• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 2011
  • Last Modified:

How to increase log buffer parameter in Oracle 9i

I want to increase the my redo buffers size. For that i need to modify the log buffer parameter. But the same is not there in init.ora. Where can i find the parameter and how to increase my redo buffer size?
0
pradiptam
Asked:
pradiptam
2 Solutions
 
vc01778Commented:
1. select * from v$parameter where name like '%log%buffer%'

NUM      NAME      TYPE      VALUE      ISDEFAULT      ISSES_MODIFIABLE      ISSYS_MODIFIABLE      ISMODIFIED      ISADJUSTED      DESCRIPTION      UPDATE_COMMENT
352      log_buffer      3      524288      TRUE      FALSE      FALSE      FALSE      FALSE      redo circular buffer size      

2. If you are using an spfile, then:

alter system set log_buffer=<whatever> scope=spfile

If you are using  a pfile, then edit it (init...ora):

log_buffer=<whatever>

3. Restart Oracle.

VC
0
 
seazodiacCommented:
Here is my advice for you ( Yes, I understand you want to increase log_buffer)

keep log_buffer set between 1M and 3M , and you are wasting your memory if setting any value above 3M mark.
for reasons, just read up on LGWR behavior (it will flush every 3 secs or 1/3rd of the mem is filledd).



Unless you are doing EXP/IMP , don't change the value....
0
 
pradiptamAuthor Commented:
Well i agree to both of your answers but my question is different. I have installed oracle and its working fine. Now I want to increase redo buffer. How to do the same? I am not using spfile and using init.ora. By default it doesn't show the log buffer parameter. Now how do i increase the log buffers?
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
anand_2000vCommented:
log on with
sqlplusw
give sys as sysdba
in the username. press enter and then enter the password.

type in show parameter log_buffer in the SQL prompt. You can see the present value of log_buffer. If this is not present in the init file add it now.
0
 
vc01778Commented:
@pradiptam


Well,  I told you how in my very first message, didnt' I ?

Using an editor add a line like this to your init.ora file:

log_buffer=<size_you_want>

.. and restrat Oracle.

I really do not know what's not clear about that ...

VC
0
 
seazodiacCommented:
VC is right, if you don't see the log_buffer parameter, don't panic, that's only because you are using the default value.

you can specify it as you like.
0

Featured Post

[Webinar On Demand] Database Backup and Recovery

Does your company store data on premises, off site, in the cloud, or a combination of these? If you answered “yes”, you need a data backup recovery plan that fits each and every platform. Watch now as as Percona teaches us how to build agile data backup recovery plan.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now