#Recovers a ARCHIVELOG database from LOSS OF A DATAFILE
#Database is Open
#Datafile Recovery
run {
allocate channel c1 type disk;
allocate channel c2 type disk;
sql "alter database datafile ''/u1/ORACLE/reco/users01.dbf'' offline";
restore datafile '/u1/ORACLE/reco/users01.dbf' ;
recover datafile '/u1/ORACLE/reco/users01.dbf' ;
sql "alter database datafile ''/u1/ORACLE/reco/users01.dbf'' online ";
release channel c1;
release channel c2;
}