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 parallelism. Show all posts

Wednesday, December 22, 2021

What is the difference between "force parallel" and "enable parallel" used in the "alter session" statement in Oracle?

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What is the difference between these two statements? ALTER SESSION ENABLE PARALLEL DML | DDL | QUERY; and ALTER SESSION FORCE PARALLEL ...

Wednesday, November 8, 2017

How to use ROWTYPE to fetch entire rows for insert into an interim table

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Here is how I used a PL/SQL record to insert rows from a table into an interim table, using parallel slaves and direct path: alter session ...

Monday, August 24, 2015

What does the DEFAULT DEGREE on tables actually mean?

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The DOP (degree of parallelism) settings on a table has to do with the number of threads per instance for scanning the table (an integer), o...

Friday, October 18, 2013

How to speed up index rebuild

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ALTER SESSION FORCE PARALLEL DDL; ALTER INDEX <schema>.<index_name> REBUILD PARALLEL 4 NOLOGGING; Note the "NOLOGGING...

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About Me

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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