Out of memory - Cannot alocate 2gb memory to SGA - SUsE 9 / 10gR2

Question

I need help, please !!!!
Cannot alocate > 2gb memory to SGA
SHMMAX:
SUsE:/home/oracle # /sbin/sysctl -p
kernel.shmall = 2097152
kernel.shmmax = 3221225472
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 = 1048576
net.core.rmem_max = 1048576
net.core.wmem_default = 262144
net.core.wmem_max = 262144
vm.disable_cap_mlock = 1
SUsE:/home/oracle #
When startup database:
ORA-27102: out of memory
Linux Error: 12: Cannot allocate memory
Additional information: 1
Additional information: 4620291
Dell powered 2800 - 6gb memory
SUsE 9
Oracle 10g Std.

Answer 1

You're most likely correct - I have been running without issue with the existing kernel params and SGA set to 1536M - but at this point, I just want to get back to my original settings to start the first node, then do additional research on the kernel params and SGA settings. So, any help in setting the SGA back to what I had previously would be most appreciated.
Here are my kernel params:
kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
net.ipv4.ip_local_port_range = 1024 65500
net.core.rmem_default = 1048576
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max =1048536