i have dell poweredgr 1800 server with xeon 64-bit processor

I have installaed Red Hat Enterprise Linux AS (v. 4 for 64-bit AMD64/Intel EM64T) on that and now trying to install
Oracle Database 10g Release 2 ( for Linux x86-64
but facinf following error when work is 81% done
pasting error from installation log file

INFO: Exception thrown from action: make
Exception Name: MakefileException
Exception String: Error in invoking target 'install' of makefile '/u01/oracle/product/10.2.0/db10g/ctx/lib/ins_ctx.mk'. See '/u01/oracle/oraInventory/logs/installActions2006-05-03_12-05-23PM.log' for details.
Exception Severity: 1
INFO: *** Cancel Dialog: ***
INFO: User Selected: Stop installation of this component only.
I have completed all pre requisites, what could be the problem?

Same type of error i see when i try to install application server 10g R2 i.e
"Error in invoking target 'dm_on_ioracle' of makefile '/u01/rdbms/lib/ins_rdbms.mk' see logfile.... "

any clue?