Unable To Start Up Instant Messaging, With Error 'Invalid Maximum Heap Size'

(Doc ID 1671399.1)

Last updated on JUNE 26, 2018

Applies to:

Oracle Communications Instant Messaging Server - Version and later
Information in this document applies to any platform.


After tuning the JVM parameters of the iim_server.jvm.options, we are unable to start up Instant Messaging 9u1-04.19 (

When attempting to start Instant Messaging service, the following errors occur :



Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms