On some systems Spotlight On Messaging fails to connect to the BB configuration database if the SQL Server Instance hosting BB database is configured to use a non-default port.
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To resolve the issue consider one of the following:
1. Make sure the SQL Server Browser service is running on SQL server (SQL 2005 and later). SQL Browser service automatically redirects clients connecting to SQL Instance without specifying a port number.
2. Create an alias for the SQL Server instance using SQL Server Client Network Utility (SQL 2000) or SQL Server Configuration Manager (SQL 2005 and later) on the SQL server hosting the Blackberry database. Creating an alias allows you to specify the port number that is used whenever clients try to connect to the SQL named instance.
More information can be found at the below link:
http://www.databasejournal.com/features/mssql/article.php/3689846/Using-Non-Standard-Port-for-SQL-Server.htm