1.SYSMAN> SET ENVIRONMENT/NODE=NODE21
      SYSMAN> DISKQUOTA MODIFY /DEVICE=DUA12: [0,0] -
      _SYSMAN> /PERMQUOTA=3000 /OVERDRAFT=300

      The commands in this example edit the entry for UIC [0,0] in
      the quota file on DUA12, which is located on NODE21.

    2.SYSMAN> DISKQUOTA MODIFY /DEVICE=SYS$DISK1 [TTD,DAVIS] -
      _SYSMAN> /PERMQUOTA=900

      This command sets the permanent quota for UIC [TTD,DAVIS] to
      900 blocks, while making no change to the overdraft limit.
      SYSMAN modifies the quota file that is located on disk
      SYS$DISK1 in the current environment.

      If the user name DAVIS has a unique UIC on the system, you can
      enter the following command:

        SYSMAN> DISKQUOTA MODIFY DAVIS/PERMQUOTA=900