SQL>
SQL> CREATE TABLE myClobTable (id NUMBER,clob_data CLOB);
Table created.
SQL>
SQL> CREATE TABLE myLongTable (id NUMBER,long_data LONG);
Table created.
SQL>
SQL> INSERT INTO myLongTable VALUES (100,RPAD('A',200000,'A'));
1 row created.
SQL>
SQL> update myClobTable set clob_data =(select to_lob(long_data)from
2 myLongTable where id =100)
3
SQL> drop table myLongTable;
Table dropped.
SQL>
SQL> drop table myClobTable;
Table dropped.