My Oracle Support Banner

WebLogic File Descriptor Leak When Using NIOSocketMuxer (Doc ID 2260511.1)

Last updated on JULY 25, 2022

Applies to:

Oracle WebLogic Server - Version to [Release 12c]
Information in this document applies to any platform.


On WLS, where upper stack products as OSB or Exalogic are present which uses the NIOSocketMuxer by default - a critical system availability issue is seen and the number of file descriptors kept increasing.

As a troubleshooting step, to check if issue is located in the muxers, if we switch to the posix muxer by adding the parameter                -Dweblogic.MuxerClass=weblogic.socket.PosixSocketMuxer

to the WebLogic managed servers, the issue with increase in file descriptors count appeared to stop.


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.