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RSS订阅转载 关于SELECT * FROM v$sga;结果的解析
关于SELECT * FROM v$sga;结果的解析NAME VALUE-------------------- ---------Fixed Size 39816Variable Size 151544820Database...
2007-04-27 15:47:01
542
转载 DBWR & LGWR & CKPT
Database Writer (DBWn) The server process records changes to undo and data blocks in the Database Buffer Cache. DB...
2007-04-26 11:53:41
198
转载 curious update in oracle, collect from web
update ORACLE UPDATE 语句语法与性能分析的一点看法 为了方便起见,建立了以下简单模型,和构造了部分测试数据: 在某个业务受理子系统BSS中， --客户资料表 create table custo...
2007-04-25 10:25:54
171
转载 AWR vs statspack‘s snap method
Oracle AWR and STATSPACK Manual snapshot commandsThere are times when you want to manually collect AWR and STATSPA...
2007-04-25 10:20:14
149
转载 sql server case vs decode，转的
Oracle:select decode(a1,'0', 'easy', '1', 'normal', '2', 'hard') level from a;转成SQL Server为:select (case a1 when '...
2007-04-25 10:18:39
85
转载 row chain VS row migration
OverviewIf you notice poor performance in your Oracle database Row Chaining and Migration may be one of several re...
2007-04-25 10:13:07
111
转载 Oracle中，一个Delete操作的流程
Oracle中，一个Delete操作的流程删除(DELETE)1.Oracle读Block到Buffer Cache(如果该Block在Buffer中不存在)2.在redo log buffer中记录delete操作的细节3.在...
2007-04-25 10:06:58
204
转载 转 Parsing in Oracle
Parsing in Oracle Amar Kumar Padhi, amar_padhi@hotmail.com <mailto:amar_padhi@hotmail.com> Whenever a state...
2007-03-11 18:27:24
105
转载 一条语句被解析parse的过程
一条语句被解析parse的过程2006-11-22 00:35:42 / 个人分类：administration <http://blog.oracle.com.cn/47810/spacelist_type_blog_i...
2007-03-11 18:26:28
316
转载 转 Oracle's buffer cache
Oracle's buffer cache The buffer cache is part of the SGA <http://www.adp-gmbh.ch/ora/concepts/sga.html#db_buf...
2007-03-11 18:24:28
106
转载 转: Latch 系列
Latch 系列一: Introducion <http://www.oracledba.com.cn/blog/?p=26> Posted in Oracle <http://www.oracledba.co...
2007-03-11 18:23:37
119
转载 转 Oracle's x$ Tables
Oracle's x$ Tables See also: Speculation of X$ Table Names <http://www.stormloader.com/yonghuang/computer/x$ta...
2007-03-11 18:22:26
253
转载 statspack 必看的十项内容
虽然是转的,也得认真看看....statspack 必看的十项内容发表人:pentium | 发表时间: 2007年三月05日, 01:40http://xsb.itpub.net/post/419/38713 <http...
2007-03-11 18:20:24
98
转载 [转]Notes on Data Guard / Physical Standby in 10g
Notes on Data Guard / Physical Standby in 10g Primary orcl10g is running. About to create orcl10gsb as standby on...
2007-03-11 18:19:49
207
转载 biti 的热点块我要放在我的blog 里,仔细看,认真看,看一遍忘两便,咋办?
作者:biti_rainy (出处 <http://blog.youkuaiyun.com/biti_rainy/archive/2004/07/06/35188.aspx> )热点块的定义数据库的热点块，从简单了讲，就是极短的...
2007-03-11 18:17:58
283
转载 oracle 执行动态SQL的另外一个妙招,execute immediate 的旧版本替代
让我们看看老版本的oracle 是怎么执行动态SQL的create or replace procedure scheam1.trunc*** as source_cursor integer; rows_processed i...
2007-03-11 18:04:11
161
转载 oracle 8i+ 10g cient ORA-12518 metalink 解决方案
8Subject: ORA-12518 Reported When Using 10gr2 TNS Listener to Connect To a 8i Database Doc ID: Note:341482.1 ...
2007-03-11 17:50:42
107
转载 Oracle9iR2 Data Guard的保护模式
转(需要引用, 请注明出处: http://ningoo.itpub.net) flaco ask me a question of v$logfile type, made me go through standby db a...
2007-03-10 18:08:28
104
转载 Luwis 's index article
How High Can You Go? by Jonathan LewisIntroductionSomeone on the Oracle-L mailing list recently asked, “Does Orac...
2007-02-24 21:01:36
159
转载 Locally Managed Tablespaces
Locally Managed Tablespaces Unless you have been living on another planet (one that does not run Oracle!) you will...
2007-02-24 20:32:45
140
转载 what is the normal form in English
All relational databases require unique keys to identify primary table rows.A key is required whenever we need to ...
2007-02-24 19:47:30
183
转载 normal format
关系数据库设计之基本规则－－范式 引用：原帖由 xzh2002 于 2003-7-22 10:56 发表 1NF: 属性不可再分 2NF:消除1NF的部分依赖 3NF:消除2NF的传递依赖 引用： [color=green] ...
2007-02-24 19:44:04
170
转载 Solaris下修改主机名
Solaris下修改主机名 /etc/hosts/etc/nodename/etc/hostname.ce0/etc/net/ticlts/hosts/etc/net/ticots/hosts/etc/net/ticotsord...
2007-02-22 14:47:46
73
转载 DBMS_METADATA.GET_GRANTED_DDL and dbms_metadata.get_dll, 能帮我干好多活
转利用DBMS_METADATA包获取权限信息 =========================================================== 作者: yangtingkun(http://yangtin...
2007-02-22 14:26:59
127
转载 更快地批量数据处理 by ace yangtingkun
如何更快地批量数据处理?发表人:xzh2000 | 发表时间: 2006年十二月07日, 16:42在批量处理数据时，比如从上亿条记录的表中删除上1000万条数据，不仅要考虑对undo的影响，还要考虑对redo，对磁盘i/o，锁...
2007-02-22 13:16:17
123
转载 new article
http://asktom.oracle.com/pls/asktom/f?p=100:11:974743640809258::::P11_QUESTION_ID:442029737684http://asktom.oracle...
2007-02-11 19:01:34
94
转载 In VS exists， in achived by rewirte sql, existis rewrite using pl/sql block
Tom:can you give me some example at which situationIN is better than exist, and vice versa. and we said...We...
2007-02-10 21:45:02
83
转载 to see what package is running in DB
Another possible idea : the following script was adapted from the original idea & research from Steve Adams (w...
2007-01-22 11:55:16
244
转载 showsql.sql
---------------- showsql.sql --------------------------column status format a10set feedback offset serveroutput on...
2007-01-21 12:02:31
106
转载 about lock
1) Here is a small example showing how this happens. We will use three V$ tables in order to see how this works;...
2007-01-21 11:46:58
84
转载 tom 就是tom
You Asked Good Morning Tom.I need your expertise in this regard. I got a table which contains millions or rec...
2007-01-19 15:01:16
84
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