UNIX for Advanced & Expert Users

There is a tomcat webserver running that is used to host a java application. Sometime the service goes down with error logs. I see the following error messages in /var/log/messages:


kernel: Out of Memory: Killed process 2990 (co).
Out of Memory: Killed process 25671 (httpd)
Out of Memory: Killed process 8914 (httpd).
Out of Memory: Killed process 9022 (httpd).
Out of Memory: Killed process 3018 (httpd)

Can someone guide me what i should do on this and what could be the problem?

Thanks,
Sandeep

Um, add more memory maybe?

But the memory results seems to be fine . Please see results below:

free -m
total used free shared buffers cached
Mem: 2015 2001 14 0 207 1567
-/+ buffers/cache: 226 1789
Swap: 0 0 0

2001/2015 is certainly near the limit, especially if you don't have any swap. Do you? (Sorry for asking -- this happened to me recently; swap had somehow failed at boot time and I was wondering why I was running out of memory all the time ...)

THis are the results that i gathered now. I have no info how to check if swap is available. can you please let me know on that and also i gathered the vmstat results. this is what i see:

vmstat
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
0 0 0 0 79616 251580 1495780 0 0 47 17 56 68 1 0 99

The "free" output already suggests that you have zero swap total, though it's hard to see from the space-stripped HTML rendering.

On Linux, swapon -s shows what swap you have active. On other platforms, try "apropos swap". On Solaris, it looks like the command is simply "swap".

so what do you think i should do now? i am sorry but i need help