RE: Migrating 3TB size database from HP to AIX, also 9i to 10g.

Sounds like a good idea to me too, but if you do go with this plan, be especially wary of using datapump to move the metadata for your TTS - that is one of the specific areas where I saw much worse performance with DP compared to exp/imp (HOURS vs. minutes!) - be sure to test though - YMMV.  

Regards,
Brandon

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of BN    

Upgrade the existing HP to 10g  

Use Transportable Tablespace option to move it to AIX (TTS and FTP)

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