CLOB inserting data into Oracle database error problem

Inserting an article (1000~2000) into the Clob property of a database today in a project will report an error with a string that is too long.

The internet says to deal with the stream, not to do so. This is like a bug, as long as the inserted data, the default expansion to more than 2000 is OK.

Here's the code:

if ((Temp.length () >=1000) && (Temp.length () <=2000){            temp=stringutils.rightpad (temp, 2008 );  }

Use StringUtils's Rightpad method to make no more than 2000 of the parts, automatically fill 0 on the right until 2008 length.

(one half-width character, one byte, one full-width character two bytes, so kanji 1000-2000, and English 2000-4000)