Is it possible to restore and recover the System tablespace using RMAN? I can't seem to allocate a channel in RMAN with the target database closed, and yet I know I cannot take the System ts offline in order to perform recovery.
If I have to manually restore the System ts, then how do I do that if all I have is one big backuppiece for the entire database? (Online complete backups are taken daily.)

Please help.

Dawn