Oracle : Ошибка ORA-32339


"cannot alter materialized view with the PMOP"
*Cause: the materialized view is not allowed to have destructive PMOPS
such as DROP, TRUNCATE and EXCHANGE (sub)partition. The UGA flag
of i_am_a_refresh should be set first.
*Action: execute set_i_am_a_refresh first before alter materialized view
with the PMOP.

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