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, July 22, 2024

Syntax for flashback database to a specific timestamp using sqlplus

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flashback pluggable database PDB1 TO timestamp to_timestamp('2024-07-22 15:12:01', 'YYYY-MM-DD Hh24:MI:SS');
Friday, July 19, 2024

What do do if SET SERVEROUTPUT ON doesn't work

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If you have an anonymous piece of pl/sql code and you have turned on serveroutput, like this: set serveroutput on You may need to enable...

How to check if your PostgreSQL server is part of a replication setup

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If the server is down, check the entries in postgresql.auto.conf. The following postgres.auto.conf is from a slave server: wal_level = ...
Tuesday, July 16, 2024

How to check StaticConnectIdentifier and other properties using Data Guard Broker

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DGMGRL> show database cdb 'StaticConnectIdentifier' StaticConnectIdentifier = '(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=or...
Friday, July 12, 2024

Datapatch seems to "hang" or taking an extraordinary long time to complete. What could be wrong?

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When using the utility datapatch to either apply or rollback patches in my Oracle 19c ORACLE_HOME, I was suprised at the time it took to (i...
Thursday, July 11, 2024

How to solve RMAN-08137: warning: archived log not deleted, needed for standby or upstream capture process

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In one of my cloned databases, the FRA was filling up and pushing towards the limit of 2 TB. Since it was cloned from a production databas...
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Tuesday, July 9, 2024

Stupid mistake that causes TNS-12533: TNS:illegal ADDRESS parameters during tns names resolution

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Consider the following tnsnames.ora file: cdb = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = myserver1.oric.no)(PORT = 1521)) ...
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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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