RE: IDS Authentication Problem on AIX
Posted in 2006
> -----Original Message-----
> From: informix-list-bounces@iiug.org [mailto:informix-list-
> bounces@iiug.org] On Behalf Of RoB
> Sent: Friday, November 03, 2006 4:42 AM
> To: informix-list@iiug.org
> Subject: Re: IDS Authentication Problem on AIX
>
> >Hello Rob,
> >
> >It is a known problem. I don't have the PMR & Bug number, it is
> >somehow alleviated by TL05. Shortly put, there is a memory leak
> >when calling a specific OS function (crypt) and it manifests with all
> >long running programs calling it (Informix/Db2/...).
> >
> >You can test it for yourself (as we did), generating connections
> >to the database (doing nothing and exiting as soon as possible,
> >as many connections you can do). After about 1.3 Mil connections
> >on pre-TL05 and after about 4.2 Mil connections on post-TL05
> >you hit this limit.
> >
> >We are also interested in a more permanent solution - as it is now,
> >we still have to bounce the engine once 3-4 weeks of activity.
> >If you get more information about this, please notify me also
> >(or post in the newsgroup).
> >
> >Regards,
> >Bogdan BOTEZ.
>
>
> Bogdan kindly emailed me to point us in the right direction. We
> contacted Informix support again and there doesn't seem to be a
> solution to this problem as of yet. The cause of the problem seems to
> be related to the total amount of CPU time spent on the msc-VP (last
> column of:onstat -g glo|grep " msc "|tail -1) so when it gets above a
> certain level then the problem will start occurring. Once identified
> (write a simple script that opens up and closes a lot of connections
to
> a database on the server), this could be used as a metric to decide
> when to bounce the instance (until the AIX blokes finally get around
to
> fix this).
>
> Thank you all for your input!
>
> RoB
>
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Is this the same as the issue at
http://www-1.ibm.com/support/docview.wss?fdoc=imids&rs=630&uid=swg212119
41 ("MSC VP leaks memory using LDAP accounts on AIX 5.3 ML01 / ML02")?
The behavior sounds pretty similar, and there is a APAR listed for that
one.
Thanks.
DC