Create a tablespace that would hold the repository data. A size
between 200- 250 MB would be ideal. Let us call it Dummy_Space.
. Create an Oracle user who would own this repository. Assign DBA,
SNMPAgent, Exp_Full_database, Imp_Full_database roles to this user.
Lets call this user Dummy_user. Assign Dummy_Space as the default
tablespace.
. Create an operating system user with the same name as the Oracle
username. I.e. Dummy_User. Add 'Log on as a batch job' under
advanced rights in User manager.
. Fire up Enterprise manager and log in as Dummy_User and enter the
password. This would trigger the creation of the repository. From now
on, Enterprise manager is ready to accept jobs.