CMP EJB CLOB/BLOB retrieval issues from Oracle through JBoss

I have some EJB 2.0 CMP Entity Beans, deployed on a JBoss 3.07 application server.
In some of my beans I have Strings that I would like to map to a CLOB in my database as the Strings could easily be more than 4000 characters, and some byte arrays that I would like to map to a BLOB in my database to store files.
When I use PostgreSQL as my datastore in JBoss I can store and retrieve data from my CLOBs and BLOBs just fine.
However when I use an Oracle 9i (9.0.1) database for my datastore, I can write the information to the CLOB/BLOB fields (I can see it when I manually check the tables), but for some reason I cannot retrieve the information when I load my beans. The fields that map to the CLOB/BLOB are null, and eventually resave themselves overwriting the data in the database.
When I test using LONG RAW as a type it works perfectly, but LONG RAW is not a standard SQL type. I do not want to convert my beans to BMP, and also do not want to have any Oracle specific code in my beans to store retrieve my information. I need my beans to be completely database independant.
Does anyone have any ideas what could be causing my retrieval problem and what I could do to fix it?

I solved my problem.
I am using XDoclet to generate my bean interfaces and xml files etc., and it generates the jbosscmp-jdbc.xml file for me.
I forgot to add @jboss tags to my beans so that the jbosscmp-jdbc.xml file includes tags to overwrite the default cmp mapping (string to varchar) to be from string to clob for those specific long string fields that i want.

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passion_for_java wrote:
Will it make any difference if I select columns instead of ls.*
possibly, especially if there's a lot or data being returned.
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Well, there are a few things to consider...
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Friends.
I have connectivity issue from Oracle 9.2.0.1 to Sybase 12.5 ASE .I am connecting through the database link in oracle to access the tables.
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1) Learn SQL.
2) Learn Java.
3) Learn JDBC.
4) Learn DAO.
5) Learn HTTP.
6) Learn HTML.
7) Learn JSP/Servlet.
8) Learn JSTL.
9) Apply learned things and develop.
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Hi,
I would like to know whether it is possible to send an email from Oracle through a Lotus Domino Server(acting as mail server). If yes, please provide me with the details.
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Hello,
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Using Java to Retrieve Images from Oracle

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nologging as
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Best Regards,
Zaid

>
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>
must be
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Hi,
I re-open a new thread following the opened post 'Getting RPMs for php-oracle for PHP4.3 on RHEL 4.0 and issue with OCI8 '
I could re-installed PHP4.3 and apache 1.3.27 from the normal tar package (./configure then make) - I had some issues with the RPMs packages before.
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[Wed Jul 25 13:19:23 2007] [notice] child pid 25450 exit signal Segmentation fault (11)
[Wed Jul 25 13:19:31 2007] [notice] child pid 25451 exit signal Segmentation fault (11)
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You are in unchartered territory. But check the common "gotcha" and
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-- cj

Retrieving data from oracle database and displaying using servlets

//DataRetrieving.class file
import java.io.*;
import java.sql.*;
import javax.servlet.*;
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public class DataRetrieving extends HttpServlet{
public void doGet(HttpServletRequest request, HttpServletResponse response)throws
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I think I'm doing everything right, but still the following code does not
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%

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>
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Senior Support Engineer AGS Product Support, Global Support Center Canada
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