Oracle Error ORA-02449: unique/primary keys in table referenced by foreign keys

Oracle Error Message

ORA-02449: unique/primary keys in table referenced by foreign keys

Reason for the Error

An attempt was made to drop a table with unique or primary keys referenced by foreign keys in another table.

Solution

Before performing the above operations the table, drop 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”;