We use ENCRYPTION as Encryption parameter in Oracle Data Pump.
We can use the ENCRYPTION parameter with the values ALL, DATA_ONLY, METADATA_ONLY and ENCRYPTED_COLUMNS_ONLY.
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-bash-3.2$ expdp "'/ as sysdba'" directory=dump_dir schemas=scott dumpfile=scott%U.dmp logfile=scott.log reuse_dumpfiles=y parallel=2 compression=all encryption=all |