Percona

DECEMBER 7, 2023

Ensuring the security and resilience of your data hinges on having a robust backup strategy, and Percona XtraBackup (PXB), our open source backup solution for all versions of MySQL, is designed to make backups a seamless procedure without disrupting the performance of your server in a production environment. Percona XtraBackup 8.1

C++ 90

C++ Open Source Servers Database 90

Percona

SEPTEMBER 29, 2023

This is a global and dynamic variable, and we can set this mode when the server is running. sec) If you try to connect the DB with app_user when offline_mode=1 , it will not allow the connections and get an error message that the server is currently in offline mode. But by using this mode, we can avoid the new connections.

C++ 92

C++ Servers Open Source Database 92

Scalegrid

JANUARY 19, 2024

Recovering from a MongoDB rollback involves locating rollback files, using mongorestore to load data into a separate server, cleansing unneeded data, and importing the data back into the primary cluster, coupled with ongoing monitoring and maintenance of replica sets to maintain system health.

Database 130

Database Network Servers Monitoring 130

Percona

JULY 19, 2023

Well, “easy” if you know just a tiny bit of C++. Our function will implement a ULID generator using a C++ library from ChrisBove/ulid. Creating the build environment The first step is downloading the source code to MySQL / Percona Server for MySQL 8.0.32 , then extracting the tarball. $ Plugin compiled.

C++ 79

C++ Servers Benchmarking Best Practices 79

Scalegrid

JUNE 18, 2019

In this blog, we’ll show you how to connect to a MongoDB server configured with self-signed certificates for SSL using both the Ruby MongoDB driver and the popular Object-Document-Mapper (ODM) mongoid. Our yml file: development: # Configure available database clients. The user's database roles. The user's database roles.

C++ 100

C++ Servers Database Network 100

Percona

DECEMBER 5, 2022

The need to audit who is using a database and their activities is crucial in many environments. This functionality is available in the free, open source Audit Plugin that is included in Percona Server for MySQL. The prerequisite for installing Percona’s Audit Log Plugin is to first install Percona Server for MySQL.

Open Source 66

Open Source C++ Servers Database 66

Percona

NOVEMBER 9, 2023

With this data, we’ll be able to better understand and tune our Postgres servers. The main idea is to be able to easily detect what the server is doing at any point in time so we can better understand how it reacts to the workload and tune accordingly. Download Percona Monitoring and Management Today

Monitoring 87

Monitoring Tuning Metrics Servers 87

SQL Server According to Bob

APRIL 24, 2018

I also started my career developing on UNIX systems with C++ and databases like Ingres. 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.

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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

Percona

OCTOBER 2, 2023

Percona Toolkit is a collection of advanced open source command-line tools, developed and used by the Percona technical staff, that are engineered to perform a variety of MySQL, MariaDB, MongoDB, and PostgreSQL server and system tasks that are too difficult or complex to perform manually. And did I mention they are open source?! virtual = 2.2G

Cache 96

Cache Database Virtualization Servers 96

SQL Performance

MAY 11, 2022

In my examples, I’ll use the sample database PerformanceV5. You can download the source code to create and populate this database here. I ran all the examples on SQL Server ® 2019 Developer, where batch-mode on rowstore is available. Environment for Demos. So, why does the plan have four sorts? Figure 3: Plan for Query 3.

C++ 133

C++ Database Servers Code 133

SQL Performance

JULY 27, 2021

Continuing my series of articles on latches, this time I’m going to discuss the DBCC_OBJECT_METADATA latch and show how it can be a major bottleneck for consistency checks prior to SQL Server 2016 under certain circumstances. But remember, this bottleneck only happens for versions of SQL Server earlier than SQL Server 2016.

C++ 54

C++ Servers Database Code 54

Percona

APRIL 17, 2023

Still, as DBA, you want to use Percona Monitoring and Management (PMM) for better database insights and maintain a common policy of Datadog as a standard alerting or high-level observability tool. We’ll use here “up” metrics for different databases to reflect database status. 1 Complete!

