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.

Showing posts with label materialized views. Show all posts
Showing posts with label materialized views. Show all posts
Thursday, January 17, 2019

What types of materialized views can be created in an Oracle database?

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There are three types of Materialized Views that can be created in an Oracle database: 1. Materialized Views with Aggregates * The most...

What is a "fast refresh" of materialized views?

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A FAST REFRESH of a materialized view applies only changed data to the materialized view. This way you don't have to rebuild the mater...
Friday, January 11, 2019

How to troubleshoot query rewrites

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1. Run the script $ORACLE_HOME/rdbms/admin/utlxrw.sql logged in as the schema who owns the materialized view. 2. Analyze the query by lo...
Friday, December 21, 2018

How to create a materialized view with query rewrite enabled

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In this example, I am creating a materialized view to support queries against a table with 20 million rows, which are looking at the maximu...
Wednesday, March 29, 2017

How to solve ORA-01031: insufficient privileges when creating a materialized view

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At first, I got the following error from the Oracle server when exeuting the "CREATE MATERIALIZED VIEW" script: where tab2.yea...
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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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