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index partition or index sub-partition size without rebuilding

edited Dec 27, 2012 1:36PM in Database Administration (MOSC) 3 commentsAnswered
DB: oracle 10.2.0.4 - RAC on 5 nodes.
I have a very large sub partition table with many indexes.

 I realized that I am using large extent size - 64 MB, and Oracle is using only 1 extent. this means that this index may require less then 64mg. without rebuilding this index subpartition, how would I figure out the acutal bytes occupied by this index?

thanks.

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