Hi All,

I have installed Oracle VM in physical server of RAM 32GM

Now I have installing 2 VM in it. One of 8GB and other one 16 GB of RAM. First I have installed 8 GB its running fine. But when I m going to install 16GB RAM size server then its showing error message

Error :

Start - /OVS/running_pool/37_ABCVM001
PowerOn Failed : Result - failed:errcode=20000, errmsg=No enough memory to run vm(/OVS/running_pool/37_ABCVM001), required memory=16384.

StackTrace:
File "/opt/ovs-agent-2.3/OVSSiteVM.py", line 124, in start_vm
raise e

you need to add kernel parameters by adding below lines to /etc/sysctl.conf

shmmni 4096
shmall 2097152
shmmax 2147483648
semmsl 250
semmns 32000
semopm 100
semmni 128
file-max 65536
ip_local_port_range 1024 - 65000
rmem_default 1048576
rmem_max 1048576
wmem_default 262144
wmem_max 262144
kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default = 4194304
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 262144

only add missing lines only edit parameters lower than this example..

also add add the following lines to /etc/security/limits.conf

oracle soft nproc 2047
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard nofile 65536

reboot the system...

Thanks for your reply ....

are you trying to restrict/increase the size of RAM and HDD by editing this file?

rmem_max 1048576
is this the max memory size ????

rmem_max it sets maximum size of TCP receive window.
for memory we use shmmax (maximum size of shared memory segment). it takes integer and as bytes. so i gave integer limit of it.