Logical Server Access

Multiplex servers can only be accessed by using logical servers. Login policies control user access to the logical servers.

You can assign one or more logical servers to a login policy. All users using the login policy can only access those multiplex servers that are effective member of the assigned logical servers. You can make one of these assignments to a login policy:

One or more user-defined logical servers, and/or the OPEN logical server.
SERVER — allows access to all of the multiplex nodes, subject to the semantics of the SERVER logical server.
NONE — denies access to any multiplex server.

Note:

You cannot specify SERVER or NONE in combination with other logical servers.

Node Membership Overlap
When multiple logical servers are assigned to a single login policy, no overlap in node membership is allowed among those logical servers, including the logical membership of the coordinator.
Logical Server Assignment Inheritance
Logical Server Context of a Connection
When you establish a user connection, the logical server context of the connection is automatically determined by the user’s login policy and the current node:
Setting Logical Server Assignment When Creating a Login Policy Using Sybase Central
Create logical server assignment using Sybase Central.
Setting Logical Server Assignment When Altering a Login Policy Using Sybase Central
Alter logical server assignment using Sybase Central.
Setting Logical Server Assignment When Altering a Login Policy Using Interactive SQL
Alter logical server assignment using Interactive SQL.

Parent topic: Logical Servers