Peruser Checkpointing Questions
I've got a couple of questions about peruser checkpoints that I hope someone could help me with. (Sun Java(tm) System Messaging Server 6.2-6.02 (built Apr 25 2006)).
1) Is there a way to manually run a checkpoint or mimic the same activity it does?
2) What factors determine how long a peruser checkpoint will take to run? Say it's taking much longer than normal (several hours instead of 10-15 minutes is something we've seen in the paste), is there a way to figure out what caused that?
Thanks!
Matt
# 1
> I've got a couple of questions about peruser
> checkpoints that I hope someone could help me with.
> (Sun Java(tm) System Messaging Server 6.2-6.02
> (built Apr 25 2006)).
>
> 1) Is there a way to manually run a checkpoint or
> mimic the same activity it does?
I know of no way to do that.
>
> 2) What factors determine how long a peruser
> checkpoint will take to run? Say it's taking much
> longer than normal (several hours instead of 10-15
> minutes is something we've seen in the paste), is
> there a way to figure out what caused that?
Many things affect the amount of time it takes to checkpoint the db.
Several hours, though, points to problems. Most likely, you're running out of disk I/O bandwidth. Check for that.
Things you should be doing to "tune" your server can be found here:
http://ims.balius.com/resources/downloads/files/iMS-Tuning-Guide.21.pdf
Pay particular attention to:
store.dbtmpdir
store.dbcachesize
settings. Any change here requires a full server restart.
>
> Thanks!
>
> Matt
