I have installed oracle 11g XE Release 11.2.0.2.0 - 64bit and sqlplus runs fine on this (directory --> /u01/app/oracle/product/11.2.0/xe/bin) +
I have also installed separately oracle instant client -basic and devel both 11.2.0.2.0 (in /usr/lib/oracle/11.2/client64) and upgraded the LD_LIBRARY_PATH as -----> export LD_LIBRARY_PATH=ls /usr/lib/oracle/11.2/client64/lib & then export LD_LIBRARY_PATH=$ORACLE_HOME/lib.
Now on running a sample program by this: proc iname=hellodb.pc MODE=ORACLE it says Proc command not found.
find / -name "proclab*"