When you upgrade with zero downtime, you perform the following general activities:
Upgrade the passive environment.
Switch the passive environment and the active environment.
Drop the former active environment.
Create the new passive environment from a copy of the new active environment.
Replicate all data changes that occur during the upgrade so that the environments are the same at the end of the upgrade process.
In this guide, some steps are conditional. Perform these steps only when you are doing a particular type of update or upgrade.
Conditional steps have one or more of the following prefixes:
Schema Update
. You changed an Operational Reference Store schema based on business requirements.
Schema Update with Data Change
. You changed an Operational Reference Store schema and some data in the database.
MDM Upgrade
. You are upgrading
Multidomain MDM
to a new major, minor, or hotfix release, or you are applying an emergency bug fix.
Infrastructure Upgrade
. You are upgrading other software or hardware in the same environments in which
Multidomain MDM
runs.
You can run the steps for the ZDT upgrade from a command line interface, such as shell scripts, or a command-line job scheduler. The upgrade runs from a single flow of control to allow for almost complete automation of the upgrade process. The ZDT upgrade procedure includes steps for messaging between the active environment and passive environment, maintaining replication control, and integrating backfill.
Upgrading
Multidomain MDM
from version 9.5.0 or earlier
In
Multidomain MDM
version 9.5.1, the data structure for the master database schema changed. If you are upgrading from version 9.5.0 or earlier, you must go through a readiness cycle before you start the upgrade cycle. The readiness cycle identifies data issues that you must resolve before you upgrade. After the readiness cycle, when you upgrade with ZDT, the upgrade cycle updates the data structure in the schema.
To request a version of this guide that contains the steps to upgrade from version 9.5.0 or earlier, contact Informatica Global Customer Support.