If you are wanting to load 100+ Oracle tables into SAS VA then I'd suggest doing that outside of VA as most likely you will need to transform the data prior to loading into VA.
We are doing something similar with SQL Server tables and one of the first issues we found is the default character column lengths in SAS are way too large and take up way more space than necessary. These need to be trimmed to reduce tables to a reasonable size before loading into VA memory.
If you are wanting to do this regularly as a production job then doing the ETL from Oracle in a SAS program is a good solution.