Monitoring

External Article

Building a Custom Blocked Process Report

  • Article

Blocking in SQL Server is normal behavior, but excessive blocking can lead to many complaints and is a symptom of poor performance. SQL Server contains a vast amount of information that can help when troubleshooting performance issues like blocking, but understanding and gathering that information when you need it is a lot of work. Darko Martinovic explains his solution for a custom blocking report.

2018-02-06

3,868 reads

External Article

5 Monitoring Queries for SQL Server

  • Article

Every DBA squirrels away favourite queries for monitoring SQL Server. Nowadays many of these are too complex to keep in your head. Dennes describes how he uses T-SQL queries for solving problems, whether it involves fixing the problems of missing indexes, preventing unrestrained autogrowth, avoiding index fragmentation, checking whether jobs have failed or avoiding memory stress conditions.

2016-07-08

10,110 reads

External Article

Survey on SQL Server Monitoring

  • Article

If looking after the health of SQL Server is part of your responsibility, Redgate would love to hear your views on monitoring server health through this 10 minute survey. Complete the survey by May 15th to be in with the chance to win one of three $50 Amazon vouchers.

2015-04-28

7,309 reads

External Article

Centralize Your Database Monitoring Process

  • Article

SQL Server Data Collector, together with Management Data Warehouse, is a fine and useful component for gathering information centrally about how SQL Server instances are being used, and thereby keeping an eye out for problems. It comes into its own when you have figured out how to configure it to run on maybe hundreds of instances using Central Management Server. Dennes describes how to tame the system so that it scales.

2015-02-04

8,923 reads

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The Empty Aggregate

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Question of the Day

The Empty Aggregate

I have this table in a SQL Server 2025 database:

CREATE TABLE [dbo].[CustomerOrder]
(
[OrderID] [int] NULL,
[CustomerID] [int] NULL,
[total] [money] NULL
) ON [PRIMARY]
GO
What is returned from this code? (answers are for the sum and then the count)
SELECT SUM(total) AS sum,
       COUNT(total) AS count
FROM dbo.CustomerOrder;



See possible answers