Re: What would happen if..?

On 14 mar, 17:23, Ben <benal..._at_yahoo.com> wrote:
> 10.2.0.2 EE, aix 5.2 64bit
>
> I have seen the metric reported in Enterprise Manager several times
> for "Current Open Cursors Count" on one of our database's home page/
> screen. It's reporting it at 7828. This particular system has about
> 1200 individual sessions logged on during peak hours and drops down to
> about 500 during off hours. OPEN_CURSORS is set to 500 in this
> database.
>
> What I don't understand is exactly why this metric is being reported
> to me and if it is just a default value that it has decided once there
> are x number of open cursors the threshold has been crossed and I'm
> going to raise a warning.
>
> I guess what I'm really asking is, is there some magic number of open
> cursors that I should be worried about, or is it just reporting this
> open cursor count because by default there is a threshold set at 1200
> open cursors that it is at warning status.
>
> Is there some maximum number of open cursors for the entire instance
> that if we reach that number it's going to blow up shoot sparks out of
> the back of the server....

Hi Ben,

Yes, 1200 is the default, you can lookup that up in the OEM guide. Check whether there really are that many open cursors (~7828) when the alert is raised. IIRC there used to be a bug regarding this instancewide  statistic (I haven't kept the specifics though.)

Jerome Received on Fri Mar 14 2008 - 13:10:05 CDT