Replication Guide and Reference

Support for Occasionally-Connected Systems

IBM Replication has enhanced the Capture and Apply programs to support mobile and occasionally connected systems.

• IBM Replication provides dial and disconnect exits for telephone connectivity.

• The Apply program can defer reporting the subscription progress to the pruning control table. Deferred reporting reduces remote SQL connect processing for a replication subscription to a single connect call and optimizes remote thread allocation and password verification.

• With enhanced support for push and pull configurations, mobile users need one Apply program on their laptop computer to replicate to and from the central computer and connecting as a mobile client for update-anywhere replication. The single Apply program process on the mobile client handles posting of updates replicating to or from the laptop. While disconnected, the mobile client imposes no burden on the network because central servers are not kept busy continuously looking for the mobile client. Rather, the laptop computer "finds" the central server when it dials in.

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