The Ingres Cluster Solution is a variation of a typical Ingres installation in which Ingres runs simultaneously on multiple host machines to provide cooperative and transparent access to one or more databases.

The Ingres Cluster Solution for OpenVMS is based on a full server installation with the requirement that file locations must be accessible from each node that is part of the cluster. Once installed, you run the iimkcluster utility to convert the initial installation into one of the cluster members (nodes), and then run the iisunode utility to add more nodes.

Use of the Ingres Cluster Solution is incompatible with the following Ingres features:

On each node, make sure that Ingres and your applications perform as expected. Ingres internally handles some restrictions by converting some lock levels and lock modes to lower level locks and stronger lock modes, which may result in increased contention or deadlocks.