diff --git a/tests/RUNNING_TESTS.txt b/tests/RUNNING_TESTS.txt
index 59197acc0f..705fb28d07 100644
--- a/tests/RUNNING_TESTS.txt
+++ b/tests/RUNNING_TESTS.txt
@@ -43,6 +43,25 @@ will run phpunit with the same parameters as in the shown test_config.php file:
       PHPBB_TEST_DBNAME='database' PHPBB_TEST_DBUSER='user' \
       PHPBB_TEST_DBPASSWD='password' phpunit
 
+Special Database Cases
+----------------------
+In order to run tests on some of the databases that we support, it will be
+necessary to provide a custom DSN string in test_config.php. This is only needed for
+MSSQL 2000+ (PHP module), MSSQL via ODBC, and Firebird when PDO_Firebird does not work
+on your system (https://bugs.php.net/bug.php?id=61183). The variable must be named $custom_dsn.
+
+Examples:
+Firebird using http://www.firebirdsql.org/en/odbc-driver/
+$custom_dsn = "Driver={Firebird/InterBase(r) driver};dbname=$dbhost:$dbname";
+
+MSSQL
+$custom_dsn = "Driver={SQL Server Native Client 10.0};Server=$dbhost;Database=$dbname";
+
+The other fields in test_config.php should be filled out as you would normally to connect
+to that database in phpBB.
+
+Additionally, you will need to be running the DbUnit fork from https://github.com/phpbb/dbunit/tree/phpbb.
+
 Running
 =======
 
diff --git a/tests/test_framework/phpbb_database_connection_helper.php b/tests/test_framework/phpbb_database_connection_helper.php
new file mode 100644
index 0000000000..e1c50655ed
--- /dev/null
+++ b/tests/test_framework/phpbb_database_connection_helper.php
@@ -0,0 +1,24 @@
+<?php
+/**
+* Used for passing in information about the PDO driver
+* since the PDO class reveals nothing about the DSN that
+* the user provided.
+*
+* This is used in the custom PHPUnit ODBC driver
+*/
+class phpbb_database_connection_ODBC_PDO_wrapper extends PDO
+{
+	//Name of the driver being used (i.e. mssql, firebird)
+	public $driver = '';
+
+	//Version number of driver since PDO::getAttribute(PDO::ATTR_CLIENT_VERSION) is pretty useless for this
+	public $version = 0;
+
+	function __construct($dbms, $version, $dsn, $user, $pass)
+	{
+		$this->driver = $dbms;
+		$this->version = (double)$version;
+
+		parent::__construct($dsn, $user, $pass);
+	}
+}
\ No newline at end of file
diff --git a/tests/test_framework/phpbb_database_test_case.php b/tests/test_framework/phpbb_database_test_case.php
index e742b543b0..0e5518fef8 100644
--- a/tests/test_framework/phpbb_database_test_case.php
+++ b/tests/test_framework/phpbb_database_test_case.php
@@ -28,6 +28,28 @@ abstract class phpbb_database_test_case extends PHPUnit_Extensions_Database_Test
 		);
 	}
 
+	public function createXMLDataSet($path)
+	{
+		$db_config = $this->get_database_config();
+
+		//Firebird requires table and column names to be uppercase
+		if($db_config['dbms'] == 'firebird')
+		{
+			$xml_data = file_get_contents($path);
+			$xml_data = preg_replace_callback('/(?:(<table name="))([a-z_]+)(?:(">))/', 'phpbb_database_test_case::to_upper', $xml_data);
+			$xml_data = preg_replace_callback('/(?:(<column>))([a-z_]+)(?:(<\/column>))/', 'phpbb_database_test_case::to_upper', $xml_data);
+
+			$temp = tmpfile();
+			fwrite($temp, $xml_data);
+			fseek($temp, 0);
+
+			$meta_data = stream_get_meta_data($temp);
+			$path = $meta_data['uri'];
+		}
+
+		return parent::createXMLDataSet($path);
+	}
+
 	public function get_test_case_helpers()
 	{
 		if (!$this->test_case_helpers)
@@ -106,4 +128,9 @@ abstract class phpbb_database_test_case extends PHPUnit_Extensions_Database_Test
 	{
 		return new phpbb_database_test_connection_manager($config);
 	}
+
+	public static function to_upper($matches)
+	{
+		return $matches[1] . strtoupper($matches[2]) . $matches[3];
+	}
 }
diff --git a/tests/test_framework/phpbb_database_test_connection_manager.php b/tests/test_framework/phpbb_database_test_connection_manager.php
index c734c90a1a..328d90fca9 100644
--- a/tests/test_framework/phpbb_database_test_connection_manager.php
+++ b/tests/test_framework/phpbb_database_test_connection_manager.php
@@ -8,6 +8,7 @@
 */
 
 require_once dirname(__FILE__) . '/../../phpBB/includes/functions_install.php';
+require_once 'phpbb_database_connection_helper.php';
 
 class phpbb_database_test_connection_manager
 {
@@ -83,9 +84,37 @@ class phpbb_database_test_connection_manager
 			break;
 		}
 
