size of the backup file

Hello

on 10.2.0.3 on Win 2003, I backup database using the control file.

I try the following query to find the backup file size:

Select sum(blocks*block_size) /(1024*1024*1024) from V$ BACKUP_DATAFILE where completion_time > sysdate - 6/24

SUM(BLOCKS*BLOCK_SIZE) /(1024*1024*1024)

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

115.328506

1 selected line.

For me, it is about 115 GB. But I only 18 GB disk. Where I'm wrong?

Thank you.

How many backups you have taken in the last 4 hours?

Tags: Database

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