DB2 UDB - Oracle 10g Size Difference

Hi -
We are looking to migrate a production database from DB2 UDB to Oracle 10g. Can anyone provide any insight as to what kind of size changes we can expect?
Thanks!

I don't know even the a b c of DB2 but still I can say that it must be saving some sort of metadata as oracle. In oracle 10g the extra tablespaces which you must have to create are SYSTEM and SYSAUX which actually store the metadata and AWR information. How big your current database is on DB2, check it with and without metadata.
Daljit Singh

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