Couple oracle_create_user and apex_create_user

[tschf]

Setting OOS_ORACLE_CREATE_USER_YN to N, will not create the database schema. However, another configuration, OOS_APEX_CREATE_USER_YN, determines if the workspace is created or not (which is tied to the schema from the former).

I used N and Y respectively, which leads to this in the workspace (SQL Workshop):

edit. Yes and No might make sense, but not the other way around. I would argue they should use the same setting though, to simplify things.