Monitoring 69

Monitoring Metrics Database Open Source 69

HammerDB

NOVEMBER 22, 2021

HammerDB included a graphical performance metrics view for the Oracle database only. HammerDB includes the same functionality for PostgreSQL enabling the user to drill down on database metrics in real time. usr/bin/install -c -m 644./pg_stat_statements--1.4.sql./pg_stat_statements--1.8--1.9.sql./pg_stat_statements--1.7--1.8.sql./pg_stat_statements--1.6--1.7.sql./pg_stat_statements--1.5--1.6.sql./pg_stat_statements--1.4--1.5.sql.

Metrics 62

Metrics Benchmarking C++ Database 62

O'Reilly

DECEMBER 12, 2023

OpenAI won’t give him the GPT models, but he can download the model for Meta’s Llama-2 and have at it.) It may not be possible if you use a generative model configured as a chat server by itself. The simple RAG pattern, with one prompt orchestrator, one content database, and one language model, will no doubt become more complex.

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Artificial Intelligence Media Google Processing 100

Percona

MAY 2, 2023

That’s why it’s essential to implement the best practices and strategies for MongoDB database backups. Why are MongoDB database backups important? Regular database backups are essential to protect against data loss caused by system failures, human errors, natural disasters, or cyber-attacks.

Best Practices 52

Best Practices Database Storage Servers 52

Percona

APRIL 3, 2023

SET WITHOUT OIDS; A list of tables with the problem is in the file: tables_with_oids.txt Failure, exiting postgres@xx.xx.xx.xx:~$ more tables_with_oids.txt In database: abs_test public.craft public.ports In database: postgres public.oid_test We can use the below SQL to find tables with OID, and it also generates the DDL to remove.

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C++ Database Cache Storage 98

HammerDB

MAY 26, 2022

HammerDB already provides pre-compiled packages from the download page so if you want to run HammerDB without building it then these packages are all you need. You may want to become familiar with all the underlying source code in C or wish to build a distribution where you can verify every single line of source code that goes into HammerDB.

C++ 113

C++ Database Open Source Servers 113

Percona

DECEMBER 15, 2023

A database role can have a number of attributes that define its privileges and interact with the client authentication system.One such attribute is the CREATEROLE attribute, which is important to PostgreSQL database management of users and roles.

C++ 90

C++ Database Open Source Systems 90

Percona

DECEMBER 29, 2023

Not everything can be addressed on the database side. These connections can accumulate, eventually exhausting server resources and causing the system to become unresponsive. Human factor: In an ideal case, there must be stringent restrictions and enforcement on what load and number of connections can be onboarded to the Database.

Servers 78

Servers Database C++ Airlines 78

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. Be sure to deploy SQL Server 2017 CU6 or newer for best data durability and performance results. “. The Back Story.

Servers 90

Servers Media Cache Storage 90

Percona

MAY 8, 2023

In simpler terms, logical replication in PostgreSQL is a way to copy data from one database to another in a more flexible and customizable manner compared to physical replication. Instead of copying the entire database, logical replication focuses on replicating changes made to individual rows or transactions. 12 Replica1 10.0.0.80

C++ 96

C++ Servers Database Open Source 96

Percona

DECEMBER 5, 2023

Inspired by David’s insights, I embarked on a journey to explore logical replication from a different perspective – within the realm of on-premises server databases. Also, it is a helpful method for version upgrades since the target database can run on a different (minor or major) PostgreSQL version.

Database 75

Database Traffic C++ Servers 75

HammerDB

JUNE 27, 2022

HammerDB is a software application for database benchmarking. It enables the user to measure database performance and make comparative judgements about database hardware and software. Databases are highly sophisticated software, and to design and run a fair benchmark workload is a complex undertaking. The HammerDB name.

Benchmarking 62

Benchmarking Open Source C++ Cache 62

Percona

JUNE 26, 2023

We have faced different levels of corruption related to databases in PostgreSQL. In case of hardware failure, first, we need to fix the hardware issue or migrate our database to new hardware and then perform a restore, as mentioned below. Perform PITR if we have backup configured with proper archive backup.

