Oracle Error Message
ORA-54605: CREATE_PC: scratch-tables/views (string) exist and need to be dropped
Reason for the Error
Transient tables/views from a previous CREATE_PC operation were still in existence.
Solution
Delete the invalid Point Cloud from the base table (for cleanup of scratch tables), and initialize and create the Point Cloud again. Alternately, use SDO_UTIL.DROP_WORK_TABLES with oidstring as the parameter.