The database objects required for the extraction will be installed into each application schema you want to extract the sources from.
The installation instructions will refer to the application schema as [application schema]. The password for the application schema will be referred to as [application schema password].
Thus when I use an instruction like sqlplus [application schema]/[application schema password]@[database] please replace that with the actual values of your local installation. For example, if you want to install the database objects into the schema HR with the password hr1 into your local XE instance (having a TNS entry named xe) then this instruction translates to:
sqlplus hr/hr1@xe
In order to extract information about the schema, tablespaces, etc. you will have to grant the role SELECT_CATALOG_ROLE to the schema as well. Run the following statement as a DBA (e.g. SYS or SYSTEM): grant select_catalog_role to [application schema];