Oracle Error Message
SQL*Loader-00486: sql-strings may not be specified for collection field string
Reason for the Error
A sql-string was specified as part of the description of the field that is inside a nested table or varray. Sql-strings cannot be used to load a field in a varrary or nested tables.
Solution
Remove the sql-string from the field description. Modify the data file so that it contains the values to be loaded into the column in the collection.