Scalegrid

FEBRUARY 17, 2020

In a MySQL master-slave high availability (HA) setup, it is important to continuously monitor the health of the master and slave servers so you can detect potential issues and take corrective actions. MySQL Master Server Health Checks. Assuming that the monitoring script is running on the same server as your MySQL server, you can check for the following: Ensure the MySQL service is running. Important Health Checks for your MySQL Master-Slave Servers Click To Tweet.

Servers 126

Servers Availability Programming Code 126

Scalegrid

MAY 13, 2019

MySQL Server generates several logs that can help you monitor the activities of the server. Setting Up MySQL Server Logging. Managing MySQL Server Logs: Rotate, Compress, Retain & Delete Click To Tweet. Check out these other posts to learn more about optimizing your MySQL deployments: Calculating InnoDB Buffer Pool Size for your MySQL Server. MySQL Tutorial – Configuring and Managing SSL On Your MySQL Server.

Servers 175

Servers Best Practices Efficiency Database 175

High Scalability

FEBRUARY 17, 2020

In a MySQL master-slave high availability (HA) setup, it is important to continuously monitor the health of the master and slave servers so you can detect potential issues and take corrective actions. MySQL Master Server Health Checks. In this blog post, we explain some basic health checks you can do on your MySQL master and slave nodes to ensure your setup is healthy.

Servers 165

Servers Programming Database Availability 165

SQL Shack

MARCH 10, 2020

Introduction In this article, I’m going to explain what the Execution Plans in SQL Server are and how to understand the details of an execution plan by reading the various metrics available once we hover over the components in the plan. Execution plans SQL Server Management Studio (SSMS

Servers 60

Servers Metrics Availability 60

SQL Shack

APRIL 7, 2020

This article explains the deadlock definition in SQL Server, and it also mentions how to capture deadlock with extended events. Deadlock is a resource contention issue that occurs between two or more than two processes. To handle this problem, we need to clearly understand how it occurs.

Servers 86

Servers Processing Performance 86

SQL Shack

DECEMBER 23, 2019

This article targets the beginners and gives an introduction of the clustered index in SQL Server. Introduction An index plays a crucial role in SQL Server query performance. Indexes Performance SQL Server Management Studio (SSMS

Servers 72

Servers Performance 72

SQL Performance

AUGUST 2, 2019

I have been making the same recommendations about tempdb since I started working with SQL Server over 15 years ago, when I was working with customers running version 2000. From the customer side, this has been the limit of what can be done*, until SQL Server 2019.

Servers 100

Servers C++ Testing Systems 100

SQL Shack

JULY 10, 2019

By removing disk-based storage and the challenge of copying data in and out of memory, query speeds in SQL Server can be improved by orders of magnitude. Migration Performance SQL Server 2019

Servers 99

Servers Latency Storage Speed 99

Scalegrid

DECEMBER 9, 2019

However, discarding a server like this is expensive and inefficient. In this blog post, we will explain an approach to detect and fix transactions on the crashed MySQL master server in a semisynchronous replication setup, and how to re-slave it back into your master-slave setup. Re-Slaving a Crashed #MySQL Master Server in Semisynchronous Replication Setup Click To Tweet. Remember that you need to retain the UUID of this server as before. In a MySQL 5.7

Servers 117

Servers Availability Processing Database 117

SQL Shack

SEPTEMBER 20, 2019

In this article, we will discuss a few very common questions that you may be asked during a SQL Server administrator or developer technical job interview. Q1: What is a SQL Server Execution Plan?

Servers 103

Servers Engineering Development 103

SQL Performance

MARCH 13, 2020

SQL Server 2019 Cumulative Update #3 is available, with 56 enhancements. The post SQL Server 2019 Cumulative Update #3 appeared first on SQLPerformance.com. SQL Server 2019The build number is 15.0.4023.6.

Servers 40

Servers Availability 40

SQL Performance

JANUARY 10, 2020

Earlier this week, Microsoft announced SQL Server 2019 Cumulative Update #1. To update your local Docker image: docker pull mcr.microsoft.com/mssql/server: 2019 -latest. The post SQL Server 2019 Cumulative Update #1 appeared first on SQLPerformance.com.

Servers 52

Servers Testing Processing 52

SQL Performance

FEBRUARY 13, 2020

SQL Server 2019 Cumulative Update #2 is now available, with 134 fixes and improvements. The post SQL Server 2019 Cumulative Update #2 appeared first on SQLPerformance.com. SQL Server 2019Build # is 15.0.4013.40.

Servers 40

Servers Availability 40

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. SQL Server Agent Alerts.

