export file much smaller than expected

Hi all.

Oracle9i Enterprise Edition Release 9.2.0.4.0 - 64 bit Production
PL/SQL Release 9.2.0.4.0 - Production
CORE Production 9.2.0.3.0
AMT for Solaris: release 9.2.0.4.0 - Production
NLSRTL Version 9.2.0.4.0 - Production

SunOS rcworarpt 5.9 Generic_112233-07 sun4u sparc SUNW, Sun-Fire-480R


We are moving from our primary database (95 GB) out of a box of Sun and on a HP - UX server. I use imp/exp to get there. I have copied our production database in development and made a full export:

System Manager/exp file = vdev1_full.dmp full = y log = vdev1_full.log

The newspaper said that export is complete properly without error but the dump file is only about 27 GB.

[rcworarpt] / u04/backup/jamie > ls - lrt vdev1_full.dmp
-rw - r - r - 1 oracle dba 27778671616 Mar 9 15:03 vdev1_full.dmp

I know that he will cancel it, redo logs etc. but this seems pretty small to me.
Through the OEM, looks like it should be about 80 GB for all areas of storage (data as index)

I'm trying by exporting to several files in the image that I can hit a limit of the OS... I'll post the results of that when it ends...

Meanwhile if anyone has additional advice on my export do not hesitate to comment.

Thank you

>
...
Through the OEM, looks like it should be about 80 GB for all areas of storage (data as index)
...
>
For indexes, nothing is exported except metadata (DDL). The only actually exported data rows in the table. The indexes are re-created from the data in the imported table. Also, over time some tables may actually have more space allocated to them that they are actually using - deletions, and all. Similarly for the index. Therefore, it seems quite reasonable, the discharge of size you have.

Tags: Database

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