User ID considerations

The user ID of a z/OS® Explorer user must have at least the following attributes:

  • TSO access (with a normal region size).
    Note: A large region size is required for the user ID that runs the Installation Verification Programs (IVPs) because functions requiring a lot of memory (such as Java™) are executed. You should set the region size to 131072 kilobytes (128 megabytes) or higher.
  • An OMVS segment defined to the security system (for example, RACF®), both for the user ID and its default group.
    • The HOME field must refer to a home directory allocated for the user (with READ, WRITE and EXECUTE access).
    • The PROGRAM field in the OMVS segment should be /bin/sh or other valid z/OS UNIX shell, such as /bin/tcsh.
    • The ASSIZEMAX field should not be set, so that system defaults are used.
    • The user ID does not require UID 0.
      Example (command LISTUSER userid NORACF OMVS): 
      USER=userid

OMVS INFORMATION
----------------
UID= 0000003200
HOME= /u/userid
PROGRAM= /bin/sh
CPUTIMEMAX= NONE
ASSIZEMAX= NONE
FILEPROCMAX= NONE
PROCUSERMAX= NONE
THREADSMAX= NONE
MMAPAREAMAX= NONE
    • The user ID’s default group requires a GID.
      Example (command LISTGRP group NORACF OMVS): 
      GROUP group

OMVS INFORMATION
----------------
GID= 0000003243
  • READ and EXECUTE access to the z/OS Explorer installation and configuration directories and files, default /usr/lpp/IBM/zexpl/*, /etc/zexpl/*, and /var/zexpl/*.
  • READ, WRITE, and EXECUTE access to the z/OS Explorer WORKAREA directory, default /var/zexpl/WORKAREA, and user log directory, default /var/zexpl/logs.
  • READ access to the z/OS Explorer installation data sets, default FEK.SFEK*.
  • READ, WRITE, and EXECUTE access to the /tmp directory or a directory referenced in the TMPDIR environment variable.