$ORACLE_HOME/rdbms/admin/catexp

catexp.sql prepares the database for the export/import utility:

• import views in the data dictionary
• EXP_FULL_DATABASE and IMP_FULL_DATABASE roles
• necessary privileges to the EXP_FULL_DATABASE and IMP_FULL_DATABASE roles
• FULL_DATABASE and IMP_FULL_DATABASE to the DBA role
• Records the version of catexp.sql that has been installed