RMAN Backup Without Compression

I wanted to test the effect of RMAN backup compression on an Oracle 11.2.0.1 database running on Windows. I configured the flash recovery area, closed the database and mounted it. Then I did a backup without compression:

C:\Users\AJ0294094>rman nocatalog target=andrew/reid

Recovery Manager: Release 11.2.0.1.0 - Production on Fri Mar 11 18:42:42 2016

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

connected to target database: DEBELDV2 (DBID=4080010922)

using target database control file instead of recovery catalog

RMAN> shutdown

database closed

database dismounted

Oracle instance shut down

RMAN> startup mount

connected to target database (not started)

Oracle instance started

database mounted

Total System Global Area    1043886080 bytes

Fixed Size                     2182344 bytes

Variable Size                612369208 bytes

Database Buffers             423624704 bytes

Redo Buffers                   5709824 bytes

RMAN> backup database;

Starting backup at 11-MAR-16

allocated channel: ORA_DISK_1

channel ORA_DISK_1: SID=156 device type=DISK

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=E:\ORACLE\ORADATA\DEBELDV2\SYSTEM01.DBF

input datafile file number=00003 name=E:\ORACLE\ORADATA\DEBELDV2\UNDOTBS01.DBF

input datafile file number=00002 name=E:\ORACLE\ORADATA\DEBELDV2\SYSAUX01.DBF

input datafile file number=00004 name=E:\ORACLE\ORADATA\DEBELDV2\USERS01.DBF

channel ORA_DISK_1: starting piece 1 at 11-MAR-16

channel ORA_DISK_1: finished piece 1 at 11-MAR-16

piece handle=E:\ORACLE\FLASH_RECOVERY_AREA\DEBELDV2\DEBELDV2\BACKUPSET\2016_03_1

1\O1_MF_NNNDF_TAG20160311T184324_CG60XXJ6_.BKP tag=TAG20160311T184324 comment=NO

NE

channel ORA_DISK_1: backup set complete, elapsed time: 00:01:35

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 11-MAR-16

channel ORA_DISK_1: finished piece 1 at 11-MAR-16

piece handle=E:\ORACLE\FLASH_RECOVERY_AREA\DEBELDV2\DEBELDV2\BACKUPSET\2016_03_1

1\O1_MF_NCSNF_TAG20160311T184324_CG610XWY_.BKP tag=TAG20160311T184324 comment=NO

NE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:02

Finished backup at 11-MAR-16

RMAN>

I checked the size of the backup. It was just under 1 gigabyte (N.B. this was an empty database just created by dbca):

E:\oracle\flash_recovery_area\DEBELDV2\DEBELDV2\BACKUPSET\2016_03_11>dir

Volume in drive E is Seagate Backup Plus Drive

Volume Serial Number is 6E45-7AAF

Directory of E:\oracle\flash_recovery_area\DEBELDV2\DEBELDV2\BACKUPSET\2016_03_

11

03/11/2016  06:45 PM    <DIR>          .

03/11/2016  06:45 PM    <DIR>          ..

03/11/2016  06:45 PM         9,830,400 O1_MF_NCSNF_TAG20160311T184324_CG610XWY_.

BKP

03/11/2016  06:44 PM       981,147,648 O1_MF_NNNDF_TAG20160311T184324_CG60XXJ6_.

BKP

               2 File(s)    990,978,048 bytes

               2 Dir(s)  579,413,495,808 bytes free

E:\oracle\flash_recovery_area\DEBELDV2\DEBELDV2\BACKUPSET\2016_03_11>

I did not need to keep this backup so I deleted it:

C:\Users\AJ0294094>rman nocatalog target=andrew/reid

Recovery Manager: Release 11.2.0.1.0 - Production on Fri Mar 11 19:08:46 2016

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

connected to target database: DEBELDV2 (DBID=4080010922, not open)

using target database control file instead of recovery catalog

RMAN> delete backup;

allocated channel: ORA_DISK_1

channel ORA_DISK_1: SID=156 device type=DISK

List of Backup Pieces

BP Key  BS Key  Pc# Cp# Status      Device Type Piece Name

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

1       1       1   1   AVAILABLE   DISK        E:\ORACLE\FLASH_RECOVERY_AREA\DE

BELDV2\DEBELDV2\BACKUPSET\2016_03_11\O1_MF_NNNDF_TAG20160311T184324_CG60XXJ6_.BK

P

2       2       1   1   AVAILABLE   DISK        E:\ORACLE\FLASH_RECOVERY_AREA\DE

BELDV2\DEBELDV2\BACKUPSET\2016_03_11\O1_MF_NCSNF_TAG20160311T184324_CG610XWY_.BK

P

Do you really want to delete the above objects (enter YES or NO)? YES

deleted backup piece

backup piece handle=E:\ORACLE\FLASH_RECOVERY_AREA\DEBELDV2\DEBELDV2\BACKUPSET\20

16_03_11\O1_MF_NNNDF_TAG20160311T184324_CG60XXJ6_.BKP RECID=1 STAMP=906230605

deleted backup piece

backup piece handle=E:\ORACLE\FLASH_RECOVERY_AREA\DEBELDV2\DEBELDV2\BACKUPSET\20

16_03_11\O1_MF_NCSNF_TAG20160311T184324_CG610XWY_.BKP RECID=2 STAMP=906230701

Deleted 2 objects

RMAN>

I checked at the OS level that the backup files had disappeared (they had).

Continued in the next post.