SQL Agent Jobs Summary
A script that summarizes information about SQL Agent job execution history. Much in the same way as the Job Activity Monitor, but with some additional information. Also, this script allows you to run it from T-SQL solutions.
SQL Server Default Trace
The default setting in SQL Server 2005 and later is to keep a trace running all the time that captures basic information about the instance. This is called the Default Trace. The created trace files can be viewed in Performance Monitor or by using T-SQL and they can be very useful in some troubleshooting scenarios.
SQL Server Alert not firing
When you set up SQL Server alerts on your SQL Server instance, make sure to run some tests to verify that they are actually firing when errors occur.