The C-JDBC team is proud to announce a new major release of C-JDBC after months of efforts and contributions.
C-JDBC 1.1 includes a major controller replication refactoring using the new Tribe group communication library (http://tribe.objectweb.org), enhancements to caching, a new featured-rich SQL console (iSQL), improved management consoles and management features, many fixes especially syncrhonization issues under high loads, many components upgraded (Hsqldb, JMX, ...) and documentation updates.

We encourage all users to upgrade to this new version since it improves on many reliability aspects over previous versions. Don't hesitate to share your experience and participate to our http://c-jdbc.objectweb.org

The C-JDBC team

The end of the post was supposed to be: participate to our online survey. We would like to understand more about your uses of C-JDBC and the direction you would like it to take.

The URL for the survey is http://www.zoomerang.com/survey.zgi?p=WEB2244QE4G2CX

First: not everybody is aware of what C-JDBC is, so it helps the readers and the project to tell what it is and why it is useful. These two sentences should be repeated again and again and ..

Second: http://c-jdbc.objectweb.org is not accessible.

ADODB.Command<br>[zUtil.Taking] StartSurvey [on SCWEB1655033 version 4.1.0] error '800a0d5d'

Application uses a value of the wrong type for the current operation.

/includes/library/vb/ValidatePin.vbs, line 3

Stephan Albers

"C-JDBC is a database cluster middleware that allows any Java application (standalone application, servlet or EJB container, ...) to transparently access a cluster of databases through JDBC(tm). The database is distributed and replicated among several nodes and C-JDBC balances the queries among these nodes. C-JDBC handles node failures and provides support for checkpointing and hot recovery."

Hi Stephan,

Sorry for not mentionning what C-JDBC is about, it has been around for quite some time and I made the wrong assumption that it was so popular that no introduction was necessary!

Second: http://c-jdbc.objectweb.org is not accessible.ADODB.Command<br>[zUtil.Taking] StartSurvey [on SCWEB1655033 version 4.1.0] error '800a0d5d'Application uses a value of the wrong type for the current operation./includes/library/vb/ValidatePin.vbs, line 3

The site http://c-jdbc.objectweb.org seems to be up and running. Can you access http://www.objectweb.org at all?
The error seems to come from the survey that can be accessed from http://www.zoomerang.com/survey.zgi?p=WEB2244QE4G2CX
Don't hesitate to let us know if you have any problem with the survey.

Thanks,
Emmanuel

The http://c-jdbc.objectweb.org page works. It's the link at the top of this page, that says its this link but is really the survey link, that is broken.

The http://c-jdbc.objectweb.org page works. It's the link at the top of this page, that says its this link but is really the survey link, that is broken.

I couldn't find any broken link. Which broken link is referenced by the page? Could that be an issue with your browser?

Thanks for the feedback,
Emmanuel

Sorry for not mentionning what C-JDBC is about, it has been around for quite some time and I made the wrong assumption that it was so popular that no introduction was necessary!

Emmanuel, I've yet to see C-JDBC outside of announcements on this site, so I'd suggest assuming that people don't know what it is. A lot of people I talk to don't know what Spring is, and only recently have heard of Hibernate. The best thing you can do for spreading good news about your project is to be clear about why it helps (what problems it solves), and show some real world examples (customer stories, etc.)

Peace,

Cameron Purdy
Tangosol, Inc.
Coherence: Shared Memories for J2EE Clusters

Hello,

I wonder, is locking done still on table level ? How c-jdbc fits for OLTP apps ?

Arvis

Hi Arvis,

Hello,I wonder, is locking done still on table level ? How c-jdbc fits for OLTP apps ?

This can be configured. Either you let C-JDBC perform the locking and it is a table/column level locking, or you configure C-JDBC to be pass-through to let the database do the locking (we just send the queries in the same serial order and let all databases manage their locks).

Emmanuel

Emmanuel,

congrats for the new version! I'm preparing to update the whole OpenUSS site, which has now almost 20,000 users, with the new infrastructure Enhydra Enterprise 6.x which contains the J2EE certified JOnAS version. This time I'll install C-JDBC too. Do you plan to integrate C-JDBC with Enhydra Enterprise, so we can just install it together with EE?

Thanks a lot!
Lofi.
OpenUSS.

Hi Lofi

Do you plan to integrate C-JDBC with Enhydra Enterprise, so we can just install it together with EE?

There is an ongoing work to package C-JDBC with JOnAS, so as the new Enhydra Enterprise is based on JOnAS, that could be the right way to go. Note that RedHat is working in this integration too and C-JDBC will be in RHAS 2.

Emmanuel