Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Redo log rotation frequency

Posted on 2007-03-29
3
Medium Priority
?
849 Views
Last Modified: 2013-12-19
I've read redo logs should rotate every 20 - 30 mins.   Is there a problem if the rotation is even more infrequent say 50 - 60 mins?
0
Comment
Question by:xoxomos
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 7

Accepted Solution

by:
gattu007 earned 1000 total points
ID: 18823408
That is not a problem but only thing your recovery may go up...

0
 
LVL 7

Expert Comment

by:gattu007
ID: 18823462
The size of the redo log files can influence performance, because the behavior of
the database writer and archiver processes depend on the redo log sizes.
Generally, larger redo log files provide better performance, however
it must balanced out with the expected recovery time.Undersized log files
increase checkpoint activity and increase CPU usage.

Checkpoint frequency is affected by several factors, including log file size and
the setting of the FAST_START_MTTR_TARGET initialization parameter.
If the FAST_START_MTTR_TARGET parameter is set to limit the instance recovery time,
Oracle automatically tries to checkpoint as frequently as necessary.
Under this condition, the size of the log files should be large enough to avoid
additional checkpointing due to under sized log files.

You can find more info metalink        REDO LOGS SIZING ADVISORY
        Doc ID:       Note:274264.1
0
 

Author Comment

by:xoxomos
ID: 18837354
Thanks
0

Featured Post

Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article started out as an Experts-Exchange question, which then grew into a quick tip to go along with an IOUG presentation for the Collaborate confernce and then later grew again into a full blown article with expanded functionality and legacy…
Working with Network Access Control Lists in Oracle 11g (part 2) Part 1: http://www.e-e.com/A_8429.html Previously, I introduced the basics of network ACL's including how to create, delete and modify entries to allow and deny access.  For many…
This video shows setup options and the basic steps and syntax for duplicating (cloning) a database from one instance to another. Examples are given for duplicating to the same machine and to different machines
This video shows information on the Oracle Data Dictionary, starting with the Oracle documentation, explaining the different types of Data Dictionary views available by group and permissions as well as giving examples on how to retrieve data from th…

618 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question