[SOLVED] Java "Could not reserve enough space for object heap"

Lorian · 09-12-2010, 11:21 AM

Hi all,

I'm having trouble setting Java up on my virtual private server. It works fine when running under root, but if I run it under a normal user account I get this error message:

Quote:

Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.

Presumably the memory allowed to be used is being limited, but I can't figure out how to change it. I've tried adjusting the -Xmx argument, but the highest value at which it will work is 18MB, which is not enough.

This is the ulimit output for the root and user accounts respectively:

Code:

# ulimit -a
core file size          (blocks, -c) 1000000
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 139264
max locked memory       (kbytes, -l) 32
max memory size         (kbytes, -m) unlimited
open files                      (-n) 4096
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 14335
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

Code:

$ ulimit -a
core file size          (blocks, -c) 200000
data seg size           (kbytes, -d) 200000
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 139264
max locked memory       (kbytes, -l) 32
max memory size         (kbytes, -m) 200000
open files                      (-n) 100
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 20
virtual memory          (kbytes, -v) 200000
file locks                      (-x) unlimited

I suspect the problem is due to the virtual memory, but there doesn't appear to be any way to set the value in limits.conf. If I manually lower it to 200000kB under root I get the same error message.

Any help would be appreciated.

Thanks.

Edit: I'm using Red Hat x86_64, kernel 2.6.18-028stab070.2.

Lorian · 09-12-2010, 04:47 PM

Figured it out. cPanel has injected code in various places to set the ulimit values; the following files need to be adjusted to change these values:

/etc/profile
/etc/bashrc
/etc/profile.d/limits.sh

sahni_h · 06-12-2012, 07:11 PM

Hey, can you explain how exactly you went about fixing this as I am running into the EXACT same problem. I am also running the same linux server and using cpanel.

What exactly do I edit in those files? I cannot even find those files in the etc directory.

I can find bashrc and bash_profile in my home directory but don't know what to do with them.

Any help will be greatly appreciated. Thanks.