Performance

Troubleshooting performance on Autonomous Database

By Franck Pachot . On my Oracle Cloud Free Tier Autonomous Transaction Processing service, a database that can be used for free with no time limit, I have seen this strange activity. As I’m running nothing(…)

Make Oracle database simple again!

Introduction Let’s have a look at how to make Oracle database as simple as it was before. Oracle database is a great piece of software, yes it’s quite expensive, but it’s still the reference and most of the companies can(…)

Introducing Accelerated Database Recovery with SQL Server 2019

SQL Server 2019 RC1 was released out a few weeks ago and it is time to start blogging about my favorite core engine features that will be shipped with the next version of SQL Server. Things should not be completely(…)

Huawei Dorado 6000 V3 benchmark

I had the opportunity to test the new Dorada 6000 V3 All-Flash storage system. See what the all-new Dorado 6000 V3 All-Flash Storage system is capable as storage for your database system.

SQL Server containers and docker network driver performance considerations

Few months ago I attended to the Franck Pachot session about Microservices and databases at SOUG Romandie in Lausanne on 2019 May 21th. He covered some performance challenges that can be introduced by Microservices architecture design(…)

RCSI with foreign keys, NULL values and paramater sniffing behavior

In this blog post let’s go back to the roots (DBA concern) with a discussion with one of my friends about a weird transaction locking issue. In fact, this discussion was specifically around two questions. The(…)

When you change the UNDO_RETENTION parameter, the LOB segment’s retention value is not modified

Below, I will try to explain, a particular case for the general error : ORA-01555 snapshot too old error.. Normally, when we have this error, we are trying to adapt the retention parameters or to tune our queries. SQL> show(…)

Lighty for PostgreSQL

By Franck Pachot . If you follow this blog, you should know how I like Orachrome Lighty for Oracle, for its efficiency to monitor database performance statistics. Today Orachrome released the beta version of Lighty for Postgres:(…)

SQL Server 2017: Can I run a “standard” rebuild on the index after a Resumable Online Index Rebuild is suspended?

This article is an additional article to my precedent about “SQL Server 2017: What’s happens with an interruption during a Resumable Online Index Rebuild?”(…)

SQL Server 2017: What’s happens with an interruption during a Resumable Online Index Rebuild?

Last week, I presented this option in our internal event, the dbi xChange. My colleague David Barbarin asked me this question, what’s append if an interruption occurs (reboot, SQL Server service stopped,…) during a Resumable(…)