Oracle : Ошибка 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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