Re: Online hangs during oninit after reboot.
Posted in 1997
Topics: Server Administration, Platform-Specific Issues
Mark Stannard wrote:
>
> Folks
>
> We are running Online Dynamic Server 7.23.UC1 on an RS6000 with AIX
> 4.14. Currently we reboot the machine every Saturday morning. Several
> times the Online instance has hung during the Initialization phase after the
> reboot. Has anyone else seen anything like this? We shut the server
> down with an onmode -ky and restart it with oninit.
>
If you have users connected to the system it is possible that the OS is
keeping alive the tcp threads, this can be checked with a netstat -a -
look for FIN_WAIT conditions. If this is the case then the OS will not
release the SHM until the threads close, typically 15 minutes.
BTW I have also noticed that onmonitor-mode-immediate_shutdown seems to
close the network properly whereas onmode -ky doesn't. Why I have no
idea, but I have seen it on both Dynix and Solaris systems.
--
Paul Watson
WF Software Ltd.
Tel: +44 1436 674729
Fax: +44 1436 678693
Email: paulw@wfsoftware.co.uk