CLOB update ,insert and select

Question

hi,
could any one tell me which is the best approach to insert, update and select CLOB valoues
and also which CLOB to use (ie java.sql.CLOB or oracle.sql.CLOB) in an oracle database

Answer 1

I'd generally recommend to use the methods in java(x).sql only (for portability reasons).
Update:
ResultSet r = ...;
Clob text = r.getClob(1);
Writer w = text.setCharacterStream(0);
w.write("some text");Insert:
Problem: Clob instantiation.
Either ensure that an empty clob is created as default for clob colums
or use database-specific code like "insert into tab(id, text) values(1, dbms_lob.create_clob...)"
and update that row as above.
Select
Use getString for clobs or (to prevent truncating)
ResultSet r = ...;
Clob c = r.getClob(1);
Reader r = c.getCharacterStream(0);Regards,