Dynamic Management Views and Objects
The dynamic management view sys.dm_exec_cached_plans returns information on query plans currently in memory. This information can be useful for a lot of reasons: checking total memory allowed for cached plans, which plans aren’t getting reused, searching for certain query plan operators (for instance, scans), which query plans are high memory consumers etc.
In a previous post, I presented a solution for monitoring and logging long running queries in SQL Server. In this post I’ll show an extended version of that solution that also sends an email when a request has been blocked for more than 20 seconds.
Long running queries in a database may or may not be a problem, depending on the type of system. In a data warehouse solution, queries that runs for several minutes may be perfectly normal and nothing to worry about. But in an OLTP system, long running queries may cause performance problems. Read on to see how to monitor for long running queries in SQL Server.
Ever had the need to replace a piece of code in multiple SQL Server objects (Stored Procedure, Trigger, Function or Views)? Here’s a method to search for a string in all objects, replace it with some other code, and to finally script all changes. In other words, a method for mass editing SQL Server objects.
Some server wide settings can have major negative impact if they are changed in your SQL Server environment. So as a DBA it is a good practice to monitor changes to these setting, and to raise alerts when they are changed. To do this, the system view sys.configurations can be monitored for changes.
This blog post will demonstrate a way to monitor SQL Server configuration settings. The solution will also give you get the complete history for the different settings in sys.configurations.
Note that database mail needs to be configured for the current solution to work properly.
SQL Server roles can be used to give users server wide privileges. The server roles are sysadmin, securityadmin, serveradmin, setupadmin, processadmin, diskadmin, dbcreator and bulkadmin. The mapping between users and server roles can be found in the system view sys.server_role_members.
Here I’ll show a SQL script that lists all users and their server roles.
The system table sys.syslogins was marked as deprecated in SQL Server 2005, and is included up until 2012 for backwards compability only.
So what is the replacement of sys.syslogins? As it turns out, there is no exact match in SQL Server 2005 and later. Instead there are various system views that can be combined to gather the same information.
I created a SQL statement to combine those system views into a single view, matching the old sys.syslogins.
Want to know the disk space available on your database server from T-SQL? This can be done in many ways, here I'll present two of them. The first way is…
The system stored procedure sp_describe_first_result_set was introduced in SQL Server 2012 and it returns meta data about the first submitted T-SQL statement.