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CentOS 8 binary compatible alternatives

There is a lot of roumors around since it was anounced to switch CentOS 8 from a Downstream Build from RHEL 8 to a Upstream Build for RHEL 8 on December 8th 2020. Many people asked why a second(…)

Delphix and upgrading the clones (Oracle)

By Franck Pachot . Delphix is a tool for easy cloning of databases. The idea is that all is automated: the user can create a clone, rewind or refresh it with one click. However, I was suprised that the(…)

Patching ODA HA from 19.8 to 19.10

In this blog I am describing the steps to patch an ODA HA from the version 19.8 to version 19.10. The patching was done with a customer. Thanks to Pierre. The name of the servers were changed The ODA(…)

PostgreSQL: set_config and current_setting

PostgreSQL comes with a rich set of administrative functions for various use cases. There are functions to control parameters, there are functions for index maintenance, others are for recovery and or backup control and there is much more. In this(…)

Building a PostgreSQL EC2 AMI for testing the latest commits

Testing the latest features or bug fixes in PostgreSQL can easily be done by pulling the latest commits from the git repository and compile PostgreSQL from source code. I am doing that frequently on my local sandbox VM but this(…)

Is it possible to switch a service between 2 pluggable databases?

Introduction In an Oracle database, services have multiple purposes: identifying group of users prior authenticating them enabling/disabling access to a database for particular groups managing preferred nodes on a RAC configuration redirecting users to the primary after a switchover/failover when(…)

An example of ORA-01152: file … was not restored from a sufficiently old backup

By Franck Pachot . Oracle Error: ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below ORA-01152: file ... was not restored from a sufficiently old backup ORA-01110: data file ... This error is one of(…)

SQL Server CPU limitation for Express and Standard Edition

Introduction When performing an audit on an SQL Server VM the first thing the system administrator told me was that there’s no issue with the CPU on this box, the monitoring shows it’s always around 50% usage. Problem Here is(…)

SQL Server: Get email notifications for Error Log entries

Introduction In a previous blog post, I did a T-SQL script reading Audit files to send emails with valuable information about instance changes. In this one, you will see how to get nice emails from critical errors or(…)

Pass a variable to a trigger in PostgreSQL

By Franck Pachot . With Oracle there are many ways to set a state in the session: context variables, set with DBMS_SESSION.SET_CONTEXT and retrieved with SYS_CONTEXT, or package global variables, or global or private temporary tables with ON COMMIT(…)