How to Overcome the Top 10 SQL Server Performance Challenges

Working with consulting clients is rewarding, interesting, and challenging. In discussion with some of my colleagues, I’ve noticed the same performance challenges come up over and over again across clients with completely different hardware, industry verticals, levels of staff seniority,…

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EM 13c: Patching Oracle Enterprise Manager With Release 4 Update 6 (13.4.0.6)

Once I had done this, I created a property file to be used during the patching activities so I wouldn’t have to input the Weblogic information over and over. The next step was to analyze whether this patch was applicable…

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How to Enable RAM Cache in Oracle Exadata

A brief background on RAM cache or in-memory OLTP acceleration In this post I will present a feature — to simplify let’s call it RAM cache — introduced in Oracle Exadata Storage Server image 18.1. You’ve probably heard a lot…

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Resolving Error ORA-28353: Failed to Open Wallet

Full disclosure: this is a post I've had in draft mode for almost one and a half years. I noticed the original error after applying the October 2018 bundle patch (BP) for 11.2.0.4. While I realize most clients are no... Read More >

Management and Troubleshooting Features: Data Guard Command-Line Interface (DGMGRL) 19c

With Oracle Data Guard promising high availability, data protection and disaster recovery for enterprise data, it’s useful to understand the Data Guard command-line interface (DGMGRL) which enables you to control and monitor a Data Guard configuration from the DGMGRL prompt…

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Overcoming ORA-01722 Error While Doing an Upgrade With Different DST Versions

This will be a short entry, but hopefully, it will help if you face the error “ORA-01722: invalid number” while doing an upgrade. Today I was doing an Oracle RDBMS upgrade from 12.2 with DST 34, to 19.7 with DST…

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Setting up MySQL Monitoring With New Relic Infrastructure Pro

If you have a New Relic Infrastructure Pro license, and unmonitored MySQL servers, there’s now an easy solution at your fingertips. With the New Relic MySQL integration you can monitor and graph almost any detailed metric you could possibly want….

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Dipping Your Toes Into Building an Analytics Platform on Google Cloud Platform

“We have many disparate data sources and we’re having a hard time getting a global view of all our data across our organization.” “Our data is currently all in <enter data warehouse name here> and we want to migrate it…

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Leading Through Crisis – What Ernest Shackleton Can Teach Us About the COVID Pandemic

In January 1915, polar explorer Ernest Shackleton’s ship became trapped in ice near Antarctica. For the next two years, he kept his crew of 27 men alive on a drifting ice cap, before leading them to safety. In this article…

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Benefits of Workshop Learning: a Cassandra Workshop Example

At Pythian, we pride ourselves in assisting and empowering our clients. We strive to understand the needs of each customer and to teach customers to make the most of their resources. Experience has shown that the best way to learn…

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