Oracle Data Pump Errors: ORA-31626 and ORA-06512 and ORA-31637 and ORA-31632 and ORA-01422

Problem

While implementing a Data Pump Export script, I started getting the following error stack:

Connected to: Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production

ORA-31626: job does not exist

ORA-06512: at "SYS.DBMS_SYS_ERROR", line 79

ORA-06512: at "SYS.KUPV$FT", line 1183

ORA-31637: cannot create job CSEXPDP_01 for user SYS

ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95

ORA-06512: at "SYS.KUPV$FT", line 1176

ORA-31632: master table "SYS.CSEXPDP_01" not found, invalid, or inaccessible

ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95

ORA-06512: at "SYS.KUPV$FT", line 1167

ORA-01422: exact fetch returns more than requested number of rows

ORA-06512: at "SYS.KUPV$FT_INT", line 2566

ORA-06512: at "SYS.KUPV$FT_INT", line 2556

ORA-06512: at "SYS.KUPV$FT", line 1092

Cause & Solution

In my case the error was caused, because my script used the same name for the Database Directory and the Data Pump Job.

For example:

It created a DB-Directory like this . . .

CREATE OR REPLACE DIRECTORY tmp_auto_dp_01 AS '...';

. . . and specified a DataPump job name like this:

JOB_NAME=tmp_auto_dp_01

DIRECTORY=tmp_auto_dp_01

SCHEMAS=...

DUMPFILE=...

LOGFILE=...

I hope it helps someone