Oralce 9i installer not working in Solaris 8

Question

Hello All,
When running Oracle 9i installer from Disk1 folder like this:
./runInstaller
I am getting error:
./runInstaller: syntax error at line 1: '(' expected.
I commented all lines (except last 2) in runInstaller script. Still getting same error:
***************modified script***************
#!/bin/sh
# The environment variable $SRCHOME cannot be set during the installation
#unset SRCHOME
#CMDDIR=`dirname $0`
#if [ "$CMDDIR" = "." ];then
# CMDDIR=`pwd`;
#fi
# Replace relative path with fully qualified path.
#if [ ! "`echo $CMDDIR|grep '^/'`" ];then
# CMDDIR=`pwd`/$CMDDIR;
#fi
#if [ x${PATH} != x ] ; then
# PATH=/usr/bin:/usr/ccs/bin:$PATH
#export PATH
#else
# PATH=/usr/bin:/usr/ccs/bin
# export PATH
#fi
#if [ x${LD_LIBRARY_PATH} != x ] ; then
# LD_LIBRARY_PATH=/usr/lib:$LD_LIBRARY_PATH
# export LD_LIBRARY_PATH
#else
#LD_LIBRARY_PATH=/usr/lib
# export LD_LIBRARY_PATH
#fi
cd /home/oracle/download/Disk1/install/solaris
./runInstaller $* &
***********modified script**************
looking forward for your help
Arun.

Answer 1

One update to my query:
I am trying to install Oracle9i for Solaris 8 SPARC version in Solaris 8 in Intel machine. Could it be the reason for this error.
Is Oracle 9i available for Solaris 8 in Intel machine?
Thanks
Arun.