did you try to deploy the app with all the frameworks (including the mysql 
driver) embedded?

I always copy the postgresql.jar into the library folder and add it to the path.


On Apr 27, 2014, at 4:20 PM, Ângelo Andrade Cirino <[email protected]> wrote:

> Hi,
> 
> I am migrating a deployment from an Ubuntu server to a CentOS install on 
> Rackspace with a cloud database separate from the web server, where WO and 
> Apache reside. The Ubuntu install runs fine, but in CentOS I am not able to 
> start my application from the command line neither from the WOMonitor. I am 
> getting the following exception:
> 
> Apr 27 20:07:40 Visiontur0.11[42504] DEBUG NSLog  - Using JDBCPlugIn 
> 'MySQLPlugIn' for JDBCAdaptor@365863915
> Apr 27 20:07:40 Visiontur0.11[42504] WARN  NSLog  - An exception occurred 
> while trying to open a channel: N/A
> Apr 27 20:07:40 Visiontur0.11[42504] ERROR 
> com.webobjects.eoaccess.ERXEntityDependencyOrderingDelegate  - Unexpected 
> non-EOGeneralAdaptorException exception
> IllegalStateException: _obtainOpenChannel -- 
> com.webobjects.eoaccess.EODatabaseContext 
> com.webobjects.eoaccess.EODatabaseContext@58383316: failed to open database 
> channel.  Check your connection dictionary, and ensure your database is 
> correctly configured.
> 
> For the record, I am able to connect to the MySQL server with mysql client in 
> the CentOS server, so it doesn't seem a firewall or database permission 
> issue. Anyway, the application deployed on the Ubuntu server has the same 
> configuration and runs flawlessly.
> 
> The MySQL JDBC driver is in /opt/Library/Frameworks and I used the following 
> instructions to install the deployment environment:
> 
> http://wiki.wocommunity.org/display/documentation/Deploying+on+Linux
> 
> What can I possibly be doing wrong?
> 
> Angelo
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