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 Locks. Show all posts
Showing posts with label Locks. Show all posts
Thursday, June 28, 2018

How to solve ORA-00069: cannot acquire lock -- table locks disabled

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Unfortunately, the only known way out of this is to 1. stop the database 2. start in restricted mode with "startup restrict" 3...
Wednesday, June 13, 2018

Display the current locks in a tree-like fashion

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Oracle provides some built-in scripts and views that can be used to monitor locks in the database http://docs.oracle.com/database/121/A...
Thursday, February 15, 2018

How to use dbms_application_info to create session details

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The package dbms_application_info lets you add supplemental information in your session, which can be picked up in the V$SESSION view. A...
Wednesday, January 20, 2016

What is the package SYS.USER_LOCK?

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Recenty I was migrating a database with a package that wouldn't compile because it couldn't find the package called upon in its code...
Friday, August 29, 2014

Login storm against database caused exhausted library cache

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One of our databases experienced massive contention in the shared pool, in form of wait events alerted as "library cache locks". ...
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Thursday, February 13, 2014

An easy way to find DML locks

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The view DBA_DML_LOCKS is a convenient view to use if you want to identify locks caused by uncommited DML statements. Consider the follow...
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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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