Blog | Pythian (25)

Oracle

Recovering from quarterly PSU patching disaster

Applying Patching Applying GRID INFRASTRUCTURE PATCH SET UPDATE 11.2.0.4.181016(Patch 28429134) for AIX (64-Bit) was a ...

Oracle

Reviewing the operation modes of Oracle GoldenGate BigQuery Handler

GoldenGate for Big Data 12.3.2.1.1 introduces a new target — Google BigQuery. The BigQuery handler can work in two ...

Cassandra

How to tweak the number of num_tokens (vnodes) in live Cassandra cluster

Some clients have asked us to change the number of num_tokens as their requirement changes. For example lower number of ...

Oracle

Solving an uncommon Oracle error code - ORA-01041

So, here is the thing. We have a customer running a 11.2 Single Instance Oracle database on Windows. I know the version ...

Oracle

Oracle Enterprise Manager Cloud Control 13c release 3 (13.3.0.0) database template

Intro I am currently working on a project to install Oracle Enterprise Manager Cloud Control Release 13.3 and was ...

Cassandra

Step-by-bstep monitoring Cassandra with with Prometheus and Grafana

In this blog, I’m going to give a detailed guide on how to monitor a Cassandra cluster with Prometheus and Grafana. For ...

Oracle

Using RDA to check Oracle Database preinstallation

Remote Diagnostic Agent (RDA) is often under-utilized. It has some very nice features such as database preinstallation ...

Oracle

Troubleshooting a datapatch error in Oracle

Troubleshooting datapatch failure As part of patching preparation, the following command was executed and failed: ...

Oracle

How do you test your Oracle database backup?

From my experience, the one area where a DBA cannot afford to make errors is in database backup. When was the last time ...

Oracle

Troubleshooting a GoldenGate error code

Introduction After applying Oracle GoldenGate V12.2.0.1.170919 for Oracle Database 12c OPTIMIZER Patch for Bug# ...

Oracle

Oracle parallel query hints reference - part 7: PQ_DISTRIBUTE and partitioned tables

In Part 1 of the series, we covered in detail how the PQ_DISTRIBUTE can change the data distribution method across ...

Oracle

Upgrading grid infrastructure from 12.1 to 12.2 in Exadata

1 Pre-requisites / preparation 12.2 Grid Infrastructure and Database Upgrade steps for Exadata Database Machine running ...

Oracle

GoldenGate: relative or absolute path for trail files?

When implementing GoldeGate solutions, something as simple as path to trail files can create havoc. What is the correct ...

Oracle

How to create an Oracle 18c client image in Docker

In a previous blog How to use Oracle instant client docker images, I described how to obtain and customize an Oracle ...

Oracle

How to find unused indexes and drop them safely in MongoDB

Indexes increase read performance and allow queries to access data faster. But they also need to be updated when the ...

Oracle

EM 12c, EM 13c: delete agent and targets using emcli

Situation It's feasible to delete agents and targets using GUI but can take a lot of work depending on configuration ...

Oracle

How to use Oracle Instant Client Docker images

There are two available, both Version 12.2. One is found on Docker Hub and the other on the Oracle Container Registry. ...

Oracle

The best times to apply Oracle quarterly patches

When is the best time to apply an Oracle quarterly patch? I suppose the answer is, "It depends." As it turns out, we ...

Oracle

How to test an Oracle database upgrade using a physical standby

It was a Thursday morning. I started my day at work and found out that I was tasked with running a test upgrade to ...

MySQL

Log buffer #555: a carnival of the vanities for DBAs

This log buffer edition covers Cloud, Oracle and MySQL.

MySQL

Authenticating MySQL 8.0 (Enterprise) against active directory

Recently our team was tasked to implement MySQL 8.0 in production for a client. While MySQL 8.0 is looking very ...

MySQL

Log buffer #556: a carnival of the vanities for DBAs

This log buffer edition covers Cloud, Oracle and MySQL.

Oracle

How to determine RMAN backup size

Importance A time long ago, I wrote a SQL query to determine RMAN backup size. Here is another validation for the SQL ...

Analytics

Analytics in the cloud - Azure analysis services

Azure Analysis Services is a fully managed platform as a service (PaaS) that provides enterprise-grade data models in ...