Servers 67

Servers Azure Best Practices Database 67

SQL Shack

APRIL 6, 2020

Table-Valued Parameters aka TVPs are commonly used to pass a table as a parameter into stored procedures or functions. They are helpful in a way, we can use a table as an input to these routines and we can get rid of dealing more complex steps to achieve this process.

Servers 60

Servers Processing Performance 60

SQL Server According to Bob

DECEMBER 18, 2018

SQL Server relies on Forced-Unit-Access (Fua) I/O subsystem capabilities to provide data durability, detailed in the following documents: SQL Server 2000 I/O Basic and SQL Server I/O Basics, Chapter 2. Microsoft SQL Server Database Engine Input/Output Requirements.

Servers 84

Servers Media Cache Storage 84

SQL Shack

MARCH 16, 2020

In this article, we will talk about sp_WhoIsActive stored procedure and how we can use it to monitor currently running activities in SQL Server.

Monitoring 72

Monitoring Database Servers Systems 72

SQL Server According to Bob

SEPTEMBER 9, 2019

The partitioned memory and latch objects protect in-memory structures for short durations and can be sized according to available memory for SQL Server. Bob Dorr – Principal Software Engineer SQL Server

Servers 103

Servers Database Scalability Tuning 103

SQL Shack

AUGUST 19, 2019

SQL Server Query Store is a performance monitoring tool that helps us evaluate the performance of a SQL query in terms of several different performance metrics such as CPU and Memory Consumption, execution time and the I/O cycles consumed by the query.

Monitoring 92

Monitoring Servers Metrics Performance 92

SQL Performance

NOVEMBER 1, 2019

As I embark on my first PASS Summit in a few years, it is hard to contain my excitement about the newest version of SQL Server. I wrote about this in a post entitled, " A Big Deal : SQL Server 2016 Service Pack 1." SQL Server 2019 Enterprise Edition Standard Edition

Servers 52

Servers Availability Database Hardware 52

SQL Shack

AUGUST 21, 2019

Introduction Once we connect to a SQL Server instance, it assigns a unique identification number to each connection. It is the Server Process ID and commonly known as SPID. SPID 1 to 50 is reserved for SQL Server […].

Servers 77

Servers Processing Monitoring 77

SQL Shack

MAY 13, 2019

This article on SQL Server Always On Listeners includes an overview and various connection configurations for specifying MultiSubnetFailover including SSMS, ODBC, ADO.NET, as well as MultiSubnetFailover limitations and how to connect to all IP addresses via RegisterAllProvidersIP.

Servers 68

Servers Availability 68

SQL Shack

DECEMBER 5, 2019

This article discusses the Forwarded Records and its performance issues for heap tables in SQL Server. Heap introduction and performance issues A page of 8KB is the smallest unit of storage in SQL Server. SQL Server stores the data […].

Storage 61

Storage Servers Performance Systems 61

SQL Shack

JANUARY 16, 2020

This article gives an introduction of the non-clustered index in SQL Server using examples. Introduction In a previous article Overview of SQL Server Clustered indexes, we explored the requirement of an index and clustered indexes in SQL Server.

Servers 73

Servers Performance 73

SQL Shack

JULY 18, 2019

In this article, we will review how to set up auto-failover groups in Azure SQL Server and how failover group is different from active geo-replication in Azure.

Azure 84

Azure Servers Database Availability 84

SQL Performance

SEPTEMBER 17, 2019

Many database administrators find themselves having to support instances of SQL Server Reporting Services (SSRS), or at least the backend databases that are required for SSRS. These topics apply to both SQL Server Reporting Services as well as Power BI Report Server.

Tuning 63

Tuning Servers Database Best Practices 63

SQL Shack

FEBRUARY 28, 2020

In this article, we will discuss a number of interview questions that you could be asked about the SQL Server Always On Availability Groups feature when attending an interview for the SQL Server database administrator role.

Availability 66

Availability Database Servers 66

SQL Server According to Bob

APRIL 24, 2018

When I joined Microsoft in 1993, I would embark on a 25 year journey working only on Windows laptops and Windows Server computers. Last October we released SQL Server 2017 including support for Linux and Docker Containers. docker pull microsoft/mssql-server-linux:2017-latest.

Servers 52

Servers Internet Internet Virtualization 52

Dynatrace

FEBRUARY 11, 2020

OneAgent knows where to connect for further runtime configuration and where to send data because the installer itself is pre-configured to connect to the exact tenant and server that it’s downloaded from. And what if you need to migrate OneAgent from one server to another?

