使用RMAN备份时什么时候才会自动备份控制文件

Target DB / RMAN Client: 11.2.0.1.0 1. 当CONFIGURE CONTROLFILE AUTOBACKUP OFF;时，仅备份数据文件1（system01.dbf）时会自动

Target DB / RMAN Client: 11.2.0.1.0

1. 当CONFIGURE CONTROLFILE AUTOBACKUP OFF;时，，仅备份数据文件1（system01.dbf）时会自动备份控制文件；

2. 当CONFIGURE CONTROLFILE AUTOBACKUP ON;时，备份任意文件（数据文件/归档日志）都会自动备份控制文件。

RMAN> show all;

RMAN configuration parameters for database with db_unique_name T11A are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP OFF; # default
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default
CONFIGURE SNAPSHOT CONTROLFILE NAME TO 'D:\ORA11G\ORASOFT\DATABASE\SNCFT11A.ORA'; # default

RMAN> backup datafile 1;

Starting backup at 05-JUN-12
using channel ORA_DISK_1
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
input datafile file number=00001 name=D:\ORA11G\ORADATA\T11A\SYSTEM01.DBF
channel ORA_DISK_1: starting piece 1 at 05-JUN-12
channel ORA_DISK_1: finished piece 1 at 05-JUN-12
piece handle=D:\ORA11G\FLASH_RECOVERY_AREA\T11A\BACKUPSET\2012_06_05\O1_MF_NNNDF_TAG20120605T151702_7WVDMHGW_.BKP tag=TAG20120605T151702 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:15
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
including current control file in backup set
including current SPFILE in backup set
channel ORA_DISK_1: starting piece 1 at 05-JUN-12
channel ORA_DISK_1: finished piece 1 at 05-JUN-12
piece handle=D:\ORA11G\FLASH_RECOVERY_AREA\T11A\BACKUPSET\2012_06_05\O1_MF_NCSNF_TAG20120605T151702_7WVDN1PN_.BKP tag=TAG20120605T151702 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 05-JUN-12

RMAN> list backup;

List of Backup Sets
===================

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
2       Full    186.25M    DISK        00:00:12     05-JUN-12
        BP Key: 2   Status: AVAILABLE  Compressed: NO  Tag: TAG20120605T151702
        Piece Name: D:\ORA11G\FLASH_RECOVERY_AREA\T11A\BACKUPSET\2012_06_05\O1_MF_NNNDF_TAG20120605T151702_7WVDMHGW_.BKP
  List of Datafiles in backup set 2
  File LV Type Ckp SCN    Ckp Time  Name
  ---- -- ---- ---------- --------- ----
  1       Full 664502     05-JUN-12 D:\ORA11G\ORADATA\T11A\SYSTEM01.DBF

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
3       Full    9.36M      DISK        00:00:04     05-JUN-12
        BP Key: 3   Status: AVAILABLE  Compressed: NO  Tag: TAG20120605T151702
        Piece Name: D:\ORA11G\FLASH_RECOVERY_AREA\T11A\BACKUPSET\2012_06_05\O1_MF_NCSNF_TAG20120605T151702_7WVDN1PN_.BKP
  SPFILE Included: Modification time: 05-JUN-12
  SPFILE db_unique_name: T11A
  Control File Included: Ckp SCN: 664507       Ckp time: 05-JUN-12

RMAN> delete backup;

using channel ORA_DISK_1

List of Backup Pieces
BP Key  BS Key  Pc# Cp# Status      Device Type Piece Name
------- ------- --- --- ----------- ----------- ----------
2       2       1   1   AVAILABLE   DISK        D:\ORA11G\FLASH_RECOVERY_AREA\T11A\BACKUPSET\2012_06_05\O1_MF_NNNDF_TAG20120605T151702_7WVDMHGW_.BKP
3       3       1   1   AVAILABLE   DISK        D:\ORA11G\FLASH_RECOVERY_AREA\T11A\BACKUPSET\2012_06_05\O1_MF_NCSNF_TAG20120605T151702_7WVDN1PN_.BKP

Do you really want to delete the above objects (enter YES or NO)? y
deleted backup piece
backup piece handle=D:\ORA11G\FLASH_RECOVERY_AREA\T11A\BACKUPSET\2012_06_05\O1_MF_NNNDF_TAG20120605T151702_7WVDMHGW_.BKP RECID=2 STAMP=785171823
deleted backup piece
backup piece handle=D:\ORA11G\FLASH_RECOVERY_AREA\T11A\BACKUPSET\2012_06_05\O1_MF_NCSNF_TAG20120605T151702_7WVDN1PN_.BKP RECID=3 STAMP=785171841
Deleted 2 objects

RMAN> backup datafile 2;

Starting backup at 05-JUN-12
using channel ORA_DISK_1
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
input datafile file number=00002 name=D:\ORA11G\ORADATA\T11A\SYSAUX01.DBF
channel ORA_DISK_1: starting piece 1 at 05-JUN-12
channel ORA_DISK_1: finished piece 1 at 05-JUN-12
piece handle=D:\ORA11G\FLASH_RECOVERY_AREA\T11A\BACKUPSET\2012_06_05\O1_MF_NNNDF_TAG20120605T151753_7WVDO1TY_.BKP tag=TAG20120605T151753 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:15
Finished backup at 05-JUN-12

RMAN> list backup;

List of Backup Sets
===================

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
4       Full    132.41M    DISK        00:00:08     05-JUN-12
        BP Key: 4   Status: AVAILABLE  Compressed: NO  Tag: TAG20120605T151753
        Piece Name: D:\ORA11G\FLASH_RECOVERY_AREA\T11A\BACKUPSET\2012_06_05\O1_MF_NNNDF_TAG20120605T151753_7WVDO1TY_.BKP
  List of Datafiles in backup set 4
  File LV Type Ckp SCN    Ckp Time  Name
  ---- -- ---- ---------- --------- ----
  2       Full 664556     05-JUN-12 D:\ORA11G\ORADATA\T11A\SYSAUX01.DBF

RMAN> delete backup;

using channel ORA_DISK_1

List of Backup Pieces
BP Key  BS Key  Pc# Cp# Status      Device Type Piece Name
------- ------- --- --- ----------- ----------- ----------
4       4       1   1   AVAILABLE   DISK        D:\ORA11G\FLASH_RECOVERY_AREA\T11A\BACKUPSET\2012_06_05\O1_MF_NNNDF_TAG20120605T151753_7WVDO1TY_.BKP

Do you really want to delete the above objects (enter YES or NO)? y
deleted backup piece
backup piece handle=D:\ORA11G\FLASH_RECOVERY_AREA\T11A\BACKUPSET\2012_06_05\O1_MF_NNNDF_TAG20120605T151753_7WVDO1TY_.BKP RECID=4 STAMP=785171873
Deleted 1 objects