Tuesday, March 20, 2012

Replication and Log shipping

Sql server 2005 heavily hit database
Plans
1)Create a replicated databases to let users with query only access
2)Log shipping to allow a 4hour lag time with Disaster recovery just in
case
users gaff..
Your opinion
1)Transactional replication
2)Log shipping with a stagger of 4 hours
Not done this and wondering are there things to watch out for?
Are there better ways to go about this?
Is replication and log shipping in 2005 configured as a single setup?
Again your time and ideas are appreciated as alwaysI would create database snapshots on the local server if you have a large
tempdb and lots of memory. Otherwise I would use replication.
With log shipping your exposure to data loss if in excess of 4 hours. When
you apply the log you will have to kick your users off the system as you
apply the log to the database. With replication you can put user indexes on
the replicated subscriber database to offer better querying performance.
With log shipping the database is read only - you can't create indexes
there.
--
Hilary Cotter
Director of Text Mining and Database Strategy
RelevantNOISE.Com - Dedicated to mining blogs for business intelligence.
This posting is my own and doesn't necessarily represent RelevantNoise's
positions, strategies or opinions.
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"Massa Batheli" <mngong@.gmail.com> wrote in message
news:1159285642.485892.323850@.b28g2000cwb.googlegroups.com...
> Sql server 2005 heavily hit database
> Plans
> 1)Create a replicated databases to let users with query only access
> 2)Log shipping to allow a 4hour lag time with Disaster recovery just in
> case
> users gaff..
> Your opinion
> 1)Transactional replication
> 2)Log shipping with a stagger of 4 hours
> Not done this and wondering are there things to watch out for?
> Are there better ways to go about this?
> Is replication and log shipping in 2005 configured as a single setup?
> Again your time and ideas are appreciated as always
>|||Massa,
I did an article a while back that will help you decide between the 2
options: http://www.replicationanswers.com/Standby.asp.
As you're using SQL Server 2005, I'd also add a couple more options for you
to consider looking at:
(a) Mirroring and database snapshots
(b) READ_COMMITTED_SNAPSHOT option to transactional replication as a
variant on the standard Transactional Replication
Cheers,
Paul Ibison SQL Server MVP, www.replicationanswers.com .|||Thanks Folks for your time and great ideas ...............
Paul Ibison wrote:
> Massa,
> I did an article a while back that will help you decide between the 2
> options: http://www.replicationanswers.com/Standby.asp.
> As you're using SQL Server 2005, I'd also add a couple more options for you
> to consider looking at:
> (a) Mirroring and database snapshots
> (b) READ_COMMITTED_SNAPSHOT option to transactional replication as a
> variant on the standard Transactional Replication
> Cheers,
> Paul Ibison SQL Server MVP, www.replicationanswers.com .

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