Error: “ Too many open files at Method)

After installing a Diagnostics Probe on the application server, if the following error occurs in the application log: Too many open files at Method)

The number of connections available on the JBoss/Linux server is the cause for this problem. Linux only allows 1024 connections.


The presence of the agent can create the requirement for many more connections than usual.

The fix – set "ulimit -n" in the shell that is running the application server (such as the

"ulimit -n" sets unlimited connections to the Linux/JBoss server, thereby allowed the agent and application to function properly.

Leave a Comment