./runInstaller:cannot execute on Sun T5240

 Hi,All
When I issue the command ./runInstaller on my Sun T5240 having Solaris10 x86 it gives me the error saying "cannot execute".

I also tried the following as well:

bash-3.00$ sh -x ./runInstaller
+ unset SRCHOME
+ unset ORACLE_SID
+ dirname ./runInstaller
CMDDIR=.
+ [ . = . ]
+ pwd
CMDDIR=/u02
+ grep ^/
+ echo /u02
+ [ ! /u02 ]
+ [ x/usr/bin:/usr/ucb:/etc:. != x ]
PATH=/usr/bin:/usr/ccs/bin:/ usr/bin:/usr/ucb:/etc:.
+ export PATH
+ [ x != x ]
LD_LIBRARY_PATH=/usr/lib
+ export LD_LIBRARY_PATH
+ [ x = x ]
TMP=/tmp
+ export TMP
+ [ x = x ]
TMPDIR=/tmp
+ export TMPDIR
+ [ x != x ]
+ /u02/install/runInstaller SHOW_CUSTOM_TREE_PAGE=false