Blog | Pythian | Database (16)

Featured blog posts

Microsoft SQL Server

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 ...

MySQL

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

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, ...

MySQL

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

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 ...

Oracle

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 ...

Oracle

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 ...

MongoDB

Priority in MongoDB replica sets

I had interesting use case with a MongoDB replica set I'd like to share. When the replica set ...

Oracle

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 ...

Microsoft SQL Server

How to restore encrypted backups

Background

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

Microsoft Azure

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 ...

Cassandra

Kong: an intro to API gateways

Introduction

While working on a few tasks in the past few weeks, I faced a problem that involved setting a ...

Oracle

Database migration: how to handle large tables

In the previous blog, we presented a simple

Cassandra

How to migrate data from Cassandra to Elassandra in Docker containers

A client recently asked us to migrate a Cassandra cluster running in Docker containers to Elassandra, with the data ...

MySQL

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 ...

Oracle

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 ...

MySQL

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

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

Cassandra

Backup strategies in Cassandra

MySQL

Authenticating Vault against LDAP for accessing MySQL through ProxySQL

Earlier this year, I was presented with the challenge of streamlining user access to ...

Cassandra

Cassandra information using nodetool

Cassandra nodetool provides several types of commands to manage your Cassandra ...

MySQL

Getting started with Orchestrator

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

Microsoft SQL Server

Linux file system for SQL Server DBAs

Intro

With Microsoft releasing SQL Server on Linux and a lot of SQL Server DBAs coming from a predominantly ...

Oracle

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

Cassandra CQL cheatsheet

Context:

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

Cassandra

Cassandra backups using nodetool

Cassandra nodetool provides several types of commands to manage your Cassandra cluster. See my previous posts for an

MySQL

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 ...

Database

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

Introduction

In many database builds, backups pose ...

MySQL

Debugging MySQL on Docker

Problem Statement

In a recent

Database

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 ...

Oracle

Creating dynamic tasks using Apache Airflow

What's Airflow?

Apache Airflow is an open source scheduler built on Python. It uses a topological sorting ...

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Oracle AI Data Platform (AIDP): No-Nonsense Platform Overview

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Google Workspace

AI in the Workplace: Employee Productivity & Sentiment Survey

2025 employee survey on the use of AI In November 2025, Pythian, a professional services ...

Google Workspace

Is Agentspace good for non-Google shops?

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Analytics related blog posts

Analytics

Using Multi-Agent Reasoning for NLP-to-SQL

As data-driven decision-making becomes essential, access to that data shouldn’t require deep technical ...

Analytics

Becky's BI Apps Corner: OBIA 11.1.1.10.2

Upgrade jitters? If you’re running older versions of OBIA, the new 11.1.1.10.2 release brings game-changing features like automatic error handling and ...

Analytics

Oracle Data Integrator (aka Sunopsis) Now On OTN

Oracle Data Integrator (formerly Sunopsis) has officially landed on the Oracle Technology Network, bringing

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Featured blog posts

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

Introduction

MySQL high availability with HAProxy, Consul and Orchestrator

Introduction

Oracle parallel query hints - part 3: PX_JOIN_FILTER

MySQL streaming Xtrabackup to slave recovery

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

The Mechanics of PQ_REPLICATE in Oracle 12.2

Why is my Forms 12c Application so slow?

After a recent upgrade

RDP Issue - CredSSP encryption Oracle remediation

Introduction

Priority in MongoDB replica sets

An Oracle "oraenv" script solution for Windows with PowerShell

The idea

How to restore encrypted backups

Background

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

Kong: an intro to API gateways

Introduction

Database migration: how to handle large tables

How to migrate data from Cassandra to Elassandra in Docker containers

Backing up your MySQL instance physically with Docker

Fun with Oracle Data Guard Broker

The beginning

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

Backup strategies in Cassandra

Authenticating Vault against LDAP for accessing MySQL through ProxySQL

Cassandra information using nodetool

Getting started with Orchestrator

Linux file system for SQL Server DBAs

Intro

Debugging CBQT OR expansion with 10053 trace

Cassandra CQL cheatsheet

Context:

Cassandra backups using nodetool

HAProxy MySQL lag awareness via systemd

Background

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

Introduction

Debugging MySQL on Docker

Problem Statement

Fixing could not start service broker for database

Introduction

Creating dynamic tasks using Apache Airflow

What's Airflow?

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