ORA-55764
Cannot DROP or MOVE tables with reservable columns. First run "ALTER TABLE <table_name> MODIFY (<reservable_column_name> NOT RESERVABLE)" and then DROP or MOVE the table.
Cause
An attempt is being made to DROP or MOVE a table with reservable columns.
Action
Run ALTER TABLE <table_name> MODIFY (<reservable_column_name> NOT RESERVABLE) before issuing a DROP or MOVE of the table.