As RTM doesn't work at all on 5.2, if you want the replacement to work, then yes, you need to apply it (and license PerfKit).
________________________________ From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Austin, Alyce (CIV) Sent: Thursday, January 18, 2007 5:31 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: Performance Toolkit and VM64152 Hello, I'm installing z/VM 5.2; however, I'm only using RTM on my z/VM 4.4. system. Do I need to apply this fix to 5.2 even though I'm not running PTK on my current system?