Administration

External Article

SQL Server Lazy Writer Issue: Warning, No Free Buffers Found

  • Article

This tip is intended to help someone who is or will be facing a no free buffer found issue with the SQL Server LazyWriter. Recently, we experienced some unknown issues with our SQL Server and after inspecting the error log file we noticed the following errors: "SQL Server has encountered 50 occurrence(s) of I/O requests taking longer than 15 seconds to complete on file..." and "LazyWriter: warning, no free buffers found." These error messages were followed by a SQL Server memory dump file like SQLDump0030.mdmp in the file system.

2010-02-23

2,484 reads

External Article

Managing Data Growth in SQL Server

  • Article

'Help, my database ate my disk drives!'. Many DBAs spend most of their time dealing with variations of the problem of database processes consuming too much disk space. This happens because of errors such as incorrect configurations for recovery models, data growth for large objects and queries that overtax TempDB resources. Rodney describes, with some feeling, the errors that can lead to this sort of crisis for the working DBA, and their solution.

2010-02-01

3,624 reads

External Article

Best Practice for renaming a SQL Server Database

  • Article

One of the Junior SQL Server Database Administrator in my company approached me yesterday with a dilemma. He was assigned a task to rename few of the databases in Beta and Production environments; the reason being the database name was based on some other project that is no longer relevant to the data which is presently stored within the database. At first I started to tell him, but figured it would be smarter to document the same and share the information.

2009-12-08

6,195 reads

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Question of the Day

ORDER BY alias

There is a table tmp_tab: 

CREATE TABLE tmp_tab (
id int,
val int
);
INSERT INTO tmp_tab VALUES
(1, 1),
(2, NULL),
(3, 3),
(4, 4),
(5, 5);
You want to order the rows ids by the following expression: 
    ISNULL(val, id) + 1
Which of the following queries produces the expected ordering and why? (Select all correct)

See possible answers