How to set -Xss or ulimit for Oracle Http Server

Question

Hi,
We are facing Out of Memory Error in OHS 11g in our cluster environment. Where I can see below statements in http log file:
# There is insufficient memory for the Java Runtime Environment to continue.
# Cannot create GC thread. Out of system resources.
# Possible reasons:
# The system is out of physical RAM or swap space
# In 32 bit mode, the process size limit was hit
# Possible solutions:
# Reduce memory load on the system
# Increase physical memory or swap space
# Check if swap backing store is full
# Use 64 bit Java on a 64 bit OS
# Decrease Java heap size (-Xmx/-Xms)
# Decrease number of Java threads
# Decrease Java thread stack sizes (-Xss)
# Set larger code cache with -XX:ReservedCodeCacheSize=
# This output file may be truncated or incomplete.
#  Out of Memory Error (gcTaskThread.cpp:46), pid=17956, tid=140591807985408
When I run the ulimit command on machine, stack size is showing as 10MB:
Result:
[oracle@XXXXXX bin]$ ulimit -a
core file size          (blocks, -c) unlimited
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 1031958
max locked memory       (kbytes, -l) 3500000
max memory size         (kbytes, -m) unlimited
open files (-n) 131072
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 10240
cpu time (seconds, -t) unlimited
max user processes (-u) 131072
virtual memory          (kbytes, -v) unlimited
file locks (-x) unlimited
Setting the stack size to 512KB or 256KB might resolve the problem.
I tried setting ulimit -s 512  in my user bash_profile. and ran ulimit -a , then it is showing as 
stack size (kbytes, -s) 512
If I set at user level, does it have any impact? Or we should set at JVM level using -Xss
Can some body tell me where can I set -Xss for Oracle HTTP server 11g?
Regards,
Vidya

Answer 1

Hi Marco,
I believe you'll need to setup a MX record under 'More Actions' for your domain in Site Settings / Site Domains.
Select the option "Use another external service for email" and enter your primary mail server's hostname at priority 10.
Think you can repeat this step for your secondary mail server (priority 20) if you have one.
Regards
Mike