Oracle

How to creates Kubernetes jobs with Python

In this blog post I will do a quick guide, with some code examples, on how to deploy a Kubernetes Job programmatically, ...

Oracle

How to run RHEL5/Centos5 in Google Cloud

Google Cloud instances run on top of the KVM hypervisor. In newer KVM versions, such as the one used in Google Cloud, ...

Oracle

Does Oracle allocate PGA in HugePages?

The short question While preparing a presentation I am giving this year about HugePages, a colleague of mine at Pythian ...

Oracle

Enable X11 forwarding after Sudo SSH session for AWS EC2 Linux instance

Challenges Working with a secure environment presents some challenges and this post will demonstrate how to overcome ...

MySQL

Is slave_exec_mode idempotent actually idempotent?

Background Co-Author: Rafael Alvarez When you look up the word idempotence in wikipedia you get the following ...

Microsoft Azure

News and upates from Microsoft Azure, pt II

I recently joined Chris Presley for his podcast, Cloudscape , to talk about what’s happening in the world of ...

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Recovering from quarterly PSU patching disaster

Reviewing the operation modes of Oracle GoldenGate BigQuery Handler

How to tweak the number of num_tokens (vnodes) in live Cassandra cluster

Solving an uncommon Oracle error code - ORA-01041

Oracle Enterprise Manager Cloud Control 13c release 3 (13.3.0.0) database template

Step-by-bstep monitoring Cassandra with with Prometheus and Grafana

Using RDA to check Oracle Database preinstallation

Troubleshooting a datapatch error in Oracle

How do you test your Oracle database backup?

Troubleshooting a GoldenGate error code

Oracle parallel query hints reference - part 7: PQ_DISTRIBUTE and partitioned tables

Upgrading grid infrastructure from 12.1 to 12.2 in Exadata

GoldenGate: relative or absolute path for trail files?

How to create an Oracle 18c client image in Docker

How to find unused indexes and drop them safely in MongoDB

EM 12c, EM 13c: delete agent and targets using emcli

How to use Oracle Instant Client Docker images

The best times to apply Oracle quarterly patches

How to test an Oracle database upgrade using a physical standby

Log buffer #555: a carnival of the vanities for DBAs

Authenticating MySQL 8.0 (Enterprise) against active directory

Log buffer #556: a carnival of the vanities for DBAs

How to determine RMAN backup size

Analytics in the cloud - Azure analysis services

How to creates Kubernetes jobs with Python

How to run RHEL5/Centos5 in Google Cloud

Does Oracle allocate PGA in HugePages?

Enable X11 forwarding after Sudo SSH session for AWS EC2 Linux instance

Is slave_exec_mode idempotent actually idempotent?

News and upates from Microsoft Azure, pt II

Recent news

Pythian Announces Integration with Gemini to Help Accelerate Cloud Migration for Oracle Applications

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Pythian Recognized as a Top AI & Data Consulting Firm for 2026

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Pythian and Three of Its Leaders Named Finalists for the 2025 CRN Women of the Year Awards

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Pythian Announces New Oracle Database@Google Cloud Migration Services

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Pythian Recognized on CRN’s 2024 Solution Provider 500 List and DBTA’s 100 Companies That Matter Most in Data for 2024

Pythian Welcomes Brooks Borcherding as Chief Executive Officer

Pythian’s Vanessa Simmons and Donna Williston Honored by CRN on 2024 Women of the Channel Lists

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Pythian Announces Generative AI Strategy and Offerings to Accelerate Enterprise Innovation

CRN Names Pythian’s Vanessa Simmons a 2023 Women of the Channel Power 80 Solution Provider

Award-Winning Marketing Veteran Christina O’Reilly Joins Pythian Services as Senior Vice President, Marketing

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Pythian’s SAP Services Practice Grows by 300 Percent in 2021

Pythian Renews Google Cloud Infrastructure Specialization in the Google Cloud Partner Advantage Program

Pythian Services Recognized on CRN’s 2022 MSP 500 List

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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

How to Modernize Backup Without Breaking the Bank

Pythian Launches FinOps Managed Services

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Pythian Taps Seasoned Cloud and Data Expert Paul Lewis as CTO

Pythian Achieves Managed Services Provider Status In the Google Cloud Partner Advantage Program

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

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