We're setting up an Oracle server on RHAS v.3.0.
When attempting to create the database we keep getting the following error:

ORA-27123: unable to attach to shared memory segment

The DB memory is about 3.8 Gig.
The server has 8 Gig physical memory
I've set shared memory (shmmax=4187593114 #3.9 Gig)
Swap is 4 Gig

And I still get that same error.
Am I missing something?

[root@entportora2 root]# ipcs -l

------ Shared Memory Limits --------
max number of segments = 4096
max seg size (kbytes) = 4089446
max total shared memory (kbytes) = 8388608 min seg size (bytes) = 1

------ Semaphore Limits --------
max number of arrays = 128
max semaphores per array = 250
max semaphores system wide = 32000
max ops per semop call = 100
semaphore max value = 32767

------ Messages: Limits --------
max queues system wide = 16
max size of message (bytes) = 8192
default max size of queue (bytes) = 16384

Please help....

try here:

http://www.puschitz.com/InstallingOracle9i.shtml

Thanks born4linux, i've seen all that and used it but, I'm still getting the error.

I've actually opened a ticket with Redhat. There must be something else I'm missing.

Thanks

ooops. sorry. i didn't notice the 'memory/swap' specs that you have. how much is the transaction rate you are expecting for that server?

not real sure yet. It's a replacement database that our call center employees use all across the country so, it will be failry high in that regards.