Marc Wagner

Create new PDB in a Data Guard environment on ExaCC

In this blog, I would like to share how to create a new PDB in one CDB in a Data Guard environment on the ExaCC. Naming Convention Following is the naming convention: CDB Name is MYCDB ExaCC Primary site cluster(…)

Issue running Dynamic Scaling on hardened system

During my Dynamic Scaling tests, you might have seen my other blog on same subject, I faced one issue where Dynamic Scaling could not be started properly due to hardened configuration. In this blog I would like to share my(…)

Configure Dynamic Scaling as Grid HA resource

I have recently blogged about how to install and configure Dynamic Scaling as an Oracle Linux Service daemon. See my blog, https://www.dbi-services.com/blog/how-to-automatically-manage-ocpu-on-exacc-using-dynamic-scaling/ In this blog I would like to show how to configure it as an Oracle Grid HA(…)

How to automatically manage OCPU on ExaCC using Dynamic Scaling

To automatically scale down and up the OCPU on ExaCC cluster according to the CPU utilisation, we can use dynamic scaling. Dynamic scaling engine can be installed on each cluster nodes VM, from a remote machine as master or from(…)

Why relocating the PDB after ZDM Physical Online migration with noncdb to cdb conversion is a must?

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(…)

Dry Run with ZDM Physical Online with no Downtime for the source

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(…)

ZDM Physical Online Migration – A success story

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(…)

ZDM Physical Online Migration failing during ZDM_SWITCHOVER_SRC phase

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.

Patching Oracle databases with Nutanix NDB

A few years back I had the great opportunity to test Nutanix NDB, at that time called Nutanix Era, and I had written a few blogs about provisioning Oracle databases, taking snapshot, log catchup, cloning a database, restoring a database,(…)

Migration from Non-CDB to Multitenant : CDB is using local undo, but no undo tablespace found in the PDB

During a past migration test from on-premises to ExaCC, I faced a pdb violation, stating, CDB is using local undo, but no undo tablespace found in the PDB, after having run noncdb_to_pdb.sql script. Explanation The problem comes from the fact(…)