CA Mainframe Application Tuner

CA Mainframe Application Tuner enhancement available - Residence Mode 64 bit (RMODE64)

By Petr.Klomfar posted 05-28-2018 07:09 AM


On behalf of the CA Mainframe Application Tuner development team, for CA MAT V12  you can now obtain RMODE64 enhancement via our maintenance stream.  Please use following link: SO01740   


What is RMODE64:

  • RMODE64 = Residence Mode for 64 bit. With z/OS 2.3 you can use above the bar virtual storage for application executable code. CA MAT V12 now supports data collection and reporting for such applications.


NOTE: There is no action or any further settings required beyond the PTF installation to your environment in order to utilize this feature. 



For more information about CA Mainframe Application Tuner V12, see the release notes in CA MAT V12 documentation



Thank you for choosing CA Mainframe Application Tuner to improve your application performance. Together with Product Manager Ekaterina Tumanova (, we are always interested in your thoughts and feedback . Feel free to contact us directly.


Petr Klomfar (

Product Owner of CA MAT