Too Many Open Files Error When Using Non-Blocking IO Muxer

(Doc ID 1544820.1)

Last updated on NOVEMBER 05, 2016

Applies to:

Oracle Weblogic Server - Version 10.3.6 to 10.3.6
Information in this document applies to any platform.

Symptoms

A "too many open files" error occurs when using a Non-Blocking IO Muxer. In the server logs, the following error message is noted

Changes

As per the documentation at http://docs.oracle.com/cd/E23943_01/web.1111/e13814/wls_tuning.htm#BABEFDHJ, WebLogic Server provides a non-blocking IO implementation that may provide enhanced performance for some applications. If the Muxer Class attribute is set to weblogic.socket.NIOSocketMuxer or the -Dweblogic.MuxerClass=weblogic.socket.NIOSocketMuxer flag is set, this non-blocking IO is being used.

Cause

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