Is this possible? Or at least I'm looking to have a list of the size of all rows in a table.
select vsize(col1) + vsize(col2) + vsize(col3) +
long_raw_length_function(long_col) + DBMS_LOB.GETLENGTH(blob_col)
from table
where id_col = id_val;
for the long_raw_length_function, see this Get the LENGTH of a LONG RAW