SQL Performance

JUNE 21, 2019

I've been teaching and writing about common SQL Server mistakes for many years. This article will expand on my previous article and point out how these apply to SQL Server , Azure SQL Database , and Azure SQL Managed Instance. SQL Server Agent alerts. This situation applies to on-premises SQL Server and IaaS.

Servers 49

Servers Azure Hardware Database 49

SQL Performance

MARCH 17, 2020

This follow-up post revisits the question for SQL Server 2019, using a larger number of rows. I will be using the 50GB Stack Overflow 2013 database , but any large table with a low number of distinct values would do. The Stack Overflow 2013 database comes without nonclustered indexes to minimize download time. Test Environment.

Servers 86

Servers Tuning Database Efficiency 86

SQL Performance

AUGUST 27, 2019

On August 7, 2019, AMD finally unveiled their new 7nm EPYC 7002 Series of server processors, formerly code-named "Rome" at the AMD EPYC Horizon Event in San Francisco. This is the second generation EPYC server processor that uses the same Zen 2 architecture as the AMD Ryzen 3000 Series desktop processors.

Servers 52

Servers Benchmarking Virtualization Architecture 52

All Things Distributed

MARCH 24, 2011

The images from the 2008 TNW Conference have travelled around the world in my Animoto demo: This year TNW is showing that it is not just a conference for talkers but also for builders by organizing a massive Hackaton in the two days running up to the conference. Job Openings in AWS - Senior Leader in Database Services.

AWS 74

AWS Internet Internet Storage 74

SQL Performance

JULY 16, 2019

A close monitoring of the hardware enthusiast community, including many of the most respected hardware analysts and reviewers paints an even more dire picture about Intel in the server processor space. Despite all of this, Intel is not going to lose their entire server processor business any time soon. So, what has changed my mind?

Servers 46

Servers Hardware Architecture Retail 46

SQL Performance

SEPTEMBER 6, 2022

Let’s look at some examples using a fresh database. I happen to be using SQL Server 2019 CU16 but the details I’ll describe haven’t materially changed since partition level lock escalation was added to SQL Server 2008. USE master ; -- Create a new test database. -- COLLATE clause only to remind people it exists.

Database 98

Database Testing Storage Servers 98

SQL Performance

MAY 1, 2020

In a recent tip , I described a scenario where a SQL Server 2016 instance seemed to be struggling with checkpoint times. Still, if you stack a bunch of high-transaction databases on there, checkpoint processing can get pretty sluggish. A SQL Server DBA myth a day: (15/30) checkpoint only writes pages from committed transactions.

C++ 58

C++ Database Servers Storage 58

SQL Server According to Bob

JANUARY 26, 2017

My goal is to resolve mysteries about SQL Server I encounter but do this without going straight the source code first. The first case that helped me start this journey was asked by a MVP within the SQL Server community (his first name starts with Joey<g>). That is to ensure your database is encrypted at the file level.

Servers 40

Servers Database Azure Cache 40

SQL Performance

OCTOBER 29, 2019

There are multiple methods to look at poorly performing queries in SQL Server, notably Query Store, Extended Events, and dynamic management views (DMVs). In order to use Query Store and Extended Events, you have to configure them in advance – either enabling Query Store for your database(s), or setting up an XE session and starting it.

C++ 74

C++ Database Servers Tuning 74

SQL Performance

APRIL 26, 2019

If so, you may have heard about the Azure SQL Database DTU calculator , and you may have also read about how it has been reverse engineered by Andy Mallon. Database – Log Bytes Flushed/sec. When I looked through the SentryOne database, I found that 3 of the 4 counters were already being captured by default.

Azure 40

Azure Database Metrics Servers 40

All Things Distributed

APRIL 19, 2010

Here are the laurels given by the editors: Debuting in November 2008, Amazons entry into the CDN market quickly became a major player. a Fast and Scalable NoSQL Database Service Designed for Internet Scale Applications. Job Openings in AWS - Senior Leader in Database Services. No Server Required - Jekyll & Amazon S3.

Media 60

Media AWS Storage Big Data 60

Percona

JUNE 4, 2023

In this blog, we’ll provide a comparison between MariaDB vs. MySQL (including Percona Server for MySQL ). Introduction: MariaDB vs. MySQL The goal of this blog post is to evaluate, at a higher level, MariaDB vs. MySQL vs. Percona Server for MySQL side-by-side to better inform the decision making process. What is MariaDB?

Open Source 52

Open Source Servers Storage Scalability 52

SQL Server According to Bob

JULY 12, 2016

For SQL Server 2008, 2012 and 2014 the trace flag behavior remains the same. For SQL Server 2016 the trace flags are available but the behavior may be altered by the design changes. Trace flag 2549 is used to change how DBCC sees the volume layout of the database. This is behavior is unchanged in SQL Server 2016.

Servers 40

Servers Design Engineering Database 40

SQL Server According to Bob

JUNE 3, 2016

SQL Server 2016 ‘It Just Runs Faster’ A bold statement that any SQL Server professional can stand behind with confidence. Try SQL Server 2016 Today. The SQL Server Development team tasked several individuals with scalability improvements and real world testing patterns. – [link]. Follow-up.

Hardware 40

Hardware Software Engineering Transportation Scalability 40

SQL Performance

JANUARY 22, 2020

Table-valued parameters have been around since SQL Server 2008 and provide a useful mechanism for sending multiple rows of data to SQL Server, brought together as a single parameterized call. } ; We now have correct lengths for the column definitions, and we won't be passing them as LOBs over TDS to SQL Server.

Servers 55

Servers Azure Hardware Network 55

SQL Performance

MAY 16, 2019

Without this guarantee, SQL Server might add index rows that are not sorted correctly, which would not be good. For INSERT.SELECT , SQL Server makes its own determination whether to ensure rows are presented to the Clustered Index Insert operator in key order or not. DMLRequestSort Conditions.

Cache 67

Cache Servers Testing Storage 67

O'Reilly

JULY 25, 2023

And if I switch tabs to view a paper from 2008, then a song from 2008 could start up. To provide some coherence to the music, I decided to use Taylor Swift songs since her discography covers the time span of most papers that I typically read: Her main albums were released in 2006, 2008, 2010, 2012, 2014, 2017, 2019, 2020, and 2022.

Programming 98

Programming Code Design Benchmarking 98

SQL Performance

MAY 29, 2019

It can be activated from SQL Server 2008 to 2014 inclusive using documented trace flag 610. From SQL Server 2016 onward, FastLoadContext is enabled by default ; the trace flag is not required. For more background, see the Data Performance Loading Guide and the Tiger Team notes on the behaviour changes for SQL Server 2016.

Cache 64

Cache Testing Servers Code 64

SQL Server According to Bob

JANUARY 11, 2020

Using SQL Server’s SNITrace to Troubleshoot Networking Issues In the process of tracking down a few TCP 10054 issues (highlighted here: ​​ [link] ) I ​​ also ​​ used ​​ the ​​ SNITrace ​​ (SNI Trace) ​​ capabilities.

Network 40

Network Servers Processing Software Engineering 40

Percona

JANUARY 14, 2019

What if we use ClickHouse (which is a columnar analytical database) as our main datastore? Well, typically, an analytical database is not a replacement for a transactional or key/value datastore. Although such databases can be very efficient with counts and averages, some queries will be slow or simply non existent. Processed 4.15

Database 48

Database Analytics Blockchain Healthcare 48