Exporting a schema on Linux Oracle XE using expdp

Question

Hi,
Basically, I would like to take everything (including the APEX app) that's in the HR schema and copy into another schema. I want to experiment with APEX and don't want to mess around with the original. I'm running Oracle XE on Fedora 5 BTW.
Here's what I did:
CREATE OR REPLACE DIRECTORY backup_dir AS '/usr/lib/oracle/xe/app/oracle/admin/XE/';
GRANT READ ON DIRECTORY backup_dir TO hr;
But I can never get the expdp application to execute... (I'm new to linux btw)
The path to the expdp binary is:
/usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin
I then try to execute this comment in a terminal command line:
./expdp hr/hr SCHEMAS=hr DIRECTORY=backup_dir DUMPFILE=sch ema.dmp LOGFILE=schema.log;
I get this message:
UDE-00013: Message 13 not found; No message file for product=RDBMS, facility=UDE
UDE-00019: You may need to set ORACLE_HOME to your Oracle software directory
Eric

Answer 1

Problem solved (almost) thanks!
This export does not export the APEX application, I have to go into the APEX admin and export the application and then import it but everything else exported and imported fine.
Here is the detailed solution:
Create Backup Directory for Oracle:
CREATE OR REPLACE DIRECTORY backup_dir AS '/usr/lib/oracle/xe/app/oracle/admin/XE/';
Grant permissions to users:
GRANT READ ON DIRECTORY backup_dir TO hr;
Location of binaries on Linux:
/usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin
To Export, cd to the binaries and execute in a linux terminal:
./expdp hr/hr@XE SCHEMAS=HR DIRECTORY=backup_dir DUMPFILE=schema.dmp LOGFILE=schema.log;
Your export file will now be located at backup_dir '/usr/lib/oracle/xe/app/oracle/admin/XE/'
To import, place the file in your backup_dir '/usr/lib/oracle/xe/app/oracle/admin/XE/' (If it's on the same computer you don't need to do anything since the file is already there) and then:
impdp NewSchema/NewSchema@XE REMAP_SCHEMA=hr:NewSchema directory=backup_dir dumpfile=schema.dmp logfile=schema.log
Thanks for your help!
Eric