Database Administration & Monitoring

AWS – RDS – SQL Server Native backups

Introduction RDS provide automatic backup feature. This feature will backup the entire RDS instance. As a DBA sometimes you need to backup individual database, they are many reason for that (legal, migration, replication,…). Unfortunately individual database backups are not available(…)

Oracle 18c – select from a flat file

By Franck Pachot . This post is the first one from a series of small examples on recent Oracle features. My goal is to present them to people outside of Oracle and relational databases usage, maybe some NoSQL players.

Introduction to Azure SQL Database Auto-failover groups

SQL Azure Database by default offers a 99.99% availability SLA across all its service tiers. This means that for any database, the downtime should not exceed 52 minutes per year. Using Zone redundancy increases availability to 99.995% which is(…)

How to create an Azure SQL Database using Azure PowerShell

In this blog post, I’ll go through the steps to create an Azure SQL Database using Azure PowerShell. Introduction to Azure SQL Database The SQL database services provided by Microsoft on the cloud are now grouped under the(…)

Oracle 20c : Create a Far Sync Instance Is Now Easy

By Mouhamadou Diaw A far sync instance is like a standby instance as it can receive redo from the primary database and can ship that redo to other members of the Data Guard configuration. But unlike a physical standby instance,(…)

Patching Oracle Database Appliance From 18.8 to 19.6

By Mouhamadou Diaw The ODA software 19.6 is released and people are starting to patch. A direct patch to version 19.6 is possible from version 18.8. Before patching your deployment to Oracle Database Appliance release 19.6, you must(…)

pgBackRest – a simple privileges-related issue

I recently had to replace Barman by pgBackRest as Backup & Recovery solution for one of my customer. The purpose of this blog is not to show how I made the setup (some(…)

Dbvisit – Switchover failing with ORA-00600 error due to Unified Auditing been enabled

I have been recently deploying dbvisit version 9.0.10 on Standard Edition SE2 18.7. Graceful switchover failed with error : ORA-00600: Interner Fehlercode, Argumente: [17090], [], [], [], [], [], [], [], [], [],[], [] (DBD ERROR: OCIStmtExecute)(…)

Applying archive log on a standby is failing with error ORA-00756: recovery detected a lost write of a data block

During one last ODA project, I was deploying dbvisit software version 9.0.10 on Oracle database SE Edition version 18.7. From time to time I was getting lost write of a data block with type KTU UNDO on the standby. Through(…)

Error getting repository data for ol6_x86_64_userspace_ksplice, repository not found

During ODA deployment I could see that starting 18.7, immediately after reimaging or patching the ODA, I was getting some regular errors in the root mail box. The error message came every hour at 13 minutes and 43 minutes.