Cannot use jstl tag for jsp page which generated from Human Task

Hi
Plz help me.
I have tried to using jstl in jsp which generate from Human Task and I deploy it to server( by ant on Jdev ) to see task detail in Oracle Worklist application. But when i submit task and then I access to worklist to see task detail, the error has show in page that "OracleJSP: An error occurred. Consult your application/system administrator for support. Programmers should consider setting the init-param debug_mode to "true" to see the complete exception message. " .
I access server to see application.log to see error and I see error show "workflowform: JspServlet: unable to dispatch to requested page: Exception:oracle.jsp.parse.JspParseException: /Header1.jsp: Line # 3, <%@ taglib uri="http://java.sun.com/jstl/core_rt" prefix="c"%> "
How do I fix this error?
PS. I tried to us jstl because I need to connet to database which jstl tag(sql) if somebody has another solution for connect database in task detail page, Please help suggest me.
Thanks
user520932

Is the jstl tag libray loaded in the appsserver?
Can you use jdbc connection like
DataSource ds = ic.lookup("java:comp/env/jdbc/myDB");
Connection con = ds.getConnection();
DataSource ds = (DataSource) org.apache.derby.jdbc.ClientDataSource()
ds.setPort(1521);
ds.setHost("localhost");
ds.setUser("APP")
ds.setPassword("APP");
Connection con = ds.getConnection();
http://java.sun.com/docs/books/tutorial/jdbc/basics/connecting.html

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Edited by: user12864851 on 15 ม.ค. 2554, 22:59 น.

Ok, I did a bit more experimenting, and web searching, and found you are the victim of the UTF-8 BOM bug.
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