Command Not Found Error?

Hi,
I am beginer to Linux. I have installed Redhat Linux AS 4.0 on my System.Later I created a User Oracle10g for Installing Oracle.Then I logged onto Oracle10g user and crated a Bash Profile and when I run that profile there was an error in that Profile. from then If I type any of Linux Command like LS, PWD etc i am getting an error like Command not found.
So Please help me out with this. I will be very greateful to you..

I am curious. Are you typing those command in capital letters like you did in the post? It is case sensitive so you need to type it lowercase like ls and pwd, not LS and PWD.

Just for Understanding I have mentioned it in Capital Letters.I have typed those letters only in Lower Case.. Is there any possiblity of getting my problem solved..

Post the contents of your bash profile and the error that you're getting.

Hi,
Thank you for you reply.. here is the bash Profile Details under User Oracle10g

export ORACLE_SID=ORCL
export ORACLE_HOME=/oraeng/app/oracle/product/10.2.0
export LD_LIBRARY_PATH=$ORACLE_HOME/lib,/usr/ucblib,/usr/openwin/lin
export PATH =$ORACLE_HOME/bin:/bin:/usr/bin:/usr/ccs/bin:/usr/ucb/bin:$PATH:.
export CLASS_PATH=$ORACLE_HOME/jlib

When I ran this profile, I got an error saying the error in bash profile.
and Later when I tried to edit profile using vi or use other Commands, I am getting an error like command not found.
But All command worked very fine when I logged in as Root user..

Thank you in advance...

When logged in as your new user what is the output of the following

echo $PATH

how about using which command?
i.e
#which pwd or #which ls

does the su command work when logged in as that user?

is it possible the user and the group they are assigned to are non-privileged? That is they do not have the capability to run basic unix commands?

Can you cd to /usr/bin? Wait are you trying to run these commands from the sql command line interface? Or from the unix command line?