Oracle : Ошибка ORA-30355

"materialized view container does not exist"
*Cause: A DROP TABLE command was issued directly against the materialized
view container table.

*Action: Use the DROP MATERIALIZED VIEW command to clean up the residual
meta data for the materialized view. Then use the CREATE
MATERIALIZED VIEW statement to recreate the materialized view.
Thereafter, use the DROP MATERIALIZED VIEW command rather than the
DROP TABLE command to drop a materialized view.

Попробовать перевести

Поискать эту ошибку на форуме