Recover From Redo Log File (After Lost Data File)

SQL> archive log list;

Database log mode No Archive Mode

Automatic archival Disabled

Archive destination USE_DB_RECOVERY_FILE_DEST

Oldest online log sequence 2

Current log sequence 4

SQL> select name from v$tablespace;

NAME

------------------------------

SYSTEM

UNDOTBS1

SYSAUX

USERS

TEMP

SQL> select file_name from dba_data_files;

FILE_NAME

-----------------------------------------------------------

C:\ORACLE\PRODUCT\10.2.0\ORADATA\DBA20\USERS01.DBF

C:\ORACLE\PRODUCT\10.2.0\ORADATA\DBA20\SYSAUX01.DBF

C:\ORACLE\PRODUCT\10.2.0\ORADATA\DBA20\UNDOTBS01.DBF

C:\ORACLE\PRODUCT\10.2.0\ORADATA\DBA20\SYSTEM01.DBF

SQL> create tablespace test

datafile 'C:\ORACLE\PRODUCT\10.2.0\ORADATA\DBA20\TEST01.DBF'

SIZE 1M;

Tablespace created.

SQL> create table test(id number) tablespace test;

Table created.

SQL> insert into test values(2);

1 row created.

SQL> insert into test values(5);

1 row created.

SQL> commit;

Commit complete.

SQL> select * from test;

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SQL> select tablespace_name,file_name from dba_data_files;

TABLESPACE_NAME FILE_NAME

---------------------------------------------------------------------------------------

USERS C:\ORACLE\PRODUCT\10.2.0\ORADATA\DBA20\USERS01.DBF

SYSAUX C:\ORACLE\PRODUCT\10.2.0\ORADATA\DBA20\SYSAUX01.DBF

UNDOTBS1 C:\ORACLE\PRODUCT\10.2.0\ORADATA\DBA20\UNDOTBS01.DBF

SYSTEM C:\ORACLE\PRODUCT\10.2.0\ORADATA\DBA20\SYSTEM01.DBF

TEST C:\ORACLE\PRODUCT\10.2.0\ORADATA\DBA20\TEST01.DBF

SQL> shutdown immediate;

Database closed.

Database dismounted.

ORACLE instance shut down.

Delete C:\ORACLE\PRODUCT\10.2.0\ORADATA\DBA20\TEST01.DBF

SQL> startup;

ORACLE instance started.

Total System Global Area 167772160 bytes

Fixed Size 1247876 bytes

Variable Size 83887484 bytes

Database Buffers 75497472 bytes

Redo Buffers 7139328 bytes

Database mounted.

ORA-01157: cannot identify/lock data file 5 - see DBWR trace file

ORA-01110: data file 5: 'C:\ORACLE\PRODUCT\10.2.0\ORADATA\DBA20\TEST01.DBF'

SQL> alter database create datafile

'C:\ORACLE\PRODUCT\10.2.0\ORADATA\DBA20\TEST01.DBF';

Database altered.

SQL> recover datafile 'C:\ORACLE\PRODUCT\10.2.0\ORADATA\DBA20\TEST01.DBF';

Media recovery complete.

SQL> alter database open;

Database altered.

SQL> select * from test;

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