Full Optimization and rearrangement of dimensions

In BPC, there are times when Full optimize u2018mayu2019 create a new cube if rearrangements of dimensions gives more optimal performance. Also, upon transport, the technical name u2018mayu2019 be different for the same reason.
My questions - how and when does BPC system realize to rearrange dimensions? Is it during every full optimize?
I hope data does not get affected, but what gets affected?
In basic terms, what is "rearrangement of dimensions"?
Also, when should we do full optimize?
When we transport, does that change the technical name?
Thanks.
Anand

Hi Anand -
Part two...
This process being understood, on your specific questions:
How and when does BPC system realize to rearrange dimensions?  The decision to rearrange dimensions is based upon an analysis of transactional data and sizing of the underlying SID tables supporting that data
Is it during every full optimize?  Not necessarily.
I hope data does not get affected, but what gets affected?
Data is retained, but if the cube is reorganized then the technical name of the cube supporting the BPC application may change during the process.
In basic terms, what is "rearrangement of dimensions"?
Rearrangement of dimensions is the process where the BW characteristics are reassigned to different BW dimensions to promote an optimal data model.
Also, when should we do full optimize?
If you suspect that your performance has degraded due to changes in your transactional data storage patterns, you may need to update your current BW data model to achieve the best performance from your application.
When we transport, does that change the technical name?
There is guarantee that the same technical name will exist in the target system, so the answer is maybe not.  Please rview the folowing blog for more details on name retention after transport:
[/people/sheldon.edelstein/blog/2010/03/30/bw-objects-technical-name-changeability-for-sap-bo-planning-consolidation-version-for-netweaver|/people/sheldon.edelstein/blog/2010/03/30/bw-objects-technical-name-changeability-for-sap-bo-planning-consolidation-version-for-netweaver]
Regards,
Sheldon

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