Description:
Solaris 10 or 11.1 server was not accessible or the EMS server would hang.

Symptoms:
The Solaris 10 or 11 server was not accessible or the EMS server hung

Cause:
This could be due to a Solaris kernel defect:

Oracle Support Document 1619580.1 (Issues In Solaris 10 and Solaris 11.1 May Cause a System Panic ('devpoll_clean_fd') or A Network Outage) can be found at:
https://support.oracle.com/epmos/faces/DocumentDisplay?id=1619580.1

There are two issues described by this Alert for Bug 17628036:

Issue 1: A race condition between 'pollhead_delete()' and 'strclose->pollhead_clean' may cause a system panic. Prevalence of this issue varies but is usually associated with systems using Java applications.

Issue 2: The entire network may experience an outage, and multi-threaded Java processes cannot be killed (kill(1)).

NOTE: Patches 150400-06, 150400-07 and 150401-06, 150401-07 (specific to Issue 2 network outage) have been WITHDRAWN and are no longer available for download.