Dimension using two hierarchy

Hi All,

In essbase studio is it possible to create one dimension using two hierarchies? I know in EIS it is doable.

I have two hierarchies (primary and alternate) coming from two different tables from RDBMD. If i create both primary and alternate roll up in same hierarchy i get error.

Hierarchy_1: (for Dim 1)

Primary (Table A)

      parent code

     child code

Alternate (Table

     alt parent code

     alt child code

"Cannot close cube outline. Essbase Error(-1): Concurrent requests attempting to use the same network connections. Session may be inconsistent" 

Any idea on error/work around or Is below possible somehow?