oracle venu> ls
oracle venu> rm *.log
oracle venu> ls
RMAN> validate database;
RMAN> shutdown abort
RMAN> startup mount
RMAN> list failure;
RMAN> restore database;
RMAN> recover database;
RMAN> sql 'alter database open';
RMAN> list failure;
RMAN> advice failure;
RMAN> repair failure;
RMAN> list failure;