ROLLUP locked resource to build indexces

Hi,
I am running a rollup where some aggregates are filling, there was a direct sql statement running to fill the aggregate. while running this rollup one more process to drop index for another cube also started.
The rollup took 2 hours, after finishing the rollup only the drop indexces are executed.
Actuall both are different data targets, why drop indexces are waiting to finish rollup process.
Is there any data base level tuning required to run these parallel !
Could any one advise...
Thanks & Regards
Srini

Hi,
There should have been a common Master Data thats been shared between both the Infocubes...Like Material, Cutomer should have been there common for both the Info Cubes.
When the Roll-up is in Progress the Aggregates will be updated/Adjusted with the new transactions(Which have MD &TD) and this will lead to locking up of Master data. This should have lead to locking and only one procces has been executed.
Thanks/Tarak.

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ROLLUP locked resource to build indexces

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