Pre-export    and post-import tasks

oracle8i/windows 2000 server.
i would like export my database from my organisation and import into my local
machine at home.
what are the precautions,tasks and post tasks
,i have to take during import and export.
c.santhanakrishnan.

Why are you exporting your organisations db to import at home? Are you aware of the privacy issues this raises? Do you have approval from your organisation?
Exporting -
o NLS_LANG is set correctly
o Available space on disk
o consistent = y
o recordlength=65535
o direct=y
o log=<logfile_name>
o do you require grants, indexes?
o A feedback for progress,
o But even with consistent = y that is table consistent and there is a probability you may run into a problem with FKs (usually when exporting large amounts of data) and tables in the beginning of the export have child tables near the end of the export which (the child tables) have records inserted during the export which won't have a parent record on import and will be rejected.
Importing -
Some depend on the data volume. Do you want to -
o NLS_LANG is set correctly
o drop, re-create indexes to speed up import
o put the database in NOARCHIVELOG (if possible)
o need to also create public synonyms
o check triggers and if they will fire?
o need to create the schema/user to import (if it doesn't exist in the import database and is not a full export) ?
o do the tablespaces that the export was taken from exist in the import database?
o disable/enable FK constraints
o enough UNDO space
o enough archive log space (if in ARCHIVELOG mode)
oset a buffer (size depends)
o set a feedback to monitor progress (or check rows_processed in v$sql)
o if data already exists in the tables, does it need to be truncated (which raised other issues, constraints etc, take a backup prior to truncate?)
I probably missed stuff too.

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