create directory dump_dir as '/home/oracle';
create directory log_dir as '/home/oracle';
expdp test/test schemas=test dumpfile=dump_dir:test%U.dmp logfile=log_dir:test.log
expdp test/test schemas=test dumpfile=dump_dir:testa%U.dmp,dump_dir:testb%U.dmp filesize parallel=2 logfile=log_dir:test.log
expdp parfile=test.par schemas=test dumpfile=dump_dir:mytest.dmp logfile=log_dir:mytest.log
$ cat test.par
USERID=test/test
$
impdp system/xxx schemas=test dumpfile=dump_dir:mytest.dmp logfile=log_dir:mytest.log
impdp test/test schemas=test dumpfile=dump_dir:testa%U.dmp,dump_dir:testb%U.dmp parallel=2 logfile=log_dir:test.log
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