When using ZDM for a Physical Online Migration, even in the last current version, 21.4.5.0.0, switchover is failing. In this blog, I will share the reason and the solution to solve the problem before moving forward with the migration. Problem description We are using last version of ZDM : [zdmuser@zdmhost migration]$ /u01/app/oracle/product/zdm/bin/zdmcli -build version: 21.0.0.0.0 full version: 21.4.0.0.0 patch version:…
Procedure to check a one-to-one migration between different database types autogenerated and generically with OMrun.
Is the Oracle Cloud a hot topic for you? dbi services organized an event about the Cloud today in Lausanne: “Oracle Cloud Infrastructure: everything for an efficient migration“. After a welcome coffee to meet each other, Pascal Zanette shortly introduced the event and the agenda of the day. Our CTO Hervé Schweitzer presented then YaK, developed by dbi services.The idea…
I have recently written a blog introducing the Oracle ZDM (Zero Downtime Migration) tool : https://www.dbi-services.com/blog/zero-downtime-migration-zdm-to-oracle-cloud-infrastructure-oci/ I have also done some tests performing an offline logical database migration from a database running on an OCI VM (this would simulate an on-premises database) to an ADB (Autonomous DataBase) using a backup location in OCI. I would like through this blog to…
The question to migrate or not to the Cloud comes more and more often now. There are some added values to go to the Cloud as analytics capabilities, scalability and flexibility, cost saving, no dedicated hardware and its related maintenance, no maintenance for patch, no worry to have about HA, DR or Data Protection. We can easily understand this. But…
By Mouhamadou Diaw Dealing these last days to database migration with a customer, I write this blog to describe the main tasks The context is to migrate databases to a new infrastructure. Below the configuration Source : Linux Suse in a non-multitenant architecture Target : Oracle Enterprise Linux 8 with multitenant The database version is Oracle 19c Installing Oracle Binaries…
We are excited to announce several new features that will be coming with OMrun soon. These features have been developed with the feedback of our customers in mind. In addition we also made a lot of small improvements. Many of those behind the scenes. But to list the most important ones we will limit ourselves to the top 5 new…
I’ve worked with my mate Donovan Winter (we are called Thomson and Thompson!) on a very interesting project for one of our customer that’s worth sharing. They had an old version of GitLab (release 13.3.4) running in a pod in OpenShift and wanted to migrate it into a Virtual Machine under Rocky Linux 8. They then wanted to upgrade it…
In one of my last blog-posts I spoke about Striim which is a data replication platform that can be used for migrations but also for offloaded reporting or even real-time analytics.A new Azure feature, currently on preview, named Link feature for Azure SQL Managed Instance is available. It gives the possibility to connect a SQL Server hosted on-premise or in…
As you might be aware, CentOS 8 is end of life since the 31st of December 2021. If you are still using and running CentOS 8, you might want to migrate to some alternative distributions in order to keep a Red Hat compatibility. Those alternative distributions might be chosen between : Rocky Linux AlmaLinux Red Hat Enterprise Linux Oracle Linux…
This Blog describes the Migration from CentOS 8 to Rocky Linux 8. And hopefully there is a backup or VM Snapshot in place when something goes wrong. At first Updating CentOS 8 to the latest is required, but this is now not so easy, most Repositiory Mirrors are deprecated. As Preparation an adaptation of the CentOS Repo files is needed…
This post gives a short intro to directory naming, shows how to import from tnsnames.ora to an LDAP directory. Finally, as an alternative, you get an example how a TNS connection string looks like in ldif file format. LDIF can be used universally to export and importing data to LDAP directories. What is directory naming? In order to connect to…
