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MAXPROCUSER in BPXPRMxx controls the number of concurrent processes a single UID can run. I believe they are looking for the UNLIMITED part that 0 gives. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Steve Horein Sent: Thursday, March 16, 2006 2:36 PM To: [email protected] Subject: UID(0) and concurrent processes Hello listers, While installing an upgrade to a product, the instructions indicate to assign UID(0) to an ID. The product in question involves running a Java server, and the webserver task supporting the Java server likewise has this requirement. When questioning Support for the product, it was mentioned that in Topic 5.4.1 of z/OS V1R6.0 UNIX System Services Planning, bullet 3 explains the reason: "5.4.1 What can superusers do? Superusers can do the following: * Pass all security checks so that the superuser can access any file in the file system. * Manage processes * Have an unlimited number of processes running concurrently. For a started procedure, this is true only if it has a UID of 0. It is not true for a trusted or privileged process with a different UID. * Change identity from one UID to another. * Use setrlimit() to increase any of the system limits for a process. The parent process propagates its UID and TRUSTED or PRIVILEGED attribute to a forked child process. Thus, a UID of 0 is propagated to a forked child." Does this mean that a non UID(0) ID cannot have concurrently running processes? I am not yet at z/OS 1.6, and the command D OMVS,A=ALL from my system shows a number of processes from IDs that do not have a UID assigned at all! Most do have a UID assigned, and most that have concurrent processed do have UID(0). My goal is to have more unique IDs, and utilize either UNIXPRIV or BPX.SUPERUSER. Will I get bit when I move to z/OS 1.6?! Thanks, Steve Horein ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
