Sorry, but I'm not able to reproduce this in the latest version (17.3.1).
Following those steps with a table created, populated and queried like so:
drop table t purge;
create table t (x int, c clob);
declare
l varchar2(32000) := rpad('aaaaaa', 2000, 'x');
begin
insert into t values (1, l);
end;
/
select * from t;
Gives the following export file:
REM INSERTING into EXPORT_TABLE
SET DEFINE OFF;
Insert into EXPORT_TABLE (X) values (1);
And the docs still state:
For CLOB data, exporting is supported only if the format is loader (SQL*Loader) or pdf (PDF). Some export types export only a subset of the string followed by an ellipsis (...). https://docs.oracle.com/database/sql-developer-17.3/DMDUG/data-modeler-dialogs.htm#f1_idedexportobjects_html Could you provide the create table, inserts and select you used to get clob data in your insert export?