Oracle-L: RE: 2 basic Qs. on export

From: Deshpande, Kirti <kirti.deshpande_at_verizon.com>
Date: Mon, 13 Jan 2003 18:53:48 -0800
Message-ID: <F001.0052E9EE.20030113185348@fatcity.com>

Here is my suggestion:

1.
Use file= and filesize= option (8i Rel 2?) to create multiple disk files, copy them to tape. Reload when importing.

2a.
Export should not be considered a database backup. (IMHO). In future releases, full=y may not be available. 2b.
Depends. If export starts at 10:00 with option consistent=y then no updates after 10:00 will be seen by export. You will get a read consistent image of the database (as of 10:00). With consistent=n (default), updates to rows not yet read by exp will be included in the exported data.

There is a good discussion about this in the Oracle8i/9i Utilities Guide.

Kirti

-----Original Message-----
Sent: Monday, January 13, 2003 4:59 PM
To: Multiple recipients of list ORACLE-L

Large Export Dumps , if Directly Exported to TAPE Devices , Can Import be safely Done therefrom ?

FILE=<Device name>

OR is it advisable to compress / Split the Export Dump Files onto Storage Box & thereafter backup the Same onto Tape ?

2) With Oracle 8i & 9i

Does export backup fired at a certain Time take ALL Objects's Data existing as at that point in time ?

Assuming exp Command is issued to export a Full Database Containing many Tables at 10:00 hours . Assuming Update is Done to Some Table which is yet to be Exported at 10:01 , Will the export backup contain the Updated OR NON-Updated Data ?

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Author: Deshpande, Kirti
INET: kirti.deshpande_at_verizon.com

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