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 ...

Services [not] Starting Automatically with CRS after Reboot?

Hello all! So, a client asked me to check why his database was not starting with CRS after a reboot. I started ...

OEM 13c Monitoring Features - Part 5, Best Practices and Automatic Incident Creation

T his is the fifth in a series of blog posts covering the most important topics you should know to completely monitor ...

OEM 13c Monitoring Features – Part 3, Reports Based on Metric Data

This is the third in a series of blog posts covering the most important topics you should know to completely monitor ...

Solving an unusual Oracle upgrade issue

Background I recently came across a very unusual situation. During an upgraded review, I noticed the ...

OEM 13c Monitoring Features - Part 2, Extended Metrics

This is the second in a series of blog posts covering the most important topics you should know to completely monitor ...

OEM 13c Monitoring Features - Part 4, Corrective Actions

This is the fourth in a series of blog posts covering the most important topics you should know to completely monitor ...

OEM 13c Monitoring Features: Part 1

This is the first in a series of blog posts covering the most important topics you should know to completely monitor ...

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 ...

How to Automate Killing Inactive Sessions with Resource Manager

Problem Statement Are you manually (or via a script) killing idle sessions on your database? As a consequence, your ...

An Introduction to Chaos Engineering: Trying to Break Stuff

Some time ago there was a car ad with the slogan "Don't use it, abuse it", meaning that no matter what you do to the ...

Azure Platform and Network Infrastructure Security fundamentals

How To Downgrade Grid 19c Clusterware to 12.1

There may be many reasons for downgrading from Grid 19c to 12.1; however, the reason I am downgrading is to rerun a ...

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 ...

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 ...

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 ...

Live Kernel Updates Without Downtime in New RHEL 8.1, 7.7 and 7.6 Release

Most often companies scheduling downtime for patching of the Linux kernel in a production environment follow strict ...

MariaDB Temporal Tables: Uncut & Uncensored (Part III)

(This is the third of a series of blog posts covering MariaDB Temporal Tables. The first and second in the series ...

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 ...

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 ...

Cluster Level Consistency in InnoDB Group Replication

When you have multiple database servers working together as nodes in a cluster, it’s beneficial to understand how data ...

AWS's Top 5 Commands: ALTER SYSTEM and Managing SYS Objects in RDS

Essential administrative commands for Amazon RDS for Oracle Navigating administrative limitations in RDS We often ...

How to Test Data Guard Fast-Start Failover by Shutting Down Standby Server

This post will demonstrate the procedure for testing Oracle Data Guard Fast-Start Failover by shutting down the server ...

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 ...

How to fix dbupgrade script issue when upgrading Oracle Database Standard Edition

Objective: Upgrade Oracle database from 11.2.0.4 to 12.2.0.1

How to Test Data Guard Fast-Start Failover by Shutting Down Primary Server

This post will demonstrate the procedure to test Oracle Data Guard Fast-Start Failover by shutting down the server ...

How to Set Up Out Of Band Notifications in OEM 13C

So, after an abnormally quiet weekend, I was being paged: Oracle Management Services (OMS) was down! Well, this ...

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 ...