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Replication Queries - Need Help

 
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balajikkrishnan via SQLMo

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Since: May 16, 2008
Posts: 23



(Msg. 1) Posted: Mon Jan 12, 2009 5:25 am
Post subject: Replication Queries - Need Help
Archived from groups: microsoft>public>sqlserver>replication (more info?)

Hi

I am going to do a setup a replication between a remote server and a db
server in india. Both the servers are running SQL Server 2005.

The data has to be replicated not transactional, there is latency time of 1-2
hours

1. What type of replication I should go with. - Recommendations
2. I need to compare Replication Vs Log Shipping
3. What are the Boundary Conditions
4. Fail Over Mechanism
5. How reliable is Replication over WAN?
6. The subscriber is a reporting db and it will have lot of data of select
queries fired in it. Is it going to create locks when replication happens.

Thanks

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Paul Ibison

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Since: Oct 03, 2008
Posts: 35



(Msg. 2) Posted: Mon Jan 12, 2009 5:25 am
Post subject: RE: Replication Queries - Need Help [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Transactional replication works well for reporting purposes. It is preferable
to log shipping in that log shipping will require an exclusive database lock
when applying the transaction logs, unlike transactional replication. When
the commands are applied at the subscriber in transactional replication there
will be locks like for any other data modification. If this is a problem, it
can be mitigated when reporting by using the snapshot committed isolation
level, or NOLOCK.
Replication is resilient over a LAN and ACID properties are recognised.
You mention failover - this is quite a different requirement to a reporting
database and for this I'd generally recommend database mirroring.
HTH,
Paul Ibison, www.replicationanswers.com

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