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What is buffer synchronization?

Answer Posted / ankur

The fact that each application server has its own buffers
could result in data inconsistency across the various
application servers (instances). To prevent data
inconsistency, the SAP System uses periodical buffer
synchronization, which is sometimes called buffer refresh.

Buffer synchronization can be controlled by changing the
following parameters in the instance profile:

rdisp/bufrefmode = sendon | sendoff, exeauto | exeoff
rdisp/bufreftime =

NOTE: Buffer synchronization is required only for
distributed SAP Systems when more than one application
server (instance) is used. If your SAP System utilizes only
one application server (instance), buffer synchronization is
not needed. When the application server is restarted, all
buffers are erased and dynamically reconstructed.

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