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.

Friday, June 14, 2024

SQL for troubleshooting services in multitenant environment

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Query for troubleshooting services in a multitenant environment: set lines 200 col name format a40 col network_name format a40 col pdb for...
Wednesday, June 5, 2024

Some Oracle Net related terms and what they mean

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The terms used in Oracle Networking can be very similar and somewhat confusing. Here is an attempt to explain some of them. What is a ne...
Tuesday, June 4, 2024

Solution to ORA-29548: Java system class reported: release of Java system classes in the database (19.0.0.0.240116 1.8) does not match that of the oracle executable (19.0.0.0.240416 1.8)

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When I was trying to drop and recreate a schema in my PDB, I received the following error: drop user myuser cascade * ERROR at line 1: ORA...
Wednesday, May 29, 2024

How I removed a data guard config completely

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Here is my config: DGMGRL> show configuration; Configuration - DGConfig1 Protection Mode: MaxPerformance Members: kej01 ...
Friday, May 17, 2024

Easy Connect syntax

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Basic syntax: sqlplus uid/pwd@//servername.domain.com:port_number/service_name If you do not specify port, 1521 is assumed. Example con...
Wednesday, May 8, 2024

syntax for dropping a temporary file from a temporary tablespace

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For future reference, here is how to drop and recreate a temporary file in an existing temporary tablespace, but with a changed path: If a...
Monday, May 6, 2024

How to solve errors like "Interim patch num/num (DATAPUMP BUNDLE PATCH 19.21.0.0.0): Not installed in the CDB but installed in the PDB"

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After running autoupgrade, I was left with the following message in the logfile $ORACLE_BASE/cfgtoollogs/upgrade/auto/status/status.log: [S...
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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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