Expdp failing with error stack ORA-31626,ORA-31637 ,ORA-06512

Hi All,

Our daily expdp  is failing with the following error stack:

Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORA-31626: job does not exist
ORA-31637: cannot create job SYS_EXPORT_FULL_02 for user SYS
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95
ORA-06512: at "SYS.KUPV$FT_INT", line 600
ORA-39080: failed to create queues "KUPC$C_1_20120316101825" and "KUPC$S_1_20120316101825" for Data Pump job
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95
ORA-06512: at "SYS.KUPC$QUE_INT", line 1606
ORA-01403: no data found

There are no invalid objects and components in the database. Also the alert.log shows no errors.