The Windows Path variable is a list of folders that Windows searches when you type a program name. This post shows how to test a change in one window, add a folder for good and check that it works. It uses oStress and sqlcmd as the examples and ends with rules for a clean Path.
Entity-Attribute-Value Tables: Why They Hurt Queries
Understand entity-attribute-value query costs, lost types, indexing limits, and alternatives using real columns, sparse columns, or JSON.
Stress Testing with oStress – SQL in Sixty Seconds #087
One of the things which we cover in my Comprehensive Database Performance Health Check is how to do Load Testing or Stress Testing with oStress.
OPTIMIZE_FOR_SEQUENTIAL_KEY: Test the Last Page Insert Fix
OPTIMIZE_FOR_SEQUENTIAL_KEY is an index option that targets last page insert contention. This post tests it with 32 connections that insert into a clustered identity key, with the option off and on. The option changes the kind of waiting, and the post shows how to decide whether it helps your table.
SQL SERVER – Last Page Insert PAGELATCH_EX Contention Due to Identity Column
Today’s goal is to understand what is the Last Page Insert PAGELATCH_EX Contention Due to Primary Key. Let us start understanding it together.
Recovery Model Insert Test: FULL vs SIMPLE Under Load
A recovery model insert test compares FULL and SIMPLE under a load of 16 connections. The log written is almost the same in both, and the elapsed time depends more on the server than on the model. The real difference is when the log can be reused, and this post shows that step by step.
How to Get Details of All Files Associated with Database from MDF? – Interview Question of the Week #275
Question: How to Get Details of All files Associated with Database from MDF? Let us learn about the DBCC command DBCC command dbcc checkprimaryfile.