Blog | Pythian (22)

MySQL

MySQL high availability with ProxySQL, Consul and Orchestrator

In this post, we will explore one approach to MySQL high availability with ProxySQL, Consul and Orchestrator. This is a ...

Oracle

Oracle E-Business Suite and 12cR1 database in Extended support - What to do?

Introduction If you are one of the folks who have already upgraded the production E-Business Suite database to 19c ...

Oracle

Troubleshooting Oracle Cloud Infrastructure Automatic Backups

Background I could start this blog the same way I started this one because everything is supposed to be easy and at a 1 ...

Oracle

Using MDBUtil To Create Grid Infrastructure Management Repository Database

Whether Grid Infrastructure Management Repository (GIMR) database MGMTDB is required or not depends on the version of ...

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

Why you should not uninstall Database Vault from a CDB

Important Notice Now that we are fully into database upgrades, here is an important item to be aware of: As you may ...

Oracle

Exadata Smart Scan: A Quick Overview

Introduction I decided to write about Exadata Smart Scan feature for this blog post. Why Smart Scan? Well, because it ...

Oracle

How to Find Clusterware Configuration Details Using srvctl

At times, you may be required to gather information about Oracle Clusterware configuration details. Instead of running ...

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 use createGoldImage For Cloning in 19c

According to the Oracle Database Upgrade Guide, the traditional clone.pl script has been officially deprecated. The ...

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 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 ...

Oracle

How To Fix ASM Disk Header Status from "FORMER" To "MEMBER"

I made an error when creating an Oracle ASM disk group which resulted in not being able to drop or mount the disk group ...

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

Issues and workarounds for Exadata Patching

This post describes some of the most recent issues I have faced while patching an Oracle database machine (Exadata). ...

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

Custom fix required when using latest JDK with Oracle E-Business Suite R12.1.3

Update 11-JUN-2021: Doc ID 2353710.1 has been updated. It is recommended now to apply two patches: 10.1.3 Home Patch ...

Oracle

How to fix Error: OMSPatcher finds that previous patching session is not yet completed

When planning a patch for a client's OMS, I found the following: OMSPatcher finds that previous patching session is not ...

Oracle

How reliable is autoupgrade.jar analyze mode?

It sounds like you hit one of those classic Oracle "gotchas" where the tool tells you everything is fine until the ...

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 Resolve Database Software Install To Incorrect Location

We were recently required to install database software to /u01/app/oracle/12.2/db1. However, when using GUI to install ...

Oracle

How to fix EBS weblogic admin console when not accessible after CPU patching

Background With the recent CPU patching on Oracle E-Business suite R12.2, many customers faced issues with accessible ...

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

Do Not Mix Different Patch Types

I was preparing to apply a July 2019 path for a single instance database without ASM. Here are the available patch ...

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 ...

Microsoft SQL Server

How to install Vertica for test purposes

The column-oriented Vertica Analytics Database Platform was designed to manage large, fast-growing volumes of data and ...

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 ...

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MySQL high availability with ProxySQL, Consul and Orchestrator

Oracle E-Business Suite and 12cR1 database in Extended support - What to do?

Troubleshooting Oracle Cloud Infrastructure Automatic Backups

Using MDBUtil To Create Grid Infrastructure Management Repository Database

Working with Ansible, PostgreSQL and Docker

ProxySQL configuration file & startup process explained

Why you should not uninstall Database Vault from a CDB

Exadata Smart Scan: A Quick Overview

How to Find Clusterware Configuration Details Using srvctl

How the England and Wales Cricket Board scored with big data

Can you run Hadoop in the cloud?

How to use createGoldImage For Cloning in 19c

How to Reduce Exadata Core Count

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 ASM Disk Header Status from "FORMER" To "MEMBER"

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

Issues and workarounds for Exadata Patching

How To Reclaim ASM Disks

Custom fix required when using latest JDK with Oracle E-Business Suite R12.1.3

How to fix Error: OMSPatcher finds that previous patching session is not yet completed

How reliable is autoupgrade.jar analyze mode?

How to extend the /u01 filesystem on an Exadata

How To Resolve Database Software Install To Incorrect Location

How to fix EBS weblogic admin console when not accessible after CPU patching

How to manage Oracle Flashback Log size

Do Not Mix Different Patch Types

Exadata: 7 Useful Commands to check Port/Sensor Alarms

How to install Vertica for test purposes

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

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