ibmmon.exe is an executable file that runs the ibmmon process on your PC. It is unlikely to cause any harm or errors, but you can stop or remove it if you uninstall the application that uses it. Hi Gurus, As per Earlywatch report i have changed my IBMMON_AGENT user from communication type user to System. Does anyone know if this has any effect on alerts. We would like to show you a description here but the site won’t allow us. OMEGAMON, later IBM Tivoli OMEGAMON XE, is a software family of performance monitors for IBM zEnterprise computer environments. These products were originally written, marketed, sold and maintained by Candle Corporation, [1] which was acquired by IBM in 2004.