FW: [SunHELP] random login issue and process problems

[Markham, Richard]

I wanted to post this out on the list for any users who run into a simular
situation in there EMC/SUN environment. This problem was finally resolved
going on close to month now.

Our OS would hang randomly and come to find out it was a known bug in EMC
Powerpath 4.0.X which would cause a wait or hang state regarding the
metadevices on systems which are running Solstice Disksuite on the root
disks.
Thankfully no evident corruption occured.

The fix was simply to upgrade to EMCPower 4.1


-----Original Message-----
From: Markham, Richard [mailto:RLMarkham at hafeleamericas.com]
Sent: Tuesday, January 20, 2004 8:28 PM
To: 'sunhelp at sunhelp.org'
Subject: [SunHELP] random login issue and process problems


I wasn't able to login today using console, ssh or telnet on my headless
V880.
The login method used will authenticate but the session hangs and does not
give
a shell prompt.  At this same time our users lost their WEB (FORMS)
connections
to the Oracle E-Business suite.  The server would respond to ping, that's
about 
it.  After having to hard reset the server I check /var/adm/messages which
had
no errors in it.  The server has 8gb RAM, 4CPU's an performs exceptionally
well.
This problem exhibits itself out of the blue.  I have allocated a 6gb slice
for
swap.  I have a hard time believing that this issue is resource related
unless 
there are default maximums that I'm unaware of.  I report daily on resource
usage
and we have lots free. The same OS account spawns all processes.

My /etc/system shared mem and semaphores are as follows:
set shmsys:shminfo_shmmax=8388608
set shmsys:shminfo_shmmin=1
set shmsys:shminfo_shmseg=10
set semsys:seminfo_semopm=100
set semsys:seminfo_semmns=0x13d
set semsys:seminfo_semmni=0xc
set semsys:seminfo_semmsl=0x81
set semsys:seminfo_semmap=0x13d
set semsys:seminfo_semmnu=0x13d 


17 days ago I had this exact same problem.  This ~exact~ same problem has
occurred
15 days on my SF4800 database server.  We recently upgraded the servers from
two
E420R's.  The only thing that I can think of that is significantly different
is
that the Recommended patch cluster is 6 months newer (DEC 04,2004) over the 
configuration we have had in place on lesser servers for the past two years.
I haven't had to set any user session or number of process settings over the
past
three years, but if anyone could advise anything worth trying I'm game.

Thanks in advance for anyone's input.  I currently screening the January 19,
04 
patch cluster to be applied this weekend.

Solaris 8 DEC04 '04 Recommended Cluster
Oracle E-Business Suite.
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