What causes ORA-02292?

Pipeline deletes or truncates a parent/reference table that still has dependent child rows. Cleanup script deletes parent rows before child rows are removed. Dimension table reload deletes old rows while fact table still references them

How do I fix ORA-02292?

Step 1: Delete or update child rows first before modifying the parent.. Step 2: Use CASCADE DELETE if the FK constraint allows it: `ALTER TABLE child ADD CONSTRAINT fk_name FOREIGN KEY (col) REFERENCES parent ON DELETE CASCADE;`.. Step 3: For pipeline reloads: truncate child table first, then parent table, then reload parent first.. Step 4: Temporarily disable the FK constraint during the reload: `ALTER TABLE child DISABLE CONSTRAINT fk_name;`.. Step 5: Add a pre-delete check to verify no dependent child rows exist.

Medium severitydata

Oracle Database Error:
ORA-02292

What does this error mean?

A DELETE or UPDATE on a parent table was blocked because child rows referencing it still exist.

Common causes

1Pipeline deletes or truncates a parent/reference table that still has dependent child rows
2Cleanup script deletes parent rows before child rows are removed
3Dimension table reload deletes old rows while fact table still references them

How to fix it

1Step 1: Delete or update child rows first before modifying the parent.
2Step 2: Use CASCADE DELETE if the FK constraint allows it: `ALTER TABLE child ADD CONSTRAINT fk_name FOREIGN KEY (col) REFERENCES parent ON DELETE CASCADE;`.
3Step 3: For pipeline reloads: truncate child table first, then parent table, then reload parent first.
4Step 4: Temporarily disable the FK constraint during the reload: `ALTER TABLE child DISABLE CONSTRAINT fk_name;`.
5Step 5: Add a pre-delete check to verify no dependent child rows exist.

Example log output

ORA-02292: integrity constraint (SCHEMA.FK_ORDER_CUSTOMER) violated — child record found
SQL: DELETE FROM customers WHERE id = 9999

Frequently asked questions

How do I identify which child rows are blocking the delete?

The error message includes the constraint name. Join user_constraints + user_cons_columns to find the child table and column, then query it for rows matching the parent key you are trying to delete.

Source · docs.oracle.com/error-help/db/ora-02292