AVEVA Global User Guide
Concepts
: What Happens if a Communication Link Fails
What Happens if a Communication Link Fails
If the communications link fails anywhere in the network, the base product users at each location will be able to carry on working with their existing data. Once the communications connection is restored, the databases will be automatically brought up to date when the next update occurs. Alternatively, the user can manually request that the databases are updated at any time the communication link is available.
All updates will be based on the most recent state of the databases, deduced by comparison of databases. This makes sure data integrity, even if previous updates have been lost.
If a communication link fails during an update, a database may be left with an incomplete session at the end. In this case, only the last complete session is ever used, and so data integrity is maintained.
1974 to current year.
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