Aqua Data Studio: 18.0.0-devi-228
Build #: 51095
Build Date: 2016-Sep-08 07:28:59 PM
Operating Environment: Linux (4.4.0-36-generic, amd64) / UTF-8 / en / IN / Oracle Corporation 1.8.0_72-b15
Memory: Max=704,643,072; Total=455,606,272; Free=249,092,616; CPUs=8
Steps -
Connect to Informix12.10.
Right click on Database -> Select Tools option ->Select 'Schema Script Generator'
You will observe that "Users" and "Roles" are missing in Object Types of Schema Script Generator window.
This issue also observe in ADS-v17