I don't know the details, but our DBA's had a problem after a recent update
and here is a copy of what they wrote:

After an Informix database software upgrade, I tried to run
a post-upgrade server backup using OnBar.  It kept failing.
The Informix rep first suggested taking both informix and
the adsm client down & back up.  Harold restarted the adsm client
daemon, and I dropped informix.  Back online, backup still failed.
Rep mentioned the server value.

We ignored him.  I went back to the ADSM Client README and rexecuted
all the steps again.  The 'ar' command rebuilt a larger bar????.o
file, so the new informix software must have put some libraries or
something out there that were no longer compatible and now built a
larger object.

OnBar worked after that.

Our informix tech rep disappeared on me for 2 days before calling back
to see "did it work?"

On Thu, 22 Jul 1999, McClean, Frank J. wrote:

> Hello,
>         We are having On-bar failures after upgrading Informix from 7.24UC1
> to 7.30UC8.
>
> The failure from the bar_act.log is:
>                       1999-07-22 10:26:32 22858  22344
> /usr/informix/bin/onbar_d -b -L 0
>                       1999-07-22 10:26:36 22858  22344 Begin level 0 backup
> rootdbs.
>                       1999-07-22 10:26:36 22858  22344 XBSA Error (BSAInit):
> An unspecified XBSA error has occurred: 96
>
> There is nothing in the dsierror.log
>
> Environment: RS6000 SP
>                 server code: 3.1.2.20
>                 client code: 3.1.0.7 (previously 3.1.0.6 with the same
> failure)
>                 informix:  7.30UC8 (includes latest On-bar code)
>
> We have a PMR open with IBM and a trouble ticket with Informix.
>
> Any help or ideas on where to look for the problem would be greatly
> appreciated.
>
> Thanks,
>         Frank
> Frank J. McClean
> SP System Administration
> SMS Technical Services, Sutter Health
> mccleaf AT sutterhealth DOT org
> (916)454-8420 phone
> (916)454-8499 fax
>