User Defined Activity Process Flow Help

Question

Hello,
I'm trying to create a process flow that will rename a file. I'm using the User Defined Activity, but I've ran into a couple problems. First some background info, Oracle 10G is the DB, and it's ran on a Unix system, the Oracle user account does have read/write access to the directories used.
For the Activity Parameters I've set
Command > I've tried everything here
Parameter > Blank
Script >
filefullname=ip_xref.dat
filename=${filefullname%.*}
fileext=${filefullname##*.}
DATE=`date +%Y%m%d`
newfilename="${filename}_${DATE}.${fileext}"
mv $filefullname $newfilename
mv $newfilename backup/
in the command section, I've tried every possible thing I can think of from : /usr/bin/ksh, /bin/ksh, ksh, /bin/bash, made a script outside owb with the same thing, and pointed it at that and still all I get is "/bin/bash: not found" or "/usr/bin/ksh: not found"
Ideas/suggestions, I'm open to anything.
As a side note I tried to do it with UTL_FILE, but I was informed by our DBA that it was disabled for security, so that's out.

Answer 1

What type of execution is configured for user defined activity (this type is defined in file Runtime.properties on server side, available types for UDA - SCHEDULER or NATIVE_JAVA)?
For SCHEDULER type ask your DBA about Uinux user used for executing external jobs (usually nobody user used with very limited rights - maybe this user doesn't have rights for executing any program/scripts).
Regards,
Oleg