ORA-12546 on Linux 6.0

I have installed oracle 8 server (version 8.0.5.0.0) on a Linux Redhat 6.0 server (i applied the suggested patch to let oracle 8 use glib2.0). I have created a database and i am able to startup and mount the database as a ORACLE_OWNER. Also, I am able to connect to SQLPLUS when i am logged in as ORACLE_OWNER. But when i try to use sqlplus (or for that matter connect to database through any other medium) when i am logged in as a different user, i get ora-12546: TNS: Permission denied error. I saw some news messages suggesting me to do the following:
> > chown oracle.dba $ORACLE_HOME/bin/tnslsnr
> > chmod 750 $ORACLE_HOME/bin/tnslsnr
> > chown oracle.dba $ORACLE_HOME/network/log
> > chmod 775 $ORACLE_HOME/network/log
> > chown root.dba $ORACLE_HOME/network/log/listener.log
> > chmod 664 $ORACLE_HOME/network/log/listener.log
and i did them but i still do get the same error.

I want to be able to obtain a database connection through php3 module to the oracle database and with this permission denied error i am not able to proceed. Received on Thu Sep 02 1999 - 12:28:41 CDT