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The SQL Access Advisor makes suggestions about indexes and materialized views which might improve system performance. This article describes how to use the SQL Access Advisor in Oracle 10g. Enterprise Manager DBMS_ADVISOR Quick Tune Related Views Rel…
在Oracle数据库出现性能问题时,使用Oracle本身的工具包,给出合理的调优建议是比较省力的做法. tuning advisor 是对输入的sql set的执行计划进行优化accsee advisor 是对sql set当前如果引入索引.分区的话,性能有多大的提升,给出建议.sql tuning advisor是从一方面给出的建议,access advisor可以针对一个表或者多个表的所有操作给出分析建议,比如说对于select语句他会建议增加索引,而会降低DML的性能,sql access…
Oracle官方文档对SQL Access Advisor的描述如下: SQL Access Advisor, which is a tuning tool that provides advice on improving the performance of a database through partitioning, materialized views, indexes, and materialized view logs. 本文介绍下如何通过DBMS_ADVISOR的quick_…
问题: Oracle Database 10g 未在当前操作系统中经过认证 在Windows 7中安装Oracle 10g. 使用的Orcale版本是10g. 步骤1: 在Orcale官网上下载,下载地址为:http://download.oracle.com/otn/nt/oracle10g/10203/10203_vista_w2k8_x86_production_db.zip 可以直接复制到迅雷中下载.大小为778M. 步骤2: 点击setup.exe安装,经过前置判断,如果出现如下错误信…
使用OEM方式来创建SQL Access Advisor访问优化建议,已经是四五年的事了,下面就来写写怎样使用DBMS_ADVISOR.SQLACCESS_ADVISOR来创建SQL Access Advisor访问优化建议吧. 1.SQL Access Advisor从三个方面提供优化建议 1.1.索引优化建议 SQL Access Advisor可以建议通过创建bitmap,function-based,B-tree 三种类型索引的改进SQL执行性能. 1.2.物化视图优化建议 SQL Ac…
 启动Tomcat之后出现全是英文错误: ORACLE DATABASE 10g EXPRESS EDITION LICENSE AGREEMENT To use this license, you must agree to all of the following terms (by either clicking the accept button or installing and using the program): ELIGIBILITY EXPORT RESTRICTIONS…
sql tuning advisor:创建任务DECLARE my_task_name VARCHAR2(30); my_sqltext CLOB; BEGIN my_sqltext := 'SELECT /*+ ORDERED */ * ' || 'FROM employees e, locations l, departments d ' || 'WHERE e.department_id = d.department_id AND ' || 'l.location_id = d.locat…
1.知识储备 1)    当出现介质损坏时(如数据文件丢失),任何闪回方法都毫无用处,只能执行标准的备份.还原与恢复. 2.SCN记录方法 SQL>variable x_scn number; SQL>execute :x_scn:=dbms_flashback.get_system_change_number; SQL>print x_scn; 或 SQL>select current_scn,flashback_on from v$database; 1)    设当前SCN为…
1.概述: provides advice on improving the performance of a database through partitioning, materialized views, indexes, and materialized view logs. 通过分区.物化视图.索引来提供优化建议. 2.…
1.检查错误代码:ora-10010 亦或是ora-10003,上网找响应的解决办法: 异常状态:登陆不上 常用的方法解决 (1)进入Oracle命令行模式 (2)Shutdown immedaite; (3)Startup mount; 此时将会显示那个文件错误,例如文件1 (4)recover 1: (5)如果此时显示恢复被阻止,那么转到第7步 (6)如果此时恢复成功,尝试重新登陆 (7)卸载本软件的简版 1)关闭服务中所有和Oracle有关的服务项 2)进入注册表中,regedit,根据网…