Re: Problem with large table not using indexes (I think)

I thought that you only need to use the -z flag if the distribution of 
the data is changing.

Jeff Frost wrote:
> On Sat, 23 Dec 2006, Benjamin Arai wrote:
>
>> The largest table in my database (30GB) has mysteriously went from 
>> taking milli-seconds to perform a query to minutes.  This disks are 
>> fine and I have a 4GB shared_memory.  Could this slow down have to do 
>> with the fsm_max_pages or something else like that?  I made it larger 
>> but the queries still taking a long time.  I do daily vacuum's but I 
>> don't run it with -z or --full.  I would like to avoid doing a --full 
>> if possible because it would literally take over a week to complete.  
>> Any help would be greatly appreciated.
>
> Benjamin,
>
> When is the last time you ran ANALYZE?  That's what the -z option 
> does.  If you're only vacuuming once daily, you should definitely 
> analyze with the -z flag as well.
>