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Data Pump Import With EXCLUDE=CONSTRAINT Or INCLUDE=CONSTRAINT Is Excluding And Respectively Not Including NOT NULL Constraints (Doc ID 1930631.1)

Last updated on MAY 16, 2022

Applies to:

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 Exadata Express Cloud Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.


After doing a Data Pump import (impdp) in database release with parameter EXCLUDE=CONSTRAINT the NOT NULL constraints from source tables are not in target tables. Sequence of steps leading to the problem:
- Data Pump export of tables with NOT NULL and referential integrity constraints
- Data Pump import with EXCLUDE=CONSTRAINT

For example:

==> In source database a table has the following structure:

Also, if using Data Pump import (impdp) with INCLUDE=CONSTRAINT parameter, NOT NULL constraints are not imported.


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