Oracle : Ошибка ORA-03222

"average row size and row count must be greater than zero"
*Cause: Either a bad value passed to dbms_space.create_table_cost()
or explain plan did not pass through size information.
*Action: Check the row size parameter in dbms_space.create_table_cost().
For explain plan, make sure statistics have been computed
for all source tables in the CREATE TABLE AS SELECT statement.

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