Hoping someone can provide pointers to fix the issue.
Windows 2008,itsm 7.6.03, oracl 11g.
All of a sudden we are seeing clients can not able to connect to
arserver, after ars restart.
All the clients are giving the same error that server is busy.
I am suspecting some thing changed on the environment(security/os
etc), but I have no way to prove that as all the connections at the
network/os level are working fine. We are seeing the same issue with
other servers in the servergroup also.

>From our internal diagnosis:
The server was never busy, by looking at the logs,cpu,memory
When tried to login through client, we can see on the server side
api,sql logs that arserver is authenticating the user successfully.
After the authentication we did not see anything else happening which
is causing the client to timeout.
So it seems like that the client is able to communicate with the
server, where as the server is unable to respond back to the client.
We tested with remote, as well as local client installed on the
server.

1. Disabled all McAfee processes
2. Disabled windows firewall
3. Connecting through a user tool installed on the server itself.
4. Tested with the driver utility under C:\Program Files\BMC Software
\ARSystem\Arserver\api\driver folder
5. Tested with the client side api logs turned on for developer
studio.
6. Tested with user tool both local and remote
7. Tested with midtier
8. Disabled preference server option.
9. Disabled Assignment Engine,Approval server, dispatcher, servergroup
option, escalation, sla,full text, email engine.
10.Disabled port mapper and using the direct tcp port number.
11. Verified with netstat and server is listening to the correct port
numbers.
12. We tried connecting the ars to a  different db(development), we
are still seeing the same issue, where as the the development ars
server has no issues. So it is telling me is not an issue with the db.

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