Problem solving with DBMS_DATAPUMP

grant create table to &&username;

Reference
http://pavandba.com/tag/ora-31626-job-does-not-exist/
https://shanojkumar.wordpress.com/2013/05/29/ora-31626-job-does-not-exist-and-how-to-cleanup-orphaned-datapump-jobs-in-dba_datapump_jobs/
https://chandlerdba.wordpress.com/2012/04/04/problem-solving-with-dbms_datapump/