Supplemental Table Limits and delete records

Hi all,

two questions about the supplmental table:

1- is there a limit in terms of the number of records that a supplemental table can contain in order to avoid a lag in the Responsys enviroment?

2- is there a way to delete in bulk some records in the supplmental table? For instance, i want to delete all the records that have the CREATED DATE < SYSDATE.

Thanks,

Luca