Infrastructure at your Service

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Database Administration & Monitoring

Daniel Westermann

pg_auto_failover: Setup and installation

By | Database Administration & Monitoring | No Comments

When I attended PGIBZ 2019 earlier this year, I talked with Dimitri about pg_auto_failover and I promised to have a look at it. Well, almost half a year later and after we’ve met again at pgconf.eu it is time to actually do that. You probably already know that citudata was acquired by Microsoft earlier this year and that Microsoft seems to be committed to open source since a few years. pg_auto_failover is one of the…

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Jérôme Witt

MariaDB 10.3.1x + 10.4.x : mysqld_multi not working properly

By | Database Administration & Monitoring, MariaDB | No Comments

A couple of days ago, we upgraded some MariaDB instances on a consolidated database server. However, after the software update we were not able to manage our instances anymore using mysqld_multi whatever the MariaDB release (10.3.18 or the latest 10.4.x). Previously, everything worked fine with 10.3.14. So, what happened to our system?

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Daniel Westermann

PostgreSQL 13 will come with partitioning support for pgbench

By | Database Administration & Monitoring | No Comments

A lot of people use pgbench to benchmark a PostgreSQL instance and pgbench is also heavily used by the PostgreSQL developers. While declarative partitioning was introduced in PostgreSQL 10 there was no support for that in pgbench, even in the current version, which is PostgreSQL 12. With PostgreSQL 13, which is currently in development, this will change and pgbench will be able to create a partitioned pgbench_accounts tables you then can run your benchmark against.

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Marc Wagner

Adding a dbvisit standby database on the ODA in a non-OMF environment

By | Database Administration & Monitoring | No Comments

I have recently been working on a customer project where I had been challenged adding a dbvisit standby database on an ODA X7-2M, named ODA03. The existing customer environment was composed of Oracle Standard 12.2 version database. The primary database, myDB, is running on server named srv02 and using a non-OMF configuration. On the ODA side we are working with OMF configuration. The dbvisit version available at that time was version 8. You need to…

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Marc Wagner

Having multiple standby databases and cascading with dbvisit

By | Database Administration & Monitoring | No Comments

Dbvisit standy is a disaster recovery solution that you will be able to use with Oracle standard edition. I have been working on a customer project where I had to setup a system having one primary and two standby databases. One of the standby database had to run with a gap of 24 hours. Knowing that flashback possibilities are very limited on standard edition, this would give customer the ability to extract and restore some…

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Marc Wagner

Connecting to ODA derby database

By | Database Administration & Monitoring | No Comments

ODA light (ODA X7-2S, X7-2M, X8-2S, X8-2M) come with an internal derby database to manage ODA metadata. From time to time, there is a need to check or update some information within it, as for example when facing database deletion issue. I would like to strongly advise that updating manually the ODA repository should only be done after getting Oracle support guidance and agreement to do so. Neither the author (that’s me 🙂 ) nor…

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