Advanced Queuing - Oracle

end;
Working with Messaging Gateway
Messaging Gateway does not impose a restriction on the number of links that you
can configure.
Altering a Messaging Gateway Link
Some link information can be altered. For an MQSeries link, the max_
connections, username, password, inbound_log_queue, and outbound_
log_queue properties can be altered after creation. In the following example, the
‘mqlink’ link created in "Creating a Messaging Gateway Link" is altered so that
the max_connections and password properties are changed.
If the type of a property is VARCHAR2, a value of DBMS_MGWADM.NO_CHANGE leaves
the property unchanged. For properties of other types, a value of NULL leaves the
property unchanged. Use the mgw_mqseries_properties.alter_construct
function when altering an MQSeries link. This sets the appropriate values
automatically. Then set the values that need to be changed.
declare
v_options sys.mgw_properties;
v_prop sys.mgw_mqseries_properties;
begin
-- Alter certain MQSeries properties used for MQSeries.
v_prop := sys.mgw_mqseries_properties.alter_construct();
v_prop.max_connections := 2; -- max_connections increased
v_prop.password := ‘newpasswd'; -- change password given to queue manager
dbms_mgwadm.alter_msgsystem_link(
linkname => 'mqlink', -- link name
properties => v_prop, -- MQSeries driver properties
-- options will not be changed
comment => ‘link to queue manager, my.queue.manager. on my.host ‘);
-- add comment
end;
You can alter link information when the Messaging Gateway agent is running or
when it is not.
See Also: Oracle9i Supplied PL/SQL Packages and Types Reference,
DBMS_MGWADM, for restrictions on changes when the Messaging
Gateway agent is running
Messaging Gateway 18-17