Dba_cons_columns

Oracle SQL: Finding Missing Foreign Key Values (ORA-02298) Purpose This Oracle SQL query is designed to help identify missing foreign key values within your database. This is particularly useful when troubleshooting the ORA-02298: cannot validate (constraint_name) - parent keys not found error, which indicates a …

dba_constraints: Query All Oracle Table Constraints Purpose A DDL export shows every constraint as text, and a design tool shows them as a diagram. Neither lets you filter, sort or count. DBA_CONSTRAINTS does. It holds one row per constraint, so a single query can list the constraints on one table, show which are …