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SQL> conn / as sysdba
Connected.
SQL> create directory lxw_dir as '/home/oracle';

Directory created.

SQL> grant write,read on directory lxw_dir to lxw;

Grant succeeded.

SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

[oracle@db ~]$ expdp lxw/lxw123@orcl directory=lxw_dir dumpfile=lxw_20200706.dmp log=lxw_20200706.log schemas=lxw

SQL> conn / as sysdba
Connected.
SQL> create directory lxw_dir as '/home/oracle';

Directory created.

SQL> grant write,read on directory lxw_dir to lxw

Grant succeeded.

SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

[oracle@db ~]$ impdp lxw/lxw123@orcl directory=lxw_dir dumpfile=lxw_20200706.dmp log=lxw_20200706.log schemas=lxw