the file size of backup/restore

Hello

I / m a beginner in oracle, so please be patient.

I had a complete test-database. I tested my application. Now, I want to deploy an empty database to another location. So, I made a backup and restore. (first set archivelog true, by using the sql command line).

To my surprise, the restored data file has the same size as the database complete. I expected to be very low. In the database use to work with (firebird) backup and restore is a way to clean your data and get rid of the empty space...

Oracle seems to handle this in different ways. What Miss me?

Thank you

Mieke

I did a backup and restore.

I guess you used the backup and restore Oracle, which takes place in RMAN menu. If so, RMAN makes a 'physical' backup, if the copy cannot be different from the original.

In the database use to work with (firebird) backup and restore is a way to clean your data and get rid of the empty space...

To reorganize your data, you must use the expdp/impdp command.

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