EM 12c: Agent Sign Off from the Enterprise Manager 12c Cloud Control Agent Upgrade Console Fails With Error: java.io.IOException: error=24, Too many open files

(Doc ID 1604690.1)

Last updated on MAY 20, 2017

Applies to:

Enterprise Manager Base Platform - Version and later
Information in this document applies to any platform.


Enterprise Manger (EM) 12c Cloud Control Agents in the process of upgrade to version 13.2 require a sign off after validation prior to activation (switching over) in the Enterprise Manager 12c Upgrade Console:

Enterprise Manager Cloud Control Upgrade Guide
12c Release 5
Chapter 11 Upgrading Oracle Management Agents 10g Release 5 ( or 11g Release 1 ( to 12c Release 5 (
11.3 Verifying and Signing Off the Health Report of Deployed Oracle Management Agents 12c Release 5 (


EM 13c Agent sign off fails with the following error:

Failed to launch process: Cannot run program "/usr/apps/oracle/product/agent/agent12c/sbin/nmo": java.io.IOException: error=24, Too many open files






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