Database Administration & Monitoring

pg_basebackup and redirecting progress messages to a file

Recently I came over that commit and wondered what that is about. The answer is quite simple but I didn't know that this issue existed. Basically it is about how progress messages are written to screen and(…)

PostgreSQL 11: Procedures and transaction control

Up to PostgreSQL 10 it was not possible to create procedures in PostgreSQL. Of course you can create functions which do not return anything but the possibility to create a procedure was not there. That will probably change in PostgreSQL(…)

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(…)

Finally you will be able to use exit and quit in psql

When giving the PostgreSQL DBA Essentials workshop one of the main issues people have is how they can exit psql. Even on stackoverflow this is a popular topic. The good news(…)

Automatic Block Media Recovery in a DataGuard

By Mouhamadou Diaw With Oracle 12.2, in a Data Guard environment corrupted data blocks can be automatically replaced with uncorrupted copies of those blocks. There are just some requirements: • The physical standby database must be operating in(…)

Connect-times to the DB suddenly become very slow using sqlcl

I recently wrote a couple of sql-scripts which had to run on all of my customer’s DBs. The sql-scripts had to be started from a Linux-client, which does not have any Oracle client software installed. So I thought of using(…)

Parallel pg_dump is slow by default?

Short answer: Yes, it is. Being at a customer the last days we wanted to parallel pg_dump a 2TB database. We were quite surprised that it was quite slow and it was not immediately clear why it was. Well, the(…)

MySQL – Foreign keys and “Cannot delete or update a parent row: a foreign key constraint fails” error

As you know, foreign keys establish a sort of relationship between 2 tables. MySQL requires InnoDB storage engine to support foreign keys. In our example, we have the following parent table in a MySQL 5.7.21 server: mysqld3-(root@localhost) [sakila]> show create(…)

EDB Failover Manager 3.0 and PostgreSQL 10.1

By Mouhamadou Diaw Edb Failover Manager edb-efm30 is now released and supports PostgreSQL 10.1. Efm is an EDB tool which can be used to perform a switchover and a failover in a PostgreSQL standby environment. In this blog(…)