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DataPump Import (IMPDP) Throws Errors ORA-31693 ORA-936 On An Existing Table (Doc ID 405206.1)

Last updated on APRIL 03, 2020

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 to 10.2.0.4 [Release 10.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
***Checked for relevance on 19-DEC-2012***

Symptoms

You try to import using DataPump Utility impdp and the job throws the following errors on already existing tables in the target database:

ORA-31693: Table data object "<OWNER>"."<TABLE NAME>" failed to load/unload and is being skipped due to error:
ORA-00936: missing expression

The Import Data Pump job will fail if:

1. The table has a LONG column (i.e.: the EXTERNAL TABLE access method cannot be used)

and:

2. The table has a unique index and import Data Pump is done with:

(or APPEND, if the table was truncated manually before the import Data Pump started). This means that DIRECT PATH access method cannot be used either.

Cause

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In this Document
Symptoms
Cause
Solution
References

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