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.

Monday, January 23, 2017

How to confirm that the parameter INBOUND_CONNECT_TIMEOUT_listener_name is working

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From the documentation: Purpuose: To specify the time, in seconds, for the client to complete its connect request to the listener after th...
Thursday, January 12, 2017

How to solve ORA-02391 exceeded simultaneous SESSIONS_PER_USER limit

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The error definition: // *Cause: An attempt was made to exceed the maximum number of // concurrent sessions allowed by the SESSI...
Wednesday, January 11, 2017

How to find users in the database with default passwords

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select d.username,account_status from dba_users_with_defpwd d inner join dba_users u on d.username = u.username where u.account_status = ...
Monday, January 9, 2017

List temporary tablepaces and their tempfiles

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select t.file#,ts#,status,t.name "temp file name",n.name "tablespace name", n.bigfile,t.bytes/1024/1024 "Size MB...
Thursday, January 5, 2017

How to manually set the date and time on an AIX server

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Old, incorrect date: [root@myserver:/] date Wed Jul 12 10:11:36 CEST 2017 Change it to the current date: [root@myserver:/] date 010510152...

How to check status and start/stop daemons on the AIX platform

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For example, let's check the status of the ntpd service: [root@myserver:/] lssrc -a|grep ntpd xntpd tcpip ...
Wednesday, January 4, 2017

How to expand the /tmp file system on a Linux server

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Problem: /tmp needs more space. It is placed in the root directory of the server: [root@myserver ~]# df -h / Filesystem Size U...
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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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