Minimalistic Oracle

Minimalistic Oracle contains a collection of practical examples from my encounters with Oracle technologies. When relevant, I also write about other technologies, like Linux or PostgreSQL. Many of the posts starts with "how to" since they derive directly from my own personal experience. My goal is to provide simple examples, so that they can be easily adapted to other situations.

Tuesday, January 30, 2018

How to display processes in Linux in a tree-like fashion

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The simplest way to see operating system processes and their sub-processes is to use ps aufx Output will look something like the followi...
Thursday, January 18, 2018

How to work around ORA-01017 in a migrated 12c database

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You may see some users in your 12c database that have the password versions set to 10G: select username, password_versions from dba_user...
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Thursday, January 11, 2018

How to toggle between "Mixed mode" Auditing, Traditional Auditing and Unified Auditing

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This article is applicable to Oracle database versions 12.1 and onwards. For newly created databases, mixed mode auditing is enabled by d...

How to bulk-grant privileges to a selection of users using PL/SQL

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This anonymous PL/SQL script will select all the desired users, and then grant SELECT on a number of performance views to these. set serve...

How to check for table partitions using PL/SQL

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I created the following piece of code a long time ago. It checks if a table is partitioned or not, and list its partition. It takes the ta...

How to check if Unified Auditing is enabled in your database

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Check that Unified Auditing is enabled with the following query: col parameter format a20 col value format a20 set lines 200 select param...
Wednesday, January 10, 2018

What is "Automatic Reoptimization" introduced in Oracle 12cR1?

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Some definitions here, mostly taken directly from Oracls documentation, or quoted from Tim Hall's www.oracle-base.com Automatic Reopt...
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About Me

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Name: Vegard Kåsa
My career as an Oracle DBA startet in 2001, when I acceptet a request to take on the responsibility as my current employer's DBA. From that point and onwards, managing Oracle databases has kept me busy and engaged. I enjoy my work, and particulary appreciate the constant learning and devlopment that comes with the job. From 2014, I am self-employed through my company Oric Consulting AS (Norway), and from 2024 Oric Consulting AB (Sweden) I currently live in Göteborg, Sweden, with my family.
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