OpenEdge Getting Started: Installation and Configuration - Product ...

Chapter 10: Configuration
Specifying IP version for underlying Java code
The OpenEdge NameServer and AppServer broker are implemented in Java. You
must set Java system properties in the ubroker.properties file to properly configure IP
communications, as described in Table 57.
Table 57: Java properties for IPv6
Define the property ... As ... To configure ...
java.net.preferIPv4Stack true The AppServer or NameServer
to only use IPv4 sockets. The
AppServer or NameServer are
not able to communicate with
IPv6 clients.
You can add the Java system properties to your ubroker.properties file by adding the
jvmArgs property. The jvmArgs property is not defined by default. The following
example shows the jvmArgs property specified for a sample AppServer named doc:
Database connection notes
false The AppServer or NameServer
to communicate with both IPv4
and IPv6 hosts.
java.net.preferIPv6Addresses true The default preference of IPv6
addresses over IPv4 addresses if
IPv6 is available on the host
system. This setting impacts the
default hostname resolution for
NameServer registration.
false The default preference of IPv4
addresses over IPv6 addresses if
IPv6 is available on the host
system. The AppServer will
resolve the default hostname to
an IPv4 address, even if an IPv6
address is configured.
[Ubroker.AS.doc]
jvmArgs=-Djava.net.preferIPv4Stack=false -Djava.net.preferIPv6Addresses=true
You can further configure your database server communications through AdminServer
configuration or broker startup. For example:
• AdminServer and RDBMS — Add an additional parameter for the AdminServer
to direct the database broker and the database agent ports to only accept
connections from the exact type address specified. Edit the file
AdminServerPlugins.properties to indicate the following information:
[PluginPolicy.Progress.AdminServer]
jvmargs=-DforceIPver=
312 OpenEdge Getting Started: Installation and Configuration