10g R2 Discoverer Error on Linux(RHEL5)

Dear All,

Installation of Oracle Server 10g R2 was successful on Enterprise Linux R5 GA Server (RHEL5) and successfully started infrasturcture and middle tier but Discoverer

# cat Discoverer~PrefereceServer~1

/u01/OraHome_2/bin/dis51pr: error while loading shared libraries: libpthread.so.0: cannot open shared object file: No such file or directory

# cat Discoverer~ServicesStatus~1

/u01/OraHome_2/bin/DiscSrvcStat: error while loading shared libraries: libm.so.6 cannot open shared object file: No such file or directory

However file exists on file system

# find / -name libpthread.so.0

/u01/OraHome_1/lib/stubs/libpthread.so.0
/u01/OraHome_2/lib/stubs/libpthread.so.0
/lib/i686/nosegneg/libpthread.so.0
/lib/libpthread.so.0

# cd /lib

# ls -l libpthread.so.0 libm.so.6

lrwxrwxrwx 1 root root 17 Feb 9 10:26 libpthread.so.0 > libpthread-2.5.so
lrwxrwxrwx 1 root root 17 Feb 9 10:26 libm.so.6 > libm-2.5.so

Can anybody tell me why dis51pr and DiscSrvcStat are unable to find that files when they are exists on the system. Please help me in starting

# ./opmnctl startproc process-type=PreferenceServer

Error:
failed to start a managed process after the maximum retry limit

Please help me in resolving this issue

Regards,
HPNX