Christopher Browne wrote:
In the last exciting episode, [EMAIL PROTECTED] (Mark Kirkwood) wrote:
I agree with you for production environments, but for development,
test, support (and pre-sales) machines there are reasonable
requirements for several.


I still have to ask what *specifically* you imagine to be the
"potentially problematic" aspect of having multiple installations on a
production system.

Furthermore, I have to vigorously disagree with the claim, as I have a
counterexample that has no "potentially" about it.



Sorry Christopher, I wasn't being clear enough - I (and Mark W as well I *think*) were referring to multiple postgres clusters with *different* versions of the binaries (e.g. running 1 cluster with 7.4.10, another with 8.0.5 and another with 8.1.2) - as opposed to multiple clusters using the *same* binaries (e.g. three 8.1.2 clusters) - which I certainly have no issue with in any environment.

I was thinking that having several clusters with different versions of the software on a production box made for extra confusion (e.g "create the stored function on all the prod instances - oh yeah, don't forget to patch it for the 7.4 one....").

Having said that, I run *exactly* this configuration, as I tend to use my machines to replicate problems for customers (so I need whatever version *they* are running), but I guess that qualifies as a "support" installation in this discussion.

Cheers

Mark

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