Here is the howto I did
First purge content in the target database with oracle_db_struct_drop.sql.
Then create the tables with oracle_db_struct.sql
Then from a shell:
set NLS_LANG=AMERICAN_AMERICA.UTF8
exp sourceschema/password@sourceDB owner=owner file=forum.dmp log=forum_exp.log
imp targetschema/password@targetDB fromuser=forum touser=targetschema file=forum.dmp log=forum_IMP.log ignore=y CONSTRAINTS=Y
After this you have to update (restar) the deployment!
[originally posted on jforum.net by shadow_empire]