Some things coming to my mind:

1) Are you using a lot of indices and/or compound indices? Sometimes when you 
have large tables, loading those indices the first time, takes a while. So 
there is a fine balance between too many and not enough indices; we have 
noticed with FB. As such, after every server restart, we "warm up" the database 
to get it going.

2) If your DB is too fragmented, consider writing it to a flat-file, and 
restoring it; as shown in the FB docs.

3) How is your underlying storage medium doing? Enough free disk space? 
Consider deploying on SSDs.

With Kind Regards,

Dennis Gaastra, 
Chief Technology Officer,
WEBAPPZ®  Systems, Inc.





On 2010-03-13, at 4:44 PM, Jeff Schmitz wrote:

> While running some stress tests I seem to be able to get my database 
> (Frontbase) in a state where fetch times take an inordinate amount of time 
> (e.g. fetches that return no rows take a minute), and once in that state, 
> even a reboot of the machine won't fix the problem.  Is there anyway to 
> recover such a database?  I'll be perusing the Frontbase for any ideas, but 
> from experience, is such behavior symptomatic of any particular problem?  
> I've been running several years and haven't until now seen such behavior.
> 
> Thanks,
> Jeff
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