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OPMN Stops Working and OC4J Home Gives "No Buffer Space available (maximum connections reached): JVM_Bind" on Windows (Doc ID 431160.1)

Last updated on FEBRUARY 01, 2022

Applies to:

Oracle Fusion Middleware - Version to [Release AS10gR2 to AS10gR3]
Oracle Fusion Middleware - Version and later
Generic Windows


After several days of good operation following reboot, the opmnctl stops working. The service show that
the service is running, but opmnctl will not start or stop any services with the message "Unable
to connect to OPMN. OPMN may not be up."  Additionally, the OC4J home container log file shows "No buffer space available (maximum connections reached): JVM_Bind". 

The OC4J_Home_Default_island shows the following:




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