User ID considerations

The user ID of an RSE API user must have at least the following attributes:

• TSO access (with a normal region size).
• 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 RSE API installation and configuration directories and files, default /usr/lpp/IBM/rseapi/*, /etc/zexpl/*, and /var/zexpl/*.
• READ, WRITE, and EXECUTE access to the RSE API WORK directory, default /var/zexpl/rseapi/rseapi_WORK, and user log directory, default /var/zexpl/logs.
• READ access to the RSE API installation data sets, default HUH.SHUH*.
• READ, WRITE, and EXECUTE access to the /tmp directory or a directory referenced in the TMPDIR environment variable.