Re: DB cluster sharing between 32 and 64 bit software versions

[Bill Moran <wmoran(at)collaborativefusion(dot)com>]

In response to Ireneusz Pluta <ipluta(at)wp(dot)pl>:

> Hello,
> 
> I am going to build a new PostgreSQL dedicated server, on FreeBSD. Before it goes to production 
> service I need to make some tests and take configuration decisions, focused on my application needs. 
> Usual thing. One of them is selection of one of 32 or 64 bit versions of both OS and PG. What I am 
> going to do is to install both versions on different filesystems of the same machine. As a 
> consequence I would also have to deal with two independent copies of my real databases on which I 
> want to perfrom my tests. However, the databases are rather large, so I am thinking about 
> possibilities of not to have to restore two copies of my data, but use just one instead, and sharing 
> it between the 32 and 64 versions, across reboots.
> 
> Would that scenario work, or I am simply too naive considering it?

It won't work, unfortunately.  The on-disk representation of the data is
different between ia32 and amd64.

-- 
Bill Moran
Collaborative Fusion Inc.
http://people.collaborativefusion.com/~wmoran/

wmoran(at)collaborativefusion(dot)com
Phone: 412-422-3463x4023