Ubuntu 9.10 + Oracle 11gR2

First prereqs:

sudo apt-get install build-essential libaio1 libaio-dev lesstif2 lesstif2-dev libc6-i386 libc6-dev-i386 gawk ksh libmotif3 alien libtool lsb-rpm lib32stdc++6 lib32z1 ia32-libs sysstat rlwrap unixodbc unixodbc-dev elfutils rpm x11-utils ksh libxp6

wget http://ftp3.nrc.ca/debian/pool/main/g/gcc-3.3/libstdc++5_3.3.6-18_amd64.deb
dpkg -i libstdc++5_3.3.6-18_amd64.deb

Into /etc/sysctl.conf:
fs.file-max = 6815744
kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
net.ipv4.ip_local_port_range = 1024 65535
net.core.rmem_default = 1048576
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
fs.aio-max-nr = 1048576

Into /etc/security/limits.conf
oracle soft nproc 2048
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard nofile 65536

and the other usual stuff.

When you get the nnfyboot error:

export LD_LIBRARY_PATH=$ORACLE_HOME/lib
ln ­s /usr/bin/basename /bin/basename
ln ­s $ORACLE_HOME/lib/libclient10.a $ORACLE_HOME/lib/libagtsh.a
$ORACLE_HOME/bin/genagtsh $ORACLE_HOME/lib/libagtsh.so 1.0

and then retry.