The figure shows Oracle Internet Directory with two metadata repositories and two middle tiers installed by different users. UserA belongs to the IAS Admins and Mid-tier Admins group for asdb.oracle.com. UserB belongs to the IAS Admins, Mid-tier Admins group and the Repository Owners group for asdb1.oracle.com. At the top of the diagram there is a box representing Oracle Context. There are two sub-boxes, one representing Products, and one representing Groups. Under Groups, there is a box representing IAS Admins, members of which include orcladmin, userA, and userB. There is an IAS box under the Products box. The IAS box is sub-divided into boxes representing IAS Instances and the Infrastructure database. Under the Infrastructure database there are two domains, each of which contains a metadata repository and middle tier. UserA belongs to one of of the installations and userB belongs to the other. There are two IAS instances, J2EE, and PW1. These are described in the surrounding text as numbers 2 and 4 respectively.