An Object Request Broker (ORB) manages the interaction
between clients and servers using the Internet InterORB Protocol (IIOP).
There are several ways to manage an ORB. For example, you can use
ORB custom property settings, or system property settings to configure
an ORB, or you can provide objects during ORB initialization.
About this task
Default ORB property values are set when the product starts
and the ORB service initializes. These properties control the run-time
behavior of the ORB and can also affect the behavior of product components
that are tightly integrated with the ORB, such as security. You might
have to modify some ORB settings to fit your system requirements.
After an ORB instance is established in a process, changes to
ORB properties do not affect the behavior of a running ORB instance.
You must stop the process and restart it before the modified settings
take effect.
A list of possible tasks for managing an ORB follows.
Procedure
- Adjust timeout settings to improve handling of network
failures.
Before making these adjustments,
review the Object Request Broker tuning guidelines.
- Tune the ORB.
For example, if most of your initial
method invocations are very small, you might want to set the com.ibm.CORBA.enableLocateRequest
custom property to false.
- Adjust the size of General Inter-ORB Protocol (GIOP) fragments
that the ORB uses.
You might want to make this adjustment
if your applications frequently send large requests.
- Change the port that the ORB listens on.
- Specify an alternative to the default RAS manager of the
ORB.
- Change the maximum number of connection requests that can
remain unhandled by the product ORB before the application server
starts to reject new incoming connection requests.
- Adjust thread-pool settings used
by the ORB for handling Internet InterORB Protocol (IIOP) connections.
- Troubleshoot an ORB problem.
If you experience problems with the ORB, you should review
the Object request broker troubleshooting tips. If necessary, you
can then enable ORB tracing, and then review the contents of the ORB
communications trace.
- Adjust the logical pool distribution
mechanism settings.