Oracle 8.0.5 LOBS & Trigger

I need to create a trigger to perform application specific auditing on a table containing a blob (and I do mean BLOB not LONG RAW) column. I code in the trigger is:
base table

t_item

id             number(10) not null PK
blobcol     blob

I have an insert/update trigger on T_ITEM that tries to do the following

insert into t_item_audit (id, blobcol, mod_dt) values(:new.id, :new.blobcol,sysdate);

When the trigger fires I get the following error:

ORA-22275: invalid LOB locator specified

Any help would be appreciated.
Kirk Received on Tue Nov 24 1998 - 07:23:47 CST