Re: Informix v7.24UC6 hangs

Hi Neil, If you can provide details in your Online logs and AF file output, I would probably able tell you if your problem was exactly what we had seen in 7.23UC5, which was related to setting of the SHMVIRTSIZE parameter on HP-UX paltform. If you are on HP-UX, there is a known problem in 7.2X on HP-UX with the use of the VIRTUAL shared memory segment. The workaround is to ensure there is only one such segment used by Informix. Any attempt to acquire any additional segment at runtime can cause the problem you have described. Use 'onstat -g seg' command to monitor the usage of such resource (the one belonged to class V'. If you have to set this parameter to a big value you must also configure the kernel parameter shmmax to bigger value in order to accomodate the increase in value for SHMVIRTSIZE. To find out how much your user sessions use such resource with command 'onstat - g ses'. From this you can determine what should be the initial value for SHMVIRTSIZE so that it will never cause new segment allocation at runtime. As a guide to your feeling how much you should allocate to such resource, we have system running with value from 90000 (90 MBytes) to 150 (Mbytes) for such variable. Hopes this helps. Regards Tim Lim In article <74cad3$m2c$1@taliesin.netcom.net.uk>, "Neil Truby" <ntruby@netcomuk.co.uk> wrote: > We're using V7.13 on HP-UX 10.20. This weekend we've tried to upgrade to > V7.24UC6. > > After some time, perhpas an hour and a half, Informix suddenly hangs. We > can't connect to it, even to do an onstat -. I can't kill the oninits, they > just "ignore" a kill -9. I've tried all this with both a shared memory and > a network connection, but it's just the same. We're going to have to back > out. > > Has anyone else had similar problems by any chance? > > Thanks > > Neil Truby > aracnet Limited > Weybridge, UK > > -----------== Posted via Deja News, The Discussion Network ==---------- http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own