SQL/MP Installation and Management Guide

Managing a Distributed Database

HP NonStop SQL/MP Installation and Management Guide—523353-004

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Managing Mixed Versions of SQL/MP

Sometimes a network might be required to run in a SQL/MP mixed-version

environment. These activities can produce this situation:

•

Running different versions of SQL/MP software simultaneously on separate nodes

of an interrelated SQL database application

•

Running a newer version of SQL/MP software on a development node that

supports a production node or nodes running an older version of SQL/MP software

•

Upgrading to a newer version of SQL/MP or downgrading to an older version

Different SQL/MP software versions are not a concern if the nodes involved in a

network are not database-interrelated. If your network is operating in one of the

preceding scenarios, however, see the SQL/MP Version Management Guide for

information about software and object version compatibilities in mixed-version

networks.

If your network has nodes running C-series and D-series software, processes on

D-series nodes must run at a low PIN if they communicate with processes on C-series

nodes. For more information, see Mixed-Version Network Considerations on

page 2-13.