Cloning Oracle Database Without Connecting Catalog and Target using rman

Cloning oracle database without accessing target database or rman catalog. Only we need is a full rman  backup including controlfile and parameter file. Below given is the step to achieve this.

Step 1:Take Backup of Target database to a specific destination.

run {
allocate channel t1 type disk;
backup current controlfile format '/tem/bck/ctl_%d_%u_%s';
backup database format '/tem/bck/data_%d_%u_%s';
backup archivelog all format '/temp/bck/arch_%d_%u_%s';
release channel t1;
}