Estimating size of RMAN backsets before taking backup

I have a database version 10.2.0.4 of size 4571.1201 GB
==========================================
SQL> select sum(bytes/1024/1024/1024) from dba_data_files;
SUM(BYTES/1024/1024/1024)
4571.1201
==========================================
I need to estimate the total size of the RMAN backup level 0 for this database.

I think the level 0 backup will take the total 4571.1201 GB of space. because it is a full db backupNormally wrong, unless the datafile is full (RMAN does not backup unused blocks). Only image copies (but not backuppieces) have the same size as the original datafiles.
There must be a previous backup , then the following query will give an indication:
SQL> select file#, blocks, datafile_blocks, round((blocks / datafile_blocks * 100), 2) Perc_used
from v$backup_datafile;
Werner

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i've been assigned to do a specific report related to exchange and its backup
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archive log filename=+FRA01/osondemand/archivelog/2012_02_27/thread_2_seq_15028.7182.776323223 recid=122876 stamp=77
RMAN-00571: ===========================================================
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Re: rman error when i am doing backup archivelog delete input
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Recovery Manager: Release 10.2.0.1.0 - Production on Wed Jul 6 15:49:51 2011
Copyright (c) 1982, 2005, Oracle. All rights reserved.
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channel ORA_DISK_1: specifying datafile(s) in backupset
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input datafile fno=00005 name=/usr/lib/oracle/xe/oradata/XE/ftress_data_log01.dbf
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input datafile fno=00001 name=/usr/lib/oracle/xe/oradata/XE/system.dbf
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input datafile fno=00010 name=/usr/lib/oracle/xe/oradata/XE/ftress_indx_lrg01.dbf
input datafile fno=00002 name=/usr/lib/oracle/xe/oradata/XE/undo.dbf
input datafile fno=00004 name=/usr/lib/oracle/xe/oradata/XE/users.dbf
input datafile fno=00008 name=/usr/lib/oracle/xe/oradata/XE/ftress_data_sml01.dbf
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channel ORA_DISK_1: finished piece 1 at 06-JUL-11
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Backup Piece       3      06-JUL-11          /usr/lib/oracle/xe/app/oracle/flash_recovery_area/XE/backupset/2011_07_06/o1_mf_nnndf_TAG20110706T133443_7184wr4d_.bkp
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Mailbox database size before & after backup

Hi there
i recently made a similar thread and someone told me that i should do it here so here is my issue :
i've been assigned to do a specific report related to exchange and its backup
so what we want is a report that would give us the global size of all our mailbox databases before and after the backup ( even the size of the logs before and after)
(example : we have a mailbox database X: , we need to go inside the data folder, and retrieve the size of the .edb
then do the same thing with the logs, go inside the logs folder, and retrieve the logs size )
i was wondering if anyone ever managed to pull a script that does similar things, given the fact that i ve never worked with powershell and my knowledge is kinda limited in that area
Thanks

Hi Amassuo,
for finished scripts that do things, check out the
gallery. If you want to learn powershell (I might be biased, but I highly recommend it), check out the
learning center.
Regarding your specific issue, you can check the free space on a specific disk by running this powershell command:
Get-WmiObject win32_logicaldisk -Filter "DeviceID = 'C:'" | Select -ExpandProperty FreeSpace
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Hi there
env: Oracle 10gR2, RHEL 64bit
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F
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60430230208_IND.DBF
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F
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03
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channel ORA_DISK_1: finished piece 1 at 15-MAY-10
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RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
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03
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RMAN>
Thanks & Regards,
Ranjith John

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Estimating size of RMAN backsets before taking backup

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