After upgrading Joomla from 1.7.3 to 2.5.1, existing slave works and report Joomla2.5.1. But trying to create a new slave:

1) Installation screen still says "Joomla 1.7.3 installation".
2) Installation hangs after the "License".
3) Slave site directory not fully populated.
# ls -l
total 16
drwxr-xr-x. 2 apache apache 4096 Mar 6 15:44 cache
-rw-r--r--. 1 apache apache 306 Mar 6 16:05 config_multisites.php
-rw-r--r--. 1 apache apache 44 Mar 6 15:44 index.html
drwxr-xr-x. 2 apache apache 4096 Mar 7 18:21 logs
4) Slave site error log:
[Thu Mar 08 14:35:34 2012] [error] [client 10.10.110.101] PHP Fatal error: Uncaught exception 'JDatabaseException' with message 'JLIB_DATABASE_ERROR_CONNECT_DATABASE' in /var/app/wjl/libraries/joomla/database/database.php:344\nStack trace:\n#0 /var/app/wjl/libraries/joomla/factory.php(710): JDatabase::getInstance(Array)\n#1 /var/app/wjl/libraries/joomla/factory.php(308): JFactory::createDbo()\n#2 /var/app/wjl/installation/models/fields/prefix.php(57): JFactory::getDbo()\n#3 /var/app/wjl/libraries/joomla/form/field.php(248): JFormFieldPrefix->getInput()\n#4 /var/app/wjl/libraries/joomla/form/form.php(560): JFormField->__get('input')\n#5 /var/app/wjl/installation/views/database/tmpl/default.php(106): JForm->getInput('db_prefix')\n#6 /var/app/wjl/libraries/joomla/application/component/view.php(742): include('/var/app/wjl/in...')\n#7 /var/app/wjl/libraries/joomla/application/component/view.php(301): JView->loadTemplate(NULL)\n#8 /var/app/wjl/installation/views/database/view.html.php(40): JView->display(NULL)\n#9 /var/app/wjl/installation/controller.php(70): JInstallationViewDatabase->display()\n#10 in /var/app/wjl/libraries/joomla/database/database.php on line 344, referer: myslave2.mycompany.com/installation/index.php

Is there other configuration needed for multisite after upgrading Joomla to 2.5.1?

Andrew Poon

As the "/installation" directory was the one of the joomla 1.7.3 then delete it and let JMS re-install a new "/installation" for the Joomla 2.5.
Ensure that you are using the latest JMS 1.2.78 or higher.

JMS is bundled with a copy of the "installation" directory for joomla 1.5, 1.6, 1.7 and 2.5.

Thanks.

The upgrade/installation of multisite 1.2.78 re-install the master installation directory:

# ls -ld installation*
drwxr-xr-x. 10 apache apache 4096 Mar 13 16:35 installation
drwxr-xr-x. 10 apache apache 4096 Jan 26 14:39 installation_to_delete

However, now the "Database Support:" in the Pre-installation Check become "No". How can I gain back the database support and continue?

Also noticed that the "Database support" didn't list "(mysql,mysqli)" but simply empty "()". Guess the multi-database support of Joomla2.5 somehow mess things up if we do upgrade instead of a fresh install.

BTW, I checked the installation/CHANGELOG and confirmed that it is the 2.5 installation directory.

Sorry but if you have the correct Joomla Installation directory, I don't know why you get this error message.
I don't see any other solution than debug joomla and trying to identify the reason of this error message.

If you want that we help you debug on your server, this is possible with our billable support that you can order at
www.jms2win.com/en/joomla-multisite?page...35&category_id=1