Database Administration & Monitoring

SQL Server 2016 AlwaysOn: Direct seeding and performance considerations

This blog post follows the previous one about new direct seeding feature shipped with SQL Server 2016. As a reminder, I had some doubts about using direct seeding with large databases because log stream is not(…)

Compare source and target in a Dbvisit replication

By Franck Pachot . You've setup a logical replication, and you trust it. But before the target goes into production, it will be safer to compare source and target. At least count the number of rows. But tables are continuously(…)

Script to suggest FK indexes

By Franck Pachot . In Oracle, when the referenced key is deleted (by delete on parent table, or update on the referenced columns) the child tables(s) are locked to prevent any concurrent insert that may reference the old key. This(…)

GoldenGate 12.2 – Installation of the monitoring agent

As described in my last post, GoldenGate Studio requires the monitor agent on each GoldenGate instance. The goal of this agent is to allow GoldenGate Studio to interact with GoldenGate, for example, to(…)

SQL Server 2016: Always Encrypted – part 2

In my last blog post about SQL Server 2016 Always Encrypted, here, I showed how to use this new functionality but also that you have to separate the different execution context with an Application server, a database server and(…)

PostgreSQL as a central reporting hub? – Yes, of course

For every client we do projects for there usually are database systems from various vendors. In most places you at least find some Oracle and MS SQL Server databases. Probably somewhere there are even some MySQL/MariaDB or PostgreSQL instance running.

Statspack Idle Events

By Franck Pachot . When you don't have Enterprise Edition + Diagnostic Pack, you cannot use AWR but you can, and should, install Statspack. Statspack is still there, but unfortunately do not evolve a lot. The most important section, the(…)

SQL Server 2016 – Query Store: retrieve query that doesn’t appear!

For our event SQL Server 2016 in September, I am studying the new functionality Query Store. My colleague David Barbarin have written few months ago about Query(…)

Swiss PGDAY 2016, Slides are online

Last Friday the Swiss PGDAY happened in Rapperswil. All the slides as well as some pictures are now availble (tab “Programm”): >(…)

Manage DDL inside SharePlex

By Mouhamadou Diaw In a precedent blog (http://dbi-services.com/blog/discovering-shareplex-for-oracle/) about SharePlex, we presented how to setup a replication between 2 environments. In this article we will try to see how SharePlex deals with replicating DDL statements. Before starting we(…)