Hi,
when Bitamp-indexes then :

* They are one of the fastest access-path for big tables

* sometimes u have to use the INDEX_COBINE-Hint

* you will have slower Insert-Rate, more CPU is needed

* The BM-index do not like heavy updates/ inserts

* you will ahve tor reorg them

* init.ora bm-params to set

I would decide not to mix a prtitioned table wit bm-indexes (common statement )
I would even divide the table in more partitions. 60 instead of 6 if its possible.

But when you want to query the table flexible than i understand that you would like to have more single-col-bm-indexes. so mixing te two techniques probalby could work.

So there is no clear no or yes even mor a fuzzy no/Yes

Orca