Introduction
This section describes how to manage named
objects stored by a realm server against a Nirvana
channel. Named objects are stored by the server and
provide state information for durable
consumers mapped to specific names on channels.
These named objects are stored by the server, and so
every time a consumer uses the named object, it will
always begin consuming from where the previous consumer
finished.
The Nirvana apis provide methods for managing
named objects programatically.
The Enterprise Manager also provides a method to remove
named objects from channels.
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In order to retrieve and remove any named objects
present on a channel, firstly you need to select the
channel. This will present a set of panels within a
tabbed pane for the channel in question. One of these
is labelled 'Named Objects'. When you first select the
'Named Object' tab, this table will be empty. If you
click on the button labelled 'Get Names', this will
populate the table with any named objects found for
that channel. The image below shows the named object
table for the /eur/rates channel has a named object
for the name 'administrator'.
The named object table shows each named object as a
row in the table. The columns of the table show the
name, current event id (as known by the server), whether
the named object is cluster wide and whether it is persistent
(when a realm is restarted the named object state is
read from disk as opposed to being held in memory where
it would be lost after a restart).
By highlighting a named object in the table, you can
remove it by clicking on the 'Delete Name' button. This
button will remove the named object from the server.
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