Saturday Oct 13, 2012

为什么Flashback Log产生量要远少于Redo Log?

有同学提问关于闪回数据库日志为什么远少于redo log?   RVWR( Recovery Writer)每3s检查flashback generate buffer中的block before image的具体算法是如何的? 是否每一次block change都需要RVWR写出block before image 到flashback log?[Read More]
About

author's avatar The Maclean Liu
Advanced Customer Services
AskMaclean Logo 10g_ocm SHOUG

Search

Categories
Archives
« April 2014
SunMonTueWedThuFriSat
  
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
   
       
Today