+		//These require different connection strings on the phpBB side than they do in PDO
+		//so you must provide a DSN string for ODBC separately
+		if($this->config['dbms'] == 'mssql' || $this->config['dbms'] == 'firebird')
+		{
+			if(!empty($this->config['custom_dsn']))
+			{
+				$dsn = 'odbc:' . $this->config['custom_dsn'];
+			}
+		}
+
 		try
 		{
-			$this->pdo = new PDO($dsn, $this->config['dbuser'], $this->config['dbpasswd']);
+			switch($this->config['dbms'])
+			{
+				case 'mssql':
+				case 'mssql_odbc':
+					$this->pdo = new phpbb_database_connection_ODBC_PDO_wrapper('mssql', 0, $dsn, $this->config['dbuser'], $this->config['dbpasswd']);
+				break;
+
+				case 'firebird':
+					if(!empty($this->config['custom_dsn']))
+					{
+						$this->pdo = new phpbb_database_connection_ODBC_PDO_wrapper('firebird', 0, $dsn, $this->config['dbuser'], $this->config['dbpasswd']);
+						break;
+					}
+					//Fall through if they're using the firebird PDO driver and not the generic ODBC driver
+
+				default:
+					$this->pdo = new PDO($dsn, $this->config['dbuser'], $this->config['dbpasswd']);
+				break;
+			}
 		}
 		catch (PDOException $e)
 		{
@@ -93,8 +122,7 @@ class phpbb_database_test_connection_manager
 			throw new Exception("Unable do connect to $cleaned_dsn using PDO with error: {$e->getMessage()}");
 		}
 
-		// good for debug
-		// $this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+		$this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
 	}
 
 	/**
@@ -125,12 +153,41 @@ class phpbb_database_test_connection_manager
 				}
 			break;
 
+			case 'firebird':
+				$this->connect();
+				// Drop all of the tables
+				foreach ($this->get_tables() as $table)
+				{
+					$this->pdo->exec('DROP TABLE ' . $table);
+				}
+				$this->purge_extras();
+			break;
+
+			case 'oracle':
+				$this->connect();
+				// Drop all of the tables
+				foreach ($this->get_tables() as $table)
+				{
+					$this->pdo->exec('DROP TABLE ' . $table . ' CASCADE CONSTRAINTS');
+				}
+				$this->purge_extras();
+			break;
+
 			default:
 				$this->connect(false);
 
 				try
 				{
 					$this->pdo->exec('DROP DATABASE ' . $this->config['dbname']);
+
+					try
+					{
+						$this->pdo->exec('CREATE DATABASE ' . $this->config['dbname']);
+					}
+					catch (PDOException $e)
+					{
+						throw new Exception("Unable to re-create database: {$e->getMessage()}");
+					}
 				}
 				catch (PDOException $e)
 				{
@@ -139,9 +196,8 @@ class phpbb_database_test_connection_manager
 					{
 						$this->pdo->exec('DROP TABLE ' . $table);
 					}
+					$this->purge_extras();
 				}
-
-				$this->pdo->exec('CREATE DATABASE ' . $this->config['dbname']);
 			 break;
 		}
 	}
@@ -317,4 +373,44 @@ class phpbb_database_test_connection_manager
 			throw new Exception($message);
 		}
 	}
+
+	/**
+	* Removes extra objects from a database. This is for cases where dropping the database fails.
+	*/
+	public function purge_extras()
+	{
+		$this->ensure_connected(__METHOD__);
+		$queries = array();
+
+		switch ($this->config['dbms'])
+		{
+			case 'firebird':
+				$sql = 'SELECT RDB$GENERATOR_NAME
+					FROM RDB$GENERATORS
+					WHERE RDB$SYSTEM_FLAG = 0';
+				$result = $this->pdo->query($sql);
+
+				while ($row = $result->fetch(PDO::FETCH_NUM))
+				{
+					$queries[] = 'DROP GENERATOR ' . current($row);
+				}
+			break;
+
+			case 'oracle':
+				$sql = 'SELECT sequence_name
+					FROM USER_SEQUENCES';
+				$result = $this->pdo->query($sql);
+
+				while ($row = $result->fetch(PDO::FETCH_NUM))
+				{
+					$queries[] = 'DROP SEQUENCE ' . current($row);
+				}
+			break;
+		}
+
+		foreach($queries as $query)
+		{
+			$this->pdo->exec($query);
+		}
+	}
 }