Get the LENGTH of a LONG RAW

Question

I have a table with a column of data type LONG RAW. How do I determine the size (in bytes) of the data in this column?

If I call the LENGTH

Answer 1

One dirty trick, which might help if you're playing with a small test database: copy all data in a table with a BLOB instead of a LONG RAW.

create table START(ID int not null, VAL long raw);
... inserts
create table START_BLOB(ID int not null, VAL blob);
insert into START_BLOB(ID,VAL) select ID,to_lob(VAL) from STAR;
select ID,length(VAL) from START_BLOB;