I'm certain it was -f, not -F, since it's still in the script I use, albeit 
commented out. 

I understand the purpose of the clogs, but I would think that the transactions 
would have been frozen on all dbs (I've got about 300 in my cluster) by now. My 
logs go back to July 13th which, I think, is when the server was last 
restarted. 

I'll try the -F on Sat and see if that resolves the issue. I'll also have logs 
available at that time, assuming all goes well. 

Thanks for the advice. 




Scott Whitney <sc...@journyx.com> wrote: 

> Each Saturday, I run: vacuumdb -a -v. I have autovac on all the 
> time. 
> 
> However, my pg_clog directory lists clog files going back to 
> July. 
> 
> This is pg 8.4.4 on Linux (CentOS 5.5). 
> 
> I know this isn't a whole lot of information at this time. What 
> more would be useful in finding out what's failing and where? 

Nothing is failing -- clog is needed to track what has committed 
until transactions are "frozen". 

> I seem to recall that doing vacuumdb -f -a -v resolved it 

Are you sure that wasn't -F rather than -f ? The uppercase switch 
freezes tuples, which would allow clog to be cleaned up. This 
shouldn't normally be needed, unless you have some other reason to 
need aggressive freezing. 

-Kevin 

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