The following are the steps that I used.

1. Add oracle user and some other stuff

   # groupadd dba
   # useradd -g dba oracle
   # cd /opt
   # mkdir oracle
   # chown oracle:dba oracle
   # cd /opt
   # ln -s path/to/jre1.6.0_11
   (Edit the Disk1/install/linux/oraparam.ini and modify JRE_LOCATION
   variable and set path to our JRE installation from Step 2.
   JRE_LOCATION=/opt/jre1.6.0_11)

2. Kernel settings – Edit the /etc/sysctl.conf and add following lines (I decided to leave default values and did not modify any of these.  These have to be verified)

   kernel.sem = 250 32000 100 128
   kernel.shmmax = 2147483648
   kernel.shmmni = 128
   kernel.shmall = 2097152
   kernel.msgmnb = 65536
   kernel.msgmni = 2878
   fs.file-max = 65536
   net.ipv4.ip_local_port_range = 1024 65000

Note: You need execute “sysctl -p” or reboot system to apply above settings.

1. create access list for oracle to use xwindows

   # xhost +local: oracle (with no space inbetween oracle)

2. Check for required packages:

   rpm -q compat-db compat-gcc-34 compat-gcc-34-c++ compat-libgcc-296 compat-libstdc++-296 compat-libstdc++-33 gcc gcc-c++ glibc glibc-common glibc-devel glibc-headers libgcc make libXp

3. Set environment – add these to /home/oracle/.bash_profile

   ORACLE_BASE=/opt/oracle
   ORACLE_HOME=$ORACLE_BASE/920
   ORACLE_SID=ORCL
   LD_LIBRARY_PATH=$ORACLE_HOME/lib
   PATH=$PATH:$ORACLE_HOME/binexport ORACLE_BASE ORACLE_HOME ORACLE_SID LD_LIBRARY_PATH

4. First Workaround

   su -
   cd /usr/lib
   ln -s libstdc++-3-libc6.2-2-2.10.0.so libstdc++-libc6.1-1.so.2

5. Download and Install:

   rpm -ivh http://oss.oracle.com/projects/compat-oracle/dist/files/RedHat/compat-libcwait-2.1-1.i386.rpm
   rpm -ivh http://oss.oracle.com/projects/compat-oracle/dist/files/RedHat/compat-oracle-rhel4-1.0-5.i386.rpm -nodeps

6. Second Workaround

   su -
   cd /usr/bin
   ln -s gcc34 gcc32

7. Third Workaround

   su -
   cd /usr/lib
   ln -s libgdbm.so.2.0.0 libdb.so.2

8. Run installer

   ./runInstaller

9. When NETCA/DBCA will fail
10. Fourth Workaround

    I suggest to apply 9.2.0.8 patchset before.
    cd $ORACLE_HOME
    rm JRE
    ln -s $ORACLE_BASE/jre/1.3.1 JRE
    cd JRE/bin
    ln -s java jre
    cd i386/native_threads/
    ln -s java jre