There are several factors that determine the order in which
sites, databases, or both must be upgraded.
About this task
To get the full benefit of Rational® Synergy Release 7.2 or later,
all databases in the DCM cluster must be updated before resuming DCM
operations and regular usage.
However, when these
databases are located at different sites or when many of databases
are in the cluster, it might not be practical to upgrade them all
at one time. There might be some time when some of the cluster has
been upgraded to 7.2 or later and
some is at one or more prior releases.
Procedure
To determine the upgrading order:
- Hub databases must be updated before the spoke databases
that exchange data with them. After a hub database is updated, as
each spoke database is upgraded, it can fully use the new facilities
in Release 7.2 or later.
Conversely, if two Release 7.2 or later databases
share data by using a pre-7.2 or later hub
database, all three databases are constrained by the reduced capabilities
of the hub database.
- In Master and Satellite DCM methodology, the master database
is where master builds are performed and applications are released.
It is preferable to update the master database first, though the satellites
must also be upgraded before process rules can be shared.