Hi everyone...

 

I have a database that is currently about 25 gigs on my primary DB
server running Postgres 8.2.9, and two others that are less than 1 gig
apiece.  The DB server is a quad proc, quad core, 64 gigs of memory, 5
drive RAID5 array, so it has plenty of horsepower.  Until about three
weeks ago I was running a nightly vacuum analyze and a vacuum full
analyze once per week.  

 

This is what I was running for the vacuum full command:

vacuumdb -a -e -f -z -v  -U postgres

 

The nightly vacuums have been working flawlessly, but about three weeks
ago the vacuum full started failing.  It was taking about 5-10 minutes
normally, but all of a sudden it started hitting the command timeout
that I have set, which is at 60 minutes.  I thought that it may be a
corrupt table or a large amount of content had been deleted from a
database, so I built a script to loop through each database and run a
vacuum full analyze on each table individually thinking I would find my
problem table.  The script finished in 5 minutes!  

 

This is what I'm running on each table now in my script:

vacuumdb -d $DB -t $TABLE -e -f -z -v  -U postgres

 

As I understand it, the "vacuumdb -a" command basically does the same
thing as my script.  So why is it timing out while my script finishes in
5 minutes or less?  Is the "vacuumdb -a" command doing something that
I'm not?  

 

Now that the holiday season is past I will be upgrading to the latest
8.2 release as soon as possible, but I need to get this figured out
first unless it's a bug that the upgrade fixes.

 

I'd appreciate any advice or explanations you guys can send my way.  

 

 

Thanks,

 

Scot Kreienkamp

La-Z-Boy Inc.

skre...@la-z-boy.com

734-242-1444 ext 6379

 

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