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Database syncronization Database syncronization

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Old 04-09-2008, 05:22 AM
Lowell.Hought@faa.gov
 
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Default Database syncronization
What is the most effective method for syncronizing a database from a main
to a backup machine? I am now running 8.0. Is it necessary to drop the
database from the secondary machine and restore it from a dump of the
primary?

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  #2 (permalink)  
Old 04-09-2008, 05:22 AM
Richard Huxton
 
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Default Re: Database syncronization
Lowell.Hought@faa.gov wrote:
> What is the most effective method for syncronizing a database from a main
> to a backup machine? I am now running 8.0. Is it necessary to drop the
> database from the secondary machine and restore it from a dump of the
> primary?

Depends on how often/up-to-date you want to be. In order of delay, they are:

1. pg_dump / pg_restore
2. PITR + WAL-file shipping
3. Replication (e.g. Slony)

Check the manuals for the first two. There are other replication
projects available if Slony isn't quite right for you.
--
Richard Huxton
Archonet Ltd

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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
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