ORA-02266

ORA-02266: unique/primary keys in table referenced by enabled foreign keys

Cause: An attempt was made to truncate a table with unique or primary keys referenced by foreign keys enabled in another table. Other operations not allowed are dropping/truncating a partition of a partitioned table or an ALTER TABLE EXCHANGE PARTITION.

Action: Before performing the above operations the table, disable the foreign key constraints in other tables. You can see what constraints are referencing a table by issuing the following command:

SELECT * FROM USER_CONSTRAINTS WHERE TABLE_NAME = "tabnam";

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