The Command Line Data Pump
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( Pro Edition )
The command-line version of the Data Pump tool can be used to execute (run) a previously saved Data Pump project. These projects can be created in the GUI version of the Data Pump. You cannot use the command-line Data Pump without a pump-project.
The command-line version can be used from the Windows Scheduler services, a batch file or the command prompt. This can be very useful for large or periodic transfers that need or can be ran at night.
For more information, see:
Saved pump-projects contain database passwords - although they are somewhat encrypted, it's not a strong encryption!