Maris Elsins

Maris Elsins is an experienced Oracle Applications DBA currently working as Lead Database Consultant at The Pythian Group. His main areas of expertise are troubleshooting and performance tuning of Oracle Database and e-Business Suite systems. He is a blogger and a frequent speaker at Oracle related conferences such as UKOUG, Collaborate, Oracle OpenWorld, HotSos, and others. Maris is an Oracle ACE, an Oracle Certified Master, and a co-author of “Practical Oracle Database Appliance” (Apress, 2014). He's also a member of the board at Latvian Oracle User Group.

Oracle

Performance Settings of Concurrent Managers

This is the second article in a series about internals and performance of concurrent managers. In this post, we'll ...

Oracle

Using the ILOM for troubleshooting on ODA

I worked on root cause analysis for a strange node reboot on client's Oracle Database Appliance yesterday.

Oracle

The Easy Way of Finding Similar SQL Statements

Oracle

Mining the AWR to Identify Performance Trends

Sometimes it's useful to check how performance of a SQL statement changes over time. The diagnostic pack features ...

Oracle

The Internal Workflow of an E-Business Suite Concurrent Manager Process

Concurrent processing is one of the key elements of any E-Business Suite system. It provides scheduling and queuing ...

Oracle

Automating password rotation for Oracle databases

Password rotation is not the most exciting task in the world, and that's exactly why it's a perfect candidate for ...

Google Cloud

How to build a cost-effective serverless blogging platform on GCP - Part 1

I remember when I started blogging in 2008. It was a nice learning experience, and it was rewarding, too - both the ...

Oracle

Meaning of "Disk Reads" Values in DBA_HIST_SQLSTAT

This post builds on my previous work regarding Mining the AWR. While analyzing performance, I ...

MySQL

Internals of querying the concurrent requests' queue - revisited for R12.2

Once upon a time I wrote about

Oracle

Investigating IO performance on Amazon EC2

I published a blog post called "

Google Cloud

Do AWR Reports Show the Whole Picture?

Introduction

AWR report is a great source of aggregated information on top activities happening in our ...

Oracle

getMOSPatch.sh - Downloading Patches From My Oracle Support

The transition away from FTP access in My Oracle Support (MOS) several years ago introduced a significant hurdle for ...

Oracle

The getMOSPatch V2 is here!

A while ago I created a Bash script called getMOSPatch.sh. Its purpose was to allow downloading Oracle ...

Oracle

Investigating IO performance on Amazon RDS for Oracle

I've recently been involved in quite a few database migrations to Oracle RDS. One thing that I had noticed when ...

Oracle

Be Warned: cmclean.sql Is Dangerous!

Description

I’m sure one of the most popular scripts for Apps DBAs on My Oracle Support is ...

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2025 employee survey on the use of AI In November 2025, Pythian, a professional services ...

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Maris Elsins

Posts by Maris Elsins

Performance Settings of Concurrent Managers

Using the ILOM for troubleshooting on ODA

The Easy Way of Finding Similar SQL Statements

Mining the AWR to Identify Performance Trends

The Internal Workflow of an E-Business Suite Concurrent Manager Process

Automating password rotation for Oracle databases

How to build a cost-effective serverless blogging platform on GCP - Part 1

Meaning of "Disk Reads" Values in DBA_HIST_SQLSTAT

Internals of querying the concurrent requests' queue - revisited for R12.2

Investigating IO performance on Amazon EC2

Do AWR Reports Show the Whole Picture?

Introduction

getMOSPatch.sh - Downloading Patches From My Oracle Support

The getMOSPatch V2 is here!

Investigating IO performance on Amazon RDS for Oracle

Be Warned: cmclean.sql Is Dangerous!

Description

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