I did as you said(copied from prod to stdby),but same err.


SQL> alter database create datafile '/mnt/db/oracle/oradata/ISDB/isdata11.dbf'
2 as '/mnt/db/oracle/oradata/ISDB/ishdata10.dbf';
alter database create datafile '/mnt/db/oracle/oradata/ISDB/isdata11.dbf'
*
ERROR at line 1:
ORA-01516: nonexistent log file, datafile, or tempfile
"/mnt/db/oracle/oradata/ISDB/isdata11.dbf"