Hi Brwn,
I tried what you said but, it
RUN {
2> ALLOCATE CHANNEL CH1 TYPE DISK;
3> RESTORE CONTROLFILE FROM FILE '/backup/prod/backup/full/rman_PROD_601742701_0jhtrnbd.bus';
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00558: error encountered while parsing input commands
RMAN-01005: syntax error: found "identifier": expecting one of: "tag"
RMAN-01008: the bad identifier was: FILE
RMAN-01007: at line 3 column 26 file: standard input

Got the above error.
Any idea?.