SQL> alter database create datafile 'C:\ORACLE\PRODUCT\10.2.0\DB_1\DATABASE\UNNAMED00005' as 'D:\oradata\mystd\sales01.dbf'; If the standby is in ASM + OMF then use the below command, SQL> alter database create datafile '/oracle/product/GSIPRDGB/dbs/UNNAMED00210' as <'+ASMDISKGR...