Servers 169

Servers Tuning Systems Availability 169

SQL Server According to Bob

FEBRUARY 7, 2020

SQL Server dbcc clonedatabase ​​ - ​​ Gotcha The dbcc clonedatabase is a ​​ handy command to clone metadata and ​​ information such as ​​ query disk store. I have been testing ​​ SQL Server ​​ High Availability failovers ​​ in combination with database creates and drops, including clonedatabase.

Database 43

Database Servers Azure Tuning 43

SQL Server According to Bob

FEBRUARY 10, 2019

Failures occur from remote clients or sqlcmd executed directory on the server (/opt/mssql-tools/bin). SQL Server 2017 CU10 does not show behavior. · SQL Server 2017 CU12 exhibits the behavior. Server is a Superdome with lots of CPUs and RAM.

Servers 52

Servers C++ Network Monitoring 52

SQL Shack

FEBRUARY 12, 2020

This is in continuation of the previous articles How to monitor internal data structures of SQL Server In-Memory database objects and SQL Server In-Memory database internal memory structure monitoring.

Database 67

Database Monitoring Servers Design 67

SQL Shack

JANUARY 13, 2020

Before going through the index design procedure, let us revise the SQL Server index concept. SQL Server index overview SQL index is considered as one of the most important factors in the SQL Server performance […].

Design 68

Design Servers Performance 68

SQL Performance

AUGUST 23, 2019

In traditional row-mode execution plans, SQL Server may introduce a Bitmap operator as part of performing early semi join reduction before a parallel hash or merge join. There have been major improvements since the first appearance of the batch mode execution engine in SQL Server 2012.

Servers 83

Servers Retail Engineering Efficiency 83

SQL Shack

JUNE 25, 2019

It is essential for the DBA to need to ensure the SQL Server database performance. Overview of Default trace in SQL Server Starting from SQL Server 2005, SQL Server captures a few critical events in the default traces. […].

Database 84

Database Tuning Servers Performance 84

SQL Shack

DECEMBER 9, 2019

In this article, we will describe SQL Server Profiler and how it can be used. Introduction SQL Server Profiler is a tracing tool provided by Microsoft since SQL Server 2000 version.

Servers 53

Servers Monitoring 53

SQL Shack

SEPTEMBER 9, 2019

In this article, we will study in detail about the how SQL Server Index Fill factor works. Index Fill factor SQL Server Index Fill Factor is a percentage value to be filled data page with data in SQL Server.

Benchmarking 81

Benchmarking Storage Servers Availability 81

SQL Server According to Bob

FEBRUARY 11, 2019

SQL Server 2017 leverages up to 4 log writer workers, on hidden schedulers, to assist in transaction log processing activities. You may find the number of log write workers has been increased to 8 when running newer releases of SQL Server to accommodate larger systems. During SQL Server startup the number of log writer workers is determined. SQL Server 2017 General How It Works It Just Runs Faster NUMA Performance Scheduler

Servers 40

Servers Availability Software Software 40

SQL Shack

MAY 3, 2019

CPU pressure slowing down the server This article is the sequel in a series about SQL Server monitoring tools and common performance issues.

Monitoring 63

Monitoring Servers Performance 63

SQL Shack

AUGUST 15, 2019

This article explores the usage of TempDB and different ways to shrink the TempDB database in SQL Server Each instance of Microsoft SQL Server has a system database TempDB. It is a backbone for the SQL Server instance.

Database 78

Database Servers Systems Monitoring 78

SQL Server According to Bob

APRIL 4, 2020

SQL Server On Linux: Logger.ini Size and Rollover Additions ​​ to SQL Server 2019 CU4 I can’t take credit for this post as Dylan added the code and provided the write-up to share with you. For SQL Server on Linux, there are ​​ additional logging capabilities. Starting in SQL Server 2019 CU4, when declaring a file output (the first section in the sample logger.ini above), we support the “Maxfilesizemb” and “Maxrolloverfiles” options.

Servers 40

Servers Code 40

SQL Performance

DECEMBER 17, 2019

One initial, easy step to moving your SQL Server on-premises workloads to the cloud is using Azure VMs to run your SQL Server workloads in an infrastructure as a service (IaaS) scenario. The post Azure Virtual Machines for SQL Server Usage appeared first on SQLPerformance.com.

Virtualization 56

Virtualization Azure Servers Storage 56

SQL Server According to Bob

DECEMBER 18, 2018

I was asked to validate the SQL Server behavior in light of the error condition involving fsync/fdatasync outlined in this article. SQL Server does NOT do this, in fact I made sure SQL Server on Linux does not allow this to occur. SQL Server 2017 How It Works SQL Server on Linu

Cache 52

Cache Media Servers Database 52