ORA-30355

Error: ORA-30355: materialized view container does not exist

Causa: A DROP TABLE command was issued directly against the materialized view container table.

Acción: Use the DROP MATERIALIZED VIEW command to clean up the residual metadata for the materialized view. Then use the CREATE MATERIALIZED VIEW statement to re-create the materialized view. Thereafter, use the DROP MATERIALIZED VIEW command rather than the DROP TABLE command to drop a materialized view.