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Home -> Community -> Mailing Lists -> Oracle-L -> Re: Standby Databse Problem
Hi,
Why not make your logfiles substantially bigger and force a logswitch every half hour with the init<SID>.ora parameters 500K does not sound very large to me so increasing this to say 5M may solve your batch problems
Jack
Hussain Ahmed Qadri <hussain_at_skm.org.pk>@fatcity.com on 13-02-2002 09:08:18
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Hi,
------Winnt 4.0, Oracle 8.1.7.-------
We have slight problem with our Standby Database Configuration. All the
archives from our Primary Database are not being copied to the Standby
Database. When the archives are generated at a normal time, i.e after after
a gap of 15-20 minutes ( which is normal, as our logfile size is 500K and
it works fine with our normal database behaviour) , the archives get copied
completely to the standby site. But due to a few jobs that run over night,
the log switch happens very fast,a few times per minute. This kind of fast
switching also happens incase of bulk insert or delete. Its in such cases
that some of the archive logs are not copied to the standby site. To
counter that, we increased the number of archiver processes from 1 to 4 on
the Primary site, and when it didn't entirely solve our problem, we
increased it to the maximum, i.e is 10. Even now all the archives are not
being copied because of the quick switching of logs.
Keeping the archiver processes to 10 is also a burden on the resources. Moreover, the second destination for writing archives(standby DB) is optional, and the value for log_archive_min_succeed_dest is set to 0. I am not sure increasing this or changing the site from optional to mandatory would solve the problem. Or would that have any effect?
The other thing is that since the problem lies with the files not being copied from one site to the other, so it should not directly have anything to do with the Archiver processes, as server is generating archives properly. But on increasing the number of archiver processes, less number of files were not copied to the standby site, so it did help. Is there something we are missing here.
Any help would be appreciated.
Regards,
Hussain Ahmed Qadri
Database Administrator
Shaukat Khanum Memorial Cancer Hospital & Research Centre
hussain_at_skm.org.pk
www.shaukatkhanum.org.pk
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