Hi group,

OS: AIX 5300-05 Service Pack 1
IDS: 10.00.FC5

IHAC that is running into some nasty problems on the latest version of
AIX where an IDS instance is reporting a OS authentication problem of
all users trying to connect to the instance (even for the informix
user). All existing connections seems to get dropped and it becomes
impossible to reconnect.

....
10:41:33 WARNING: mt_aio_wait: errno == EINVAL
10:41:33 listener-thread: err = -951: oserr = 2: errstr = userA@hostA:
Incorrect password or user userA@hostnameA is not known on the database
server.
System error = 2.
....

The problem happens quite sporadically and has been seen to start after
between 10 to 25 days of the instance being online. The only known
solution is to bounce the instance but that isn't acceptable for a live
24x7 system.

A call has been raised with Informix support (PMR 02830,019,866 btw for
you ambitious IBM techies) and after applying all the recommended OS
patches, we are still having the problem.

We're in the process of applying the next two service packs available
for this version of AIX (both were released last month so I'd guess
there are plenty of bugs present) but as this system is to be taken
into production soon, it will definately present a critical problem if
the problem re-occurs then.

There is now a second instance on the same machine but that one didn't
show the problem last time it occurred on the first instance so perhaps
this isn't an AIX issue but a purely IDS one.

Has anyone experienced the same type of problem? Tech support doesn't
seem to have an answer to it.


RoB