Blog | Pythian (22)

Database

How to Set Up REPMGR with WITNESS for PostgreSQL 10

This blog post will go over how to set up and implement repmgr which is the PostgreSQL application to manage ...

Oracle

Using rsync to Copy GoldenGate Trails from DBFS to ACFS

It sounds like you're putting ACFS through its paces before making the big jump. Testing for IO sustainability is a ...

Oracle

How to Upgrade Grid Infrastructure to 18c

Now that Oracle Grid Infrastructure (GI) 19c has been released, it is time to upgrade your GI to 18c! I am presenting ...

Oracle

Why It's Good Practice to Run Datapatch -prereq after Creating Database

Starting with Oracle 12c, running datapatch may be required after creating a database, depending on the version and the ...

MySQL

How to fix error when MySQL client fails to load SQL file with Blob data

In one of my latest database restore jobs, I was helping a MySQL client with issues related to mysqlbinlog and I wanted ...

Database

Working with Ansible, PostgreSQL and Docker

While working on creating some of our internal training labs for PostgreSQL, I have had the pleasure of working with ...

MySQL

ProxySQL configuration file & startup process explained

When learning ProxySQL, we have seen some confusion around the configuration and especially around the usage of the ...

Oracle

How To Resize Oracle ACFS Volume

There may be many reasons as to why Oracle ACFS volume would need to be resized. Current Filesystem for ACFS is 299G.

MySQL

How to Test MySQL Server Hostname with ProxySQL Multiplexing

Overview While working on a MySQL Galera cluster with ProxySQL, I was in the process of testing traffic going to the ...

MySQL

How to solve SELinux and MySQL log rotation issue

Disable SELinux? Think again! SELinux is always a complicated topic. If you search this on the web, most people will ...

Analytics

How the England and Wales Cricket Board scored with big data

The England and Wales Cricket Board governs every aspect of the sport in those two countries, and it holds massive ...

Cloud

Can you run Hadoop in the cloud?

As a solutions architect at Pythian, I often get questions from clients about the many solutions available to them to ...

Oracle

How to Reduce Exadata Core Count

During preparation for a client's datacenter migration, we decided to move services one-by-one to the datacenter / ...

Oracle

How to delete an RAC Database Using DBCA silent mode

During a recent Proof of Concept (POC) involving the migration of a RAC non-CDB to a CDB, I ran into a few snags that ...

MySQL

An overview of best practices for implementing ML systems - Part 1

In this series of blog posts, we will recommend some best practices identified from our own failures and successes ...

Oracle

How to work around OMS 12.1.0.3 error: Metric evaluation error start – Get dynamic property error

Background Have you received this error on OMS 12.1.0.3? "Metric evaluation error start – Get dynamic property error," ...

Oracle

Minimal Networking Knowledge Recommended for DBAs

In a recent post, I summarized what I consider to be the minimal topics one should be familiar with in order to do ...

Microsoft SQL Server

How to Fix: The Selected Subscriber does not satisfy the minimum version compatibility

Problem: You are trying to add a new subscriber to a SQL Server Publication using the SQL Server Management Studio and ...

Oracle

How To Reclaim ASM Disks

The project I have been working on is migrating GoldenGate trails from DBFS and ACFS. Now that the migration has ...

Oracle

How to extend the /u01 filesystem on an Exadata

Marketers are very good at selling everyone on the fact that resources (CPU, disks, memory) are now infinite, which is ...

Oracle

How to Prevent Linux 7 Housekeeping from Breaking Oracle

Linux 7 introduced multiple changes and enhancements to the kernel. Among them was automated housekeeping for temporary ...

Oracle

How To Delete MGMTDB and MGMTLSNR Using emcli

It sounds like you’ve run into one of those classic Oracle "features" where the system is a little too helpful for its ...

Oracle

How to mine an RMAN Log

I recently performed a Proof of Concept (POC) to compare and contrast Oracle Recovery Manager (RMAN) backup performance ...

Oracle

How to manage Oracle Flashback Log size

Here we will learn how to manage the size of flashback logs generated in our environment. This is useful especially ...

Oracle

How to install 18c Grid Infrastructure in Silent Mode on Linux 7

This blog post will show you how to install 18c Grid and upgrade to 18.6.0.0. 1. Download the 18c binairy and Apr, 2019 ...

Oracle

Exadata: 7 Useful Commands to check Port/Sensor Alarms

Some days ago I was checking for the alarm below, with a very generic message: Message=The aggregate sensor ...

Cassandra

Examining the lifecycle of tombstones in Apache Cassandra

This post is the first part of a series of blog posts regarding the lifecycle and management of tombstones. Deleting ...

Oracle

How to Find Cluster Resources Where Target!=State

Identifying resource state mismatches DBA typically checks cluster resources as part of patching efforts. However, when ...

Oracle

How to fix InfiniBand Error: Cable is present on Port "X" but it is polling for peer port

Facing an InfiniBand error? Let me guess: Ports 03, 05, 06, 08, 09 and 12 are alerting? You have a Quarter Rack? Have ...

Google Cloud

Comparing Pgpool-II and PgBouncer

While I was in the process of determining different HA solutions for PostgreSQL, Pgpool and PgBouncer both came into ...

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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

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How to Set Up REPMGR with WITNESS for PostgreSQL 10

Using rsync to Copy GoldenGate Trails from DBFS to ACFS

How to Upgrade Grid Infrastructure to 18c

Why It's Good Practice to Run Datapatch -prereq after Creating Database

How to fix error when MySQL client fails to load SQL file with Blob data

Working with Ansible, PostgreSQL and Docker

ProxySQL configuration file & startup process explained

How To Resize Oracle ACFS Volume

How to Test MySQL Server Hostname with ProxySQL Multiplexing

How to solve SELinux and MySQL log rotation issue

How the England and Wales Cricket Board scored with big data

Can you run Hadoop in the cloud?

How to Reduce Exadata Core Count

How to delete an RAC Database Using DBCA silent mode

An overview of best practices for implementing ML systems - Part 1

How to work around OMS 12.1.0.3 error: Metric evaluation error start – Get dynamic property error

Minimal Networking Knowledge Recommended for DBAs

How to Fix: The Selected Subscriber does not satisfy the minimum version compatibility

How To Reclaim ASM Disks

How to extend the /u01 filesystem on an Exadata

How to Prevent Linux 7 Housekeeping from Breaking Oracle

How To Delete MGMTDB and MGMTLSNR Using emcli

How to mine an RMAN Log

How to manage Oracle Flashback Log size

How to install 18c Grid Infrastructure in Silent Mode on Linux 7

Exadata: 7 Useful Commands to check Port/Sensor Alarms

Examining the lifecycle of tombstones in Apache Cassandra

How to Find Cluster Resources Where Target!=State

How to fix InfiniBand Error: Cable is present on Port "X" but it is polling for peer port

Comparing Pgpool-II and PgBouncer

Recent news

Pythian CTO Paul Lewis Featured in CIOReview on Why AI Adoption Is the Metric That Matters

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Pythian Sets Company Record with Over 100 New Customers in 2021

Pythian’s CTO Paul Lewis Featured Commentary Published by InformationWeek

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Keith Angell: Accelerating Enterprise Growth With Data And Analytics Through Remarkable Leadership

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