Local and Global Operations. Replication Methods. 

There are two types of operations in the J2EE Engine naming system:

·        Local – all objects and contexts are created, managed, and can be accessed only on the server on which the current naming operation takes place.

·        Global – objects and contexts are created on all servers and can be accessed (lookup, rebind, unbind, rename) from every server in the cluster.

Local operations can be performed only over local objects or in the root context. An exception is made for unbind()and destroySubcontext() operations, which can be performed over global objects so that the Web Container Service can remove all global and local objects and contexts created by the application from the naming system (during the stop/undeploy process of an application).

Global operations can be performed in local and global contexts, but only over global objects.

 

See also:

 

An Algorithm for Execution of Local and Global Operations