Everything our consultants learn while running databases for customers: Oracle, PostgreSQL, SQL Server, MySQL, MariaDB, MongoDB and Delphix. Expect hands-on posts about installation, day-to-day administration, backup and recovery, performance tuning, replication and upgrades.
I’m looking back on three amazing days of interesting technical insights from the SQLBits event 2025 in London. It’s actually my first time having the pleasure of attending one of Europe’s biggest data platform events and I can sincerely say, that I enjoyed every minute of interesting workshops and sessions all around Data management, Data engineering and analytics with the…
Like every time with a new version of SQL Server, it’s good to see what the new configurations possibilities are for us to manage the instance. To do this, I will compare SQL 2022 and SQL 2025 using the system view sys.configurations. I begin with a count(*) to see how many differences I have: 95 configurations for SQL 2022 and…
Microsoft has announced the end of the SQL Server Reporting Services (SSRS) service. In other words, Microsoft will no longer provide new versions of SSRS. Currently, the latest available version is the 2022 version (https://www.microsoft.com/fr-FR/download/details.aspx?id=104502). However, it is important to note that this service will be supported until January 11, 2033. Moreover, it will still be possible to use SSRS…
This week, I’m in London attending the SQLBits 2025 conference.Since joining dbi services as a consultant, this is my second time taking part in the event. The last time was in 2022, but I attended remotely due to the uncertainties surrounding international travel at the time, as COVID-19 was still a concern.You can actually find the blog post I wrote…
DMK is a Database Management Kit that can be used in various database environments. It simplifies command-line tasks for Databases Administrator on Unix and Windows systems. It supports multiple databases including Oracle, MongoDB, MariaDB, and PostgreSQL. It also includes additional modules for automating RMAN backups, database duplication, and database creation.dbi-services recently released version 2.2.0, introducing significant improvements for Oracle databases with RAC/ASM and enhanced support…
This post briefly describes how to use a JSON responseFIle to modify (container) database parameters on Oracle Cloud ExaCC/ExaCS service. What are our options with dbaascli? Well, we can simply go ahead and apply single changes one by one. What a lucky test, we just set a single hidden parameter without any database restart. But hold on, more then 20…
INTRODUCTION S3 storage is the most resilient and available service in AWS: is a trusted service for storing backups over the long term. From a Windows Server machine, in AWS EC2 or elsewhere, the easiest and most reliable way to make a backup from SQL Server: 1- Concept For data that must be available over a long period of time…
Before addressing the issue of backup size reduction with compression enabled, let me provide some context. When SQL Server is hosted on AWS EC2 instances, you’ll need to manage the backup strategy appropriate to your business. In order to persist and archive your SQL Server backups securely and permanently, AWS S3 is a prime target: it’s the service with the…
Well, this blog is unfortunately reserved to DBA folk running Oracle engineered systems #Exadata, #ExaCC, #ExaCS and Oracle Multitenant database (aka. CDB) architecture. One of our #ExaCC customer has a strong DevOps focused business and heavily relies on Exadata sparse clones to quickly provision “lightweight” database clones for their development teams. As part of the move of an mission critical…
SQL Server 2025 preview has been publicly available for a week now: you can find all the details in this blog “SQL Server 2025 Public Preview and SSMS 21 now available“.In this blog, I want to make an highlight on one Engine High Availability (HA) feature: Availability Group Commit Time. For a little background, Always On Availability Group (AG) is…
Backup operations can increase significantly I/O and even CPU utilization when we use backup compression. To avoid using resources on primary replica, offloading backups to a synchronized or synchronizing replicas seems to be the good solution even if we have some limitations.For the time being, supported backups on a secondary replicas are: So we cannot perform: Those limitations may cause…
Introduction SQL Server 2025 introduces a new algorithm for backup compression: ZSTD. As a result, SQL Server 2025 now offers three solutions for backup compression: In this blog, we will compare MS_XPRESS and ZSTD. Environment To perform these tests, the following virtual machine was used: Additionally, I used the StackOverflow database to run the backup tests (reference: https://www.brentozar.com/archive/2015/10/how-to-download-the-stack-overflow-database-via-bittorrent/). ZSTD usage…
