Char array not long enough: javaCharsToUtf8Bytes

[Blue Jean]

Hi,

I have a column of datatype LONG and
using the following jdbc code to insert the data:

PreparedStatement ps = con.prepareStatement(command);
byte[] in = str.getBytes();
ps.setAsciiStream(1, new ByteArrayInputStream(in), in.length);
ps.executeUpdate();

It happens that, for str of ISO characters,
it can be larger than 4000 bytes, or much larger,
However, for some non-ISO characters,
around 4000 (not exact), it always gives me the following error:

java.sql.SQLException: Io exception: Char array not long enough:
javaCharsToUtf8Bytes

This happens to Oracle 8.17 with driver classes12.zip
and Oracle 9i with the ojdbc14.jar.

Anyone has similar experience, is there a solution?
Thanks.