Powershell error: sqlps.ps1 cannot be loaded because running scripts is disabled on this system

Introduction An interesting issue came across my desk this week. One of our clients has a number of PowerShell tasks ...

MySQL high availability with HAProxy, Consul and Orchestrator

Introduction In this post we will explore one approach to MySQL high availability with HAProxy, Consul and ...

Oracle parallel query hints - part 3: PX_JOIN_FILTER

In part one of this series on Oracle Parallel Query Hints, I looked at PQ_DISTRIBUTE, and part two was about ...

MySQL streaming Xtrabackup to slave recovery

Restoring a MySQL slave by manually taking a backup and then copying the file over the network can be an incredibly ...

Oracle parallel query hints. A reference series part 2: PQ_REPLICATE

The Mechanics of PQ_REPLICATE in Oracle 12.2 In part 1 of this series, we talked about the basic mechanics of the ...

Why is my Forms 12c Application so slow?

After a recent upgrade Users cannot work with the forms application anymore; it has been a few weeks since an upgrade ...

RDP Issue - CredSSP encryption Oracle remediation

Introduction We have recently had some issues accessing a few client servers and found it is related to a Windows ...

An Oracle "oraenv" script solution for Windows with PowerShell

The idea Due to the nature of my consulting work, I mostly work in Linux environments and use bash for scripting. But ...

How to restore encrypted backups

Background SQL Server started having encrypted backups since SQL Server 2014. You can see the technical details here. ...

Data classification with Microsoft SQL Server and Azure SQL DB (GDPR, PII, HIPPA...etc)

This blog post will cover SQL Server on-premise or IaaS and Azure SQL DB and how to classify data in both. Let's start ...

Database migration: how to handle large tables

In the previous blog, we presented a simple database migration approach using Apache Nifi. Following our previous blog, ...

Backing up your MySQL instance physically with Docker

In a previous post, I had mentioned that I was doing a bit of digging into Docker in order to get a better grasp of the ...

Fun with Oracle Data Guard Broker

The beginning So, there we were attending to our jobs and tending to our customers when an emergency alert came in: a ...

Log buffer #548: a carnival of the vanities for DBAs

This log buffer edition covers blog posts from Cloud, Oracle and MySQL.

Backup strategies in Cassandra

Authenticating Vault against LDAP for accessing MySQL through ProxySQL

Earlier this year, I was presented with the challenge of streamlining user access to MySQL, allowing users self-serve ...

Getting started with Orchestrator

Orchestrator is a MySQL high availability and replication management tool. In this blog post, we will cover the first ...

Debugging CBQT OR expansion with 10053 trace

I had been working with a client to add a little bit of functionality to an analytical view that we had been running ...

Cassandra CQL cheatsheet

Context: Every now and then I find myself looking for a couple of commands I do often. In some other ...

HAProxy MySQL lag awareness via systemd

Background In one of the projects I have been working on, one requirement was the ability to stop traffic from reaching ...

BTRFS performance compared to LVM+EXT4 with regards to database workloads

Introduction In many database builds, backups pose a very large problem. Most backup systems require an exclusive table ...

Debugging MySQL on Docker

Problem Statement In a recent post, my colleague and teammate Peter Sylvester explained how we could customize MySQL's ...

Fixing could not start service broker for database

Introduction Blogging is something I love because it gives me a chance to share the ideas I have and the knowledge I ...

Creating dynamic tasks using Apache Airflow

What's Airflow? Apache Airflow is an open source scheduler built on Python. It uses a topological sorting mechanism, ...