIDATEMETHOD_OPTGRANULARITYINCREMENTALPUBLISHSTALE_PERCENT SCHEMALEVELDATABASELEVELGLOBALLEVEL DBADBMS_STATSset|get|delete|export|import ...
课件:oracle全面培训教材.ppt,* Practice 3: Managing an Oracle Instance 1 Connect to the database as user SYS AS SYSDBA and shutdown the database. 2 With the database shutdown, create an SPFILE from the PFILE. Place the SPFILE in directory $HOME/ADMIN/PFI