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[Solved] ERROR 1040: Too many connections - How to fix MySQL Too many...
Error Message:ERROR 1040 (HY000): Too many connectionsMySQL Too many connectionsReason for this error:This error occurs when connection reaches the maximum limit as defined in the configuration file....
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[Solved] Can’t connect to MySQL Server
There are a lot of different reasons behind this error. Sometime, you may not see the exact issue on the error message. You have to dig deeper to identify the exact cause. It may take a lot of time and...
View ArticleHow to store IP (internet protocol) address in MySQL?
Internet Protocol address is a special kind of data. This data does not correspond directly to available MySQL built-in data types. I have seen in many servers, the IP(Internet Protocol) address is...
View ArticleUnderstanding MySQL innodb_flush_log_at_trx_commit variable
The main objective of this post is to understand why innodb_fush_log_at_trx_commit variable is used? What are the applicable values for innodb_fush_log_at_trx_commit? How innodb_fush_log_at_trx_commit...
View ArticleDeleting huge number of records in MySQL
This is a short post about DELETE data from huge table in MySQL. Most of us experienced, deleting huge record from MySQL tables taking long time, sometimes hours to complete deleting millions of...
View ArticleHow to find database and table size in MySQL?
As a Database Administrator(DBA), your job want you to know the most atomic details of databases in your server. It happens for me many times, my boss/ delivery manager asking me, what is the size of a...
View ArticleHow to set up MySQL InnoDB Cluster? Part One
This post is about setting up MySQL InnoDB Cluster with 5 nodes on a sandbox deployment. Here, we focus on implementation part, the core concepts will be explained in separate...
View Article[Solved] Unable to start SQL Server Service after applying service pack...
Problem:SQL Server service not starting after service pack / cumulative update installation.Error Message:Script level upgrade for database 'master' failed because upgrade step 'ISServer_upgrade.sql'...
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[Solved] How to install MySQL Server on CentOS 7?
Recently, when I am working on setting up MySQL Enterprise Server, I found, there is too much information available over internet and it was very difficult for a newbie to get what is needed for direct...
View ArticleMySQL Replication Notes
The MySQL Replication was my first project as a Database Administrator (DBA) and I have been working with Replication technologies for last few years and I am indebted to contribute my little part for...
View Article[Solved] MySQL User Operation - ERROR 1396 (HY000): Operation CREATE / DROP...
Error Message: ERROR 1396 (HY000): Operation CREATE USER failed for 'admin'@'%'Generic Error Message:Operation %s failed for %sError Scenario:Operation CREATE USER failedOperation DROP USER...
View ArticleArchitecting reliable backup and recovery strategy
I have been managing multiple databases, mostly in Microsoft SQL Server and MySQL server, both on on-premise and cloud. We have faced a lot of challenging issues such as records deleted from a user...
View ArticleHow to configure Read-Only routing on SQL Server 2016 Always On Availability...
The great advantage of Always On Availability Group over other availability solutions is their ability to scale-out read operations (SELECT queries). Read-only routing is a feature of Always On...
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Understanding and configuring Windows Server Failover Cluster Quorum for SQL...
What is quorum?SQL Server availability solutions such as Always On Availability Group (AG) and Failover Cluster Instance (FCI) depends on Windows Server Failover Cluster (WSFC) for high availability...
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Step by step guide to add SSISDB to SQL Server 2016 Always On Availability...
Starting from SQL Server 2016, you can add SSISDB as Availability Database in Always On Availability Group (AG). This enables high availability and automated failover for SSISDB. This article provides...
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SQL Server Always On Availability Group (AG) Listener: step by step guide
Availability databases hosted on SQL Server Always On Availability Group (AG) can be connected using a unique Virtual Network Name (VNN) called Availability Group Listener. When Availability Group is...
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Face Recognition - Computing Euclidean distance in PostgreSQL
In this article, we are going to discuss about implementing Euclidean distance in PostgreSQL database. Before getting into actual implementation, let me give you a quick background to understand the...
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Real-time Monitoring and Log Streaming in Google Cloud Platform (GCP)
Monitoring Dashboard with charts - credit pixabay Getting insights into performance, availability and health status of infrastructure and application is very critical for building and managing reliable...
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Installing and configuring Docker Engine and Docker Compose on CentOS
Installing & Configuring Docker Engine & Docker-compose on CentOS. Source: pixabay I have written this post as a quick reference guide for installing and configuring Docker Engine and Docker...
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Streaming Analytics in Google Cloud Platform (GCP) - Introduction
Streaming Analytics in Google Cloud Platform (image source - pixabay) From data-to-decision in real-time Welcome to our new series on building a streaming analytics system in the Google Cloud...
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