Hardware 74

Hardware C++ Database Open Source 74

Percona

AUGUST 30, 2023

This can be changed later using the pg_checksums utility, but that will be a painful exercise on a big database. The most common parameter used by the PostgreSQL server (postmaster) will be PGDATA, which sets the parameter data_directory. But changing this is possible only at the server startup. 20150623 (Red Hat 4.8.5-44),

Database 98

Database Servers Open Source Tuning 98

Percona

AUGUST 18, 2023

Why do you need multiple instances on the same server? Why not just create another database on the same instance? You can have a host with two or three instances configured as a delayed replica of the source server with SQL Delay of, let’s say, 24hr, 12hr, and 6/3hrs. ln -s /usr/local/Percona-Server-8.0.19-10-Linux.x86_64.ssl101/

Programming 83

Programming Servers Database Hardware 83

Percona

JUNE 5, 2023

Sooner or later, one must address this issue; otherwise, one can suffer the consequences of handicapping your entire database infrastructure. The problem is you either don’t or can’t refactor your application servers; something, maybe, about not having enough time in the day. Note that the md5 hashed password is pgbouncer.

Database 120

Database Open Source Servers C++ 120

Percona

MARCH 27, 2023

You might wonder why this error will come during PITR as the operations in the Oplog are idempotent, meaning they always result in the same change to the database no matter how many times they’re performed. limit(1) { "op" : "c", "ns" : "london.$cmd", I created a collection book with four documents with a unique compound index.

Games 92

Games Database Open Source C++ 92

Percona

AUGUST 21, 2023

While trying to be as complete yet succinct as possible, I’m detailing how to enable TLS between a PostgreSQL and the OpenLDAP server. Username accounts, but not passwords, are created on the Postgres server. Both username accounts and passwords are configured on the LDAP server. 0 ldap ldapserver=127.0.0.1

C++ 69

C++ Servers Open Source Testing 69

HammerDB

DECEMBER 14, 2022

The TPC publishes an official Docker image on Docker Hub to enable the rapid deployment and testing of databases with HammerDB. This image includes example scripts to build schemas and test your databases with a single command. hammerdb>librarycheck Checking database library for Oracle Success. Database Configuration.

C++ 62

C++ Virtualization Database Benchmarking 62

Percona

DECEMBER 19, 2023

The simplest way to run it for testing is to use the docker container: docker run --name pg-tde -e POSTGRES_PASSWORD=mysecretpassword -d perconalab/postgres-tde-ext This command starts a container with the extension loaded and already enabled for the Postgres database. Download Percona Distribution for PostgreSQL Today!

Open Source 80

Open Source Storage Database C++ 80

Percona

DECEMBER 14, 2022

In the database world there are essentially two types of database operations: Online Transaction Processing , OLTP : Online transaction processing applications have high throughput and are insert- or update-intensive in database management. GOOD-NEWS: The CITUS extension is available on the Citus Data download page.

Database 91

Database Analytics Storage Processing 91

Smashing Magazine

JULY 16, 2019

Web scraping is a way to grab data from websites without needing access to APIs or the website’s database. A few caveats before we begin: Data scraping involves increasing the server load for the site that you’re scraping, which means a higher cost for the companies hosting the site and a lower quality experience for other users of that site.

Scalability 87

Scalability Website C++ Servers 87

SQL Server According to Bob

JANUARY 11, 2020

Microsoft, ​​ Windows, ​​ Windows NT, ​​ and Windows Server ​​ are registered trademarks of Microsoft Corporation in the United States and/or other countries. The names of actual companies and products mentioned herein may be the trademarks of their respective owners.

Servers 40

Servers Cache Database Media 40

Percona

OCTOBER 17, 2023

When multiple operations, such as reads and writes, attempt to access the database concurrently, WiredTiger uses tickets to ensure these operations do not conflict in a way that would compromise data integrity or performance. Bounce the database, replacing the binaries with the older release. Remove backward-incompatible features.

Metrics 97

Metrics C++ Storage Database 97

Percona

FEBRUARY 23, 2023

If you ever had to make a quick ad-hoc backup of your MongoDB databases, but there was not enough disk space on the local disk to do so, this blog post may provide some handy tips to save you from headaches. while not overloading the CPU capacity on the production database. Therefore, applying on-the-fly compression is essential.

AWS 118

AWS Storage Database Open Source 118