Hi im trying to install oracle 12c database on ubuntu and got this error which i cant figure out

ORA-27104

http://imgur.com/24gauEv

when i click on ignore
ORA-01034 error

and than

[INS-20802] Oracle Database Configuration Assistant failed.

I edited my /etc/sysctl.conf file

which is now

#Added for fresh Oracle 12cR1 Installation
kernel.sem = 250 32000 100 128
# Assumes all of a 5120MB RAM is allocated, using 4K pages
kernel.shmall=8388608 (=32*1024*1024*1024 / 4096) - 4096 is page size
# Assumes half of a 5120MB RAM is allocated, in bytes
kernel.shmmax=34359738368 (=32*1024*1024*1024),
kernel.shmmni = 4096
kernel.panic_on_oops = 1
fs.file-max = 6815744
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
fs.aio-max-nr = 1048576


any ideas what's may be the problem?