FARRUKH,

RMAN is not that easy to setup ..RMAN setting up to disk is child's play .But as a DBA you need to configure with the media manager and backup the databases to the tape .While relinking the oracle executables one should know as much as the OS administartion also ....

This differs from OS to OS ,version to version ...

It is just not create catalog .RAMN is set and running up ...

There is much more involved ...