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From Knut Anders Hatlen <Knut.Hat...@Sun.COM>
Subject Re: master and slave are not in synch for replicated database
Date Wed, 08 Apr 2009 13:01:37 GMT
V Narayanan <V.Narayanan@Sun.COM> writes:

> On 04/08/09 16:30, Alan Burlison wrote:
>> V Narayanan wrote:
>>
>>> Have you already seen this
>>> http://wiki.apache.org/db-derby/ReplicationWriteup ?
>>>
>>> You will find step by step instructions to get replication started
>>> there!
>>
> I am not sure if you wanted to ask two separate questions or a single
> question, I will treat them as two separate questions
>> How do you 'fail back' to the master?
>
> fail back = auto failover?
>
> You mean after you failover and your slave becomes your new master,
> how will you fail back to the old master?
>
> You will have to restart replication on the slave (i.e.) you will have
> to do the freezing, copying data files again on the
> slave.

We discussed this problem a while ago, and there were some suggestions
of how to fail back to the master with as little downtime as
possible. See here for the details:

http://www.nabble.com/Replication---switching-back-after-failover-td19950674.html

-- 
Knut Anders

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