Gahan Zwart

When an Oracle PDB hot clone doesn’t work

Geplaatst op door Gahan Zwart

After nearly a year, a scheduled scripted PDB hot clone worked flawlessly, and ‘suddenly’ it failed with this error in the target cdb alert log. Some explanation:CDB1900A/PROD is the source cdb/pdb on machine PRODUCTIONCDB1900B/CLONER is the target cdb/pdb on machine CLONE 2021-03-08 15:50:49.421000 +01:00 CREATE PLUGGABLE DATABASE CLONER FROM PROD@clone_pdb Lees verder

How to connect Oracle 19C database on Red Hat Linux to a PostgreSQL database, with an Oracle database link over ODBC

Geplaatst op door Gahan Zwart

There are quite a few blogs about this subject, but I wanted to share how I performed creating this database link from Oracle to PostgreSQL. Though I mention Oracle 19C, these steps will probably work on all Oracle database versions from 11G onward. For the PostgreSQL version, this will work Lees verder

Patching Oracle 12.1.0.2, database datapatch fails with ORA-20004: Uninitialized state in install_file

Geplaatst op door Gahan Zwart

Now this blog is with courtesy of my esteemed colleague Jeroen Nijholt, also a DBA/Technical Consultant with Ordina. I asked his permission to use some of his notes to blog about this. He was assigned to patch a few Oracle 12.1.0.2 databases on Windows platform. The platform is irrelevant though, Lees verder

Microsoft AADSTS90033: A transient error has occurred. Please try again.

Geplaatst op door Gahan Zwart

On the 14th of December 2020 I started up the laptop from my employer but Microsoft Outlook. Teams and Onedrive could not connect. Also another application that uses a passthrough Microsoft login would not work and spit out this error: Request Id: [some unique id] Correlation Id: [some unique id] Lees verder

Don’t create a user from an Oracle script within a set container to pdb

Geplaatst op door Gahan Zwart

For an 19C Oracle database that will be added in an Oracle Fail Safe cluster I had to install statspack with an Oracle script, which also creates the perfstat user. Because I didn’t want to create a local listener because Oracle Fail Safe has is own mechanism for this, I Lees verder

Connecting to an Oracle database – some common problems and solutions

Geplaatst op door Gahan Zwart

This page is my attempt to collect some common problems and their solutions with connecting to an Oracle database. In the hopes that someday I bump into my own page, searching for a solution for some ORA-…. error. ORA-01017: invalid username/password; logon denied ORA-01017: invalid username/password; logon denied Cause: An Lees verder