Marc Wagner

Migration from Non-CDB to Multitenant : Wallet Key Needed

I have been recently able to make several migration tests from On-Premises to Exadata, and during some of my tests I faced a PDB_PLUG_IN_VIOLATIONS with cause been “Wallet Key Needed” when converting a migrated Non-CDB to PDB. Explanation This violation(…)

Physical Online Migration to ExaCC with Oracle Zero Downtime Migration (ZDM)

A while ago I had been testing and blogging about ZDM, see my previous articles. And I finally had the chance to implement it at one of our customer to migrate on-premise databases to Exadata Cloud @Customer. After having been(…)

Logical Offline Migration to ExaCC with Oracle Zero Downtime Migration (ZDM)

A while ago I had been testing and blogging about ZDM, see my previous articles. And I finally had the chance to implement it at one of our customer to migrate on-premises database to Exadata Cloud @Customer. In this article(…)

Oracle ZDM Migration – java.security.InvalidKeyException: invalid key format

ZDM tool migration requires SSH Passwordless Login without passphrase between ZDM Host, the source and the target. Configuring appropriate keys might still result in a java security exception on this one. In this blog I will tell you how to(…)

dbvisit StandbyMP with OracleSE2 – dbvnet port problem

I’m currently working on a customer project, where we have 2 old Lenovo Servers, one ODA X7-2M and another ODA X8-2M. In the new project, we are replacing the 2 old Lenovo Servers by 2 new ODA X9-2L. The production(…)

dbvisit StandbyMP with Oracle SE2 – switchover error with ORA-27125

After having recently deployed a new customer system running Oracle SE2 databases in Disaster Recovery environment using dbvisit StandbyMP v11.4.1 on Oracle Linux 8.8, I did some final test running a switchover. The switchover failed with following error: ORA-27125: unable(…)

dbvisit StandbyMP with Oracle SE2 – ERROR_CODE:808 Database in unknown mode (94). Setup cannot proceed.

I recently deployed a new installation at one customer with 2 linux servers and 2 Oracle SE2 databases with dbvisit StandbyMP v11 disaster recovery solution. I prepared the standby database using RMAN duplication method, and then just wanted to create(…)

Oracle Zero Downtime Migration : Offline logical database migration from on-premises to Autonomous DB 

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(…)

Zero Downtime Migration (ZDM) to Oracle Cloud Infrastructure (OCI)

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,(…)

ODA vnetwork bridge with no IP address

It is not mandatory to setup an IP address on a bridge interface. A bridge forwards packets at MAC layer. But of course, if I would like to reach the DB System or the Compute Instance from the ODA, then(…)