Hi,
In this case it would not make sense to use both but in practice it's quite unusual using Fiscal Year/Period or Calendar Month as partitioning Characteristic. This will lead to a huge number of PartProviders.
If you want to query on top of the SPO PartProviders, usually via a MultiProvider, as a rule of thumb you should not exceed 10 PartProviders for data selection. Otherwise the logical partitioning will work counterproductive from a performance perspective.
As a guideline for logical partitioning, do not use too granular partitioning Characteristics. For performance reasons it is much more efficient to have a limited number of PartProviders with a reasonable data volume. As a rule of thumb maximum 300 million records for an Oracle or DB2 database and 100 million for SQL Server. If you want to reduce the data volume per InfoProvider, then logical partitioning using Fiscal Year or Calendar Year can be considered as a best practice. It is a very good choice to combine it with DB partitioning using Fiscal Year or Calendar Month.
Best regards,
Sander