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Oracle how-to

backup and recovery with RMAN

Slavo Kozac, 17 Apr 2010, 19:54

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BACKUP
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-- backup full database - compressed

-- start rman and login to the target database
rman target /

-- do not back up unchanged data files
CONFIGURE BACKUP OPTIMIZATION ON;

-- Configure the number of server processes (channels) that write backups to DISK
CONFIGURE DEVICE TYPE DISK PARALLELISM 2;

-- configure backup destination
configure channel device type disk format '/data/backup/dbname/%U';

-- automatically backup controlfile whenever you do backup of the database
configure controlfile autobackup format for device type disk to '/data/backup/dbname/%F';

-- keep backups 14 days
configure retention policy to recovery window of 14 days;

-- delete records in repository for backup files which do not exist anymore
crosscheck backup device type disk;
delete noprompt expired backup;

-- delete backups older than retention period
report obsolete;
delete noprompt obsolete;

-- backup database and archived redo logs
backup as compressed backupset database plus archivelog delete input;

exit

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-- backup control file only

rman target / nocatalog

run
{
  allocate channel ch0 type disk format '/oradata/BACKUP/%d_%s_%t_%U';
  backup current controlfile;
}

exit

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RECOVERY
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-- recover tablespace users

-- start rman and login to the target database
rman target /

sql "alter tablespace users offline immediate";

restore tablespace users;

recover tablespace users;

sql "alter tablespace users online";

exit

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-- incomplete recovery from old backup - until time

sqlplus / as sysdba

shutdown immediate

startup nomount

exit

rman target /

alter database mount;

restore database;

recover database until time "to_date('09-04-2008 22:20','dd-mm-yyyy hh24:mi')";

alter database open resetlogs;

exit

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-- incomplete recovery using control file from backup

-- restore files

rman target / nocatalog

startup nomount;

set dbid 3708878893;

restore controlfile from '/oradata/BACKUP/DBNAME_1599_637421512_hvivshu8_1_1';

sql "alter database mount";

restore database;

restore archivelog sequence between 3914 and 3919;

exit

-- do incomplete recovery

sqlplus /nolog

connect / as sysdba

startup mount;

recover database using backup controlfile until cancel;

ORA-00279: change 469586816 generated at 10/31/2007 11:33:12 needed for thread 1
ORA-00289: suggestion : /oradata/DBNAME/arch/1_3919.dbf
ORA-00280: change 469586816 for thread 1 is in sequence #3919

Specify log: {=suggested | filename | AUTO | CANCEL}

ORA-00279: change 469593510 generated at 10/31/2007 11:55:07 needed for thread 1
ORA-00289: suggestion : /oradata/DBNAME/arch/1_3920.dbf
ORA-00280: change 469593510 for thread 1 is in sequence #3920
ORA-00278: log file '/oradata/DBNAME/arch/1_3919.dbf' no longer needed for this recovery

Specify log: {=suggested | filename | AUTO | CANCEL}
cancel
Media recovery cancelled.

alter database open resetlogs;

alter tablespace temp add tempfile '/oradata/DBNAME/temp01.dbf'
size 897581056  reuse autoextend on next 655360 maxsize 32767m;

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-- incomplete recovery using control file from backup

rman target / nocatalog

startup nomount;

set dbid 1384950137;

restore controlfile from 'E:ORACLEFLASH_RECOVERY_AREAPDNLBACKUPSET2010_04_12O1_MF_NCNNF_BACKUP_PDNL_000202_0_5W52RZTX_.BKP';

sql "alter database mount";

restore database validate;

list backup;

restore archivelog sequence between 38205 and 38366 validate;

restore database;

recover database until sequence 38367;

catalog start with 'E:ORACLEFLASH_RECOVERY_AREAPDNLBACKUPSET2010_04_15O1';

crosscheck backup device type disk completed between '14-APR-10' AND '16-APR-10';

restore archivelog sequence between 38367 and 38423 validate;

recover database until sequence 38470;

alter database open resetlogs;

exit