ERROR:
Export: Release 10.2.0.3.0 – Production on Wednesday, 08 August, 2007 10:12:50
Copyright (c) 2003, 2005, Oracle. All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 – Production
With the Partitioning, OLAP and Data Mining options
ORA-39006: internal error
ORA-39065: unexpected master process exception in DISPATCH
ORA-01403: no data found
ORA-39097: Data Pump job encountered unexpected error 100
Another possible error received after applying a PSU or CPU patch.
ORA-39006: internal error
ORA-39213: Metadata processing is not available

CAUSE/CHANGE:

Applied a CPU or PSU patch.

SOLUTION:

Some DataPump Metadata stored in the METANAMETRANS$ table was missing. You can verify this by selecting from the table which will likely return no rows.

SQL> connect / as sysdba
SQL> select count(*) from metanametrans$;

COUNT(*)
———-
0

While on a database where this table is correctly populated, should return many rows similar to the following run against a 10.2 database:

SQL> select count(*) from metanametrans$;

COUNT(*)
———-
2499
Run the following scripts connected as SYSDBA:
sqlplus / as sysdba
@$ORACLE_HOME/rdbms/admin/catmet2.sql
@$ORACLE_HOME/rdbms/admin/utlrp.sql