How to automate the schema export task

Hi,
I take online backup by exporting the schema 3 times in a day.
I want to automate this process.
with the help of expdp and linux job schedule to repeate the job daily, how it is possible....
Regards
Prabhaker

schedule using DBMS_JOBHmmmm... no :-)
Exporting is done through the exp binary, so you can't submit it via an Oracle Job - except if you use Java to launch an O.S. program, but that's another journey.
Use cron or at instead (or task scheduler if you're on Win*)
Yoann.

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