RMAN RECOVERIES DATA RECOVERY METHODS

RMAN RECOVERIES DATA RECOVERY METHODS:

1-  If you lost all data files ;
SQL> startup mount;
RMAN> restore database;
RMAN> recover database;
SQL> alter database open;

2- If you lost a tablespace;
 SQL> alter tablespace users offline;
RMAN> restore tablespace users;
RMAN> recover tablespace users;
SQL> alter tablespace users online;

if you can not offline tablespace;
$ sqlplus “/ as sysdba”
SQL> shutdown abort;
SQL> startup mount;
$ rman target / catalog_user/catalog_user_password@catalogdb
RMAN> restore tablespace users;
RMAN> recover tablespace users;
SQL> alter database open;

3- if you lost a datafile;
SQL> alter database datafile '/oracle/oradata/users.dbf' offline;
RMAN> restore datafile '/oracle/oradata/users.dbf'
RMAN> recover datafile '/oracle/oradata/users.dbf'
SQL> alter database datafile '/oracle/oradata/users.dbf' online;

if you cannot offline datafile;
$ sqlplus “/ as sysdba”
SQL> shutdown abort;
SQL> startup mount;
$ rman target / catalog_user/catalog_user_password@catalogdb
RMAN> restore datafile '/oracle/oradata/users.dbf';
RMAN> recover datafile '/oracle/oradata/users.dbf';
SQL> alter database open;

4-  if you lost your controlfiles;
$ sqlplus “/ as sysdba”
SQL> shutdown abort;
SQL> startup nomount;
$ rman target / catalog_user/catalog_user_password@catalogdb
RMAN> set dbid = 3970640872;
RMAN> restore controlfile;
SQL> alter database mount;
SQL> alter database open;


5- May be a special situation. You need to incomplete recovery
A. Time-Based incomplete recovery;

$ sqlplus "/ as sysdba"
SQL> shutdown abort;
SQL> startup mount;
$ rman target / catalog_user/catalog_user_password@catalogdb
RMAN> restore database until time "to_date('06/05/11 12:0:00','DD/MM/YY HH24:MI:SS')";
RMAN> recover database until time "to_date('06/05/11 12:0:00','DD/MM/YY HH24:MI:SS')";
SQL> alter database open resetlogs;

B. SCN-Based incomplete recovery;

$ sqlplus "/ as sysdba"
SQL> shutdown abort;
SQL> startup mount;
$ rman target / catalog_user/catalog_user_password@catalogdb
RMAN> restore database until scn 1000;
RMAN> recover database until scn 1000;
SQL> alter database open resetlogs;

C. Archive log sequence based incomplete recovery;

$ sqlplus "/ as sysdba"
SQL> shutdown abort;
SQL> startup mount;
$ rman target / catalog_user/catalog_user_password@catalogdb
RMAN> restore database until sequence 9923;
RMAN> recover database until sequence 9923;
SQL> alter database open resetlogs;

6-  if you need some archive logs in your backup

$ rman target / catalog_user/catalog_user_password@catalogdb
RMAN> restore ARCHIVELOG FROM TIME 'SYSDATE-1' UNTIL TIME 'SYSDATE';
OR
RMAN> restore ARCHIVELOG FROM TIME "to_date('07/11/05 00:00:01','MM/DD/YY HH24:MI:SS')
UNTIL TIME 'SYSDATE';


8- if you have a image copy backup and your datafile number 2 has problems then you
can switch datafile number2 to image copy.

RMAN>sql ‘alter database datafile 2 offline’;
RMAN>switch datafile 2 to copy;
RMAN>recover datafile 2;
RMAN>sql ‘alter database datafile 2 online’;

Refer this: this http://taliphakanozturken.wordpress.com/tag/ora-01589/