TableSpaces across partitions and xlog

Moving table spaces along raids definately helps but will moving tablespaces across partitions help??? in my opinion it should lead to degradation of performance because read/write head will have to move more.....

also, i have two raids.... my data is in first one... and xlog in the other..... will moving some of the data to the raid with xlog help....

my application is read and write intensive... but the bottle so far has been the update queries....

Regards
Himanshu

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