Performance increase in10gR2?

Hi Oracle folks,
I'm hoping to get some clarification as to what has changed in Spatial between 10.1.0.4 and 10.2. Looking at the documentation and discussion forums it's unclear what this really means.
I believe the "R2" means "Release 2" (?)
For example:
The Spatial documentation for 10.2 says "This parameter is part of a change for this __release__ in how Spatial updates the spatial index when rows are inserted, updated, or deleted in the spatial table...."
But this parameter is in 10.1 (?)
2nd example:
Dan Abugov said in the discussion forums: "The increase in time vs. traditional data is almost exlusively related to index processing. This performance did increase substantially in 10gR2."
So again, is there really a difference between 10.2 and 10.1 ?
Thanks.
-Rodney

Hi Rodney,
The SDO_DML_BATCH_SIZE parameter was exposed through documentation for the first time in Oracle 10g Release 2. It did (does) exist in Oracle 10g Release 1, but the assumption is that most users (except perhaps those that follow this forum) will not know that it can be changed for some workloads yielding a very positive effect until the parameter hit the documentation. The increase in performace is only seen when a lot of transactions can be batched to the database without sending frequent commits. The default setting in the database is 1000 (batches of up to 1000 are sent for commit processing), but I've seen performance enhancements with much higher numbers as well (with the data i looked at, there wasn't much improvement after setting it to 5K).
Hope this helps.

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