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For an HDR database server pair
to function, the two database servers must be able to establish a connection
with one another. To satisfy this requirement, the connectivity information
on each of the computers that is running the database server in a replication
pair must have at least the following entries:
- An entry that identifies the database server that is running on that computer
- An entry that identifies the other database server in the data-replication
pair
Important:
Set the nettype field of the sqlhosts file or registry and the
NETTYPE configuration parameter to a network protocol such as ontlitcp, onsoctcp, or ontlispx so that the database servers on two different computers can communicate
with each other. HDR does not work if the nettype field
specifies a non-network protocol such as onipcshm, onipcstr, or onipcnmp.
For information on how to redirect clients and change connectivity information,
see Redirection and Connectivity for Data-Replication Clients.
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