The ZDM 21.5 version brings some new functions like encrypting automatically now the TEMP, SYSTEM, SYSAUX and UNDO tablespaces. There is no need to do it manually any more after the ZDM migration, ZDM will take care of it on its own. Little problem, this is adding a new bug because the temporary database needs to be restarted to drop…
I have already written several articles about my experience migrating databases with Oracle Zero Downtime Migration. At that time, the version available was 21.4. The current version is now 21.5. Recently, I had the opportunity to patch our customer ZDM environment to 21.5 and to run new migrations in this new version. In this blog, I would like to share…
Let’s have a look how we can install and update Oracle Zero Downtime Migration tool, and see how we can automatise it with ansible… Check ZDM build Let’s first see how we can check ZDM version using zdm cli. [zdm@zdmhost ~]$ zdmcli -v RHP_PT.ZDM21_LINUX.X64_221207.30 [zdm@zdmhost ~]$ zdmcli -build version: 21.0.0.0.0 full version: 21.4.0.0.0 patch version: 21.4.5.0.0 label date: 221207.30 ZDM…
I have been blogging about ZDM Physical Online migration with noncdb to cdb conversion. As you could read in my previous article, the target database name on CDB level should be the same as the source database, knowing physical online migration is using Data Guard. In our case, at customer, we wanted to group the new migrated PDBs is some…
I have been sharing my experience migrating On-Premises database to ExaCC using ZDM Physical Online, see my previous blog : https://www.dbi-services.com/blog/zdm-physical-online-migration-a-success-story/ In this blog I will share how you can make a Dry Run migration on your own without impacting the source On-Premises database, so without having any downtime during the migration steps. In this blog, I will just mention…
I have been recently blogging about ZDM Physical Online Migration where I was explaining this migration method and preparing customer On-Premises to ExaCC migration. See my blog, https://www.dbi-services.com/blog/physical-online-migration-to-exacc-with-oracle-zero-downtime-migration-zdm/. I have now had the opportunity to migrate customer database and would like to share, in this blog, this success story. Clarifications First of all, I would encourage you to read the…
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:…
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…
Oracle GoldenGate allows to migrate Oracle database with Near Zero Downtime and with failback capability. Near Zero Downtime migration means very minimal application switchover downtime. The failback consists to rollback the migration from 19c to 12c. The goal of this blog is to describe how to migrate an oracle database from 12c to 19c via Oracle GoldenGate with Near Zero…
Introduction It’s the first edition of the Techdays, the Oracle community event in Belgium. This event happened in Antwerp these past 2 days, and a lot of speakers came from around the world to talk about their experience on focused subjects. Really amazing to heard such high-level conferences. And it was a great pleasure for me because I’ve been working…
