You can tune the number of
connection requests that a WebLogic Server instance will accept before
refusing additional requests.
If you have not already done so, in the Change Center of the Administration Console, click Lock & Edit (see Use the Change Center).
In the left pane
of the console, expand Environment >
On the Summary of Servers page, select the
server instance for which you will configure connection backlog
Configuration > Tuning tab.
Modify the Accept Backlog value as
necessary to tune the number of TCP connections the server instance
can buffer in the wait queue.
If many connections are dropped or refused at the client,
and no other error messages are on the server, the Accept
Backlog value might be set too low.
If you are getting “connection refused” messages when you
try to access WebLogic Server, raise the Accept
Backlog value from the default by 25 percent. Continue
increasing the value by 25 percent until the messages cease to
To activate these changes, in the Change Center of the Administration Console, click Activate Changes. Not all changes take effect immediately—some require a restart (see Use the Change Center).