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DataPump Import (IMPDP) Fails with Error ORA-1427 During Importing Statistics (Doc ID 1501580.1)

Last updated on JANUARY 30, 2022

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.


During DataPump import, you encounter errors like:

ORA-39097: Data Pump job encountered unexpected error -1427
ORA-39065: unexpected master process exception in DISPATCH
ORA-01427: single-row subquery returns more than one row
Job "SYS"."SYS_IMPORT_FULL_02" stopped due to fatal error at 16:07:30

The import logfile shows:

ORA-39126: Worker unexpected fatal error in KUPW$WORKER.PUT_DDLS [TABLE_STATISTICS]
ORA-06502: PL/SQL: numeric or value error
LPX-00241: entity reference is not well formed
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95
ORA-06512: at "SYS.KUPW$WORKER", line 9001



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