12c Data Pump Export Fails With ORA-39126: Worker Unexpected Fatal Error In KUPW$WORKER.FETCH_XML_OBJECTS [] ORA-1403 and ORA-6512 Errors

(Doc ID 2136399.1)

Last updated on OCTOBER 11, 2017

Applies to:

Oracle Database - Enterprise Edition - Version and later
Information in this document applies to any platform.


On : version, Data Pump Export.

You are attempting to perform an full or schema based export (EXPDP), and shortly after the estimate, the job fails with the following errors:

Estimate in progress using BLOCKS method...
ORA-39126: Worker unexpected fatal error in KUPW$WORKER.FETCH_XML_OBJECTS []
ORA-01403: no data found
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 86
ORA-06512: at "SYS.KUPW$WORKER", line 11254



 Upgrade to and change of PLSQL_OPTIMIZE_LEVEL from the default setting of 2.


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