Changing certain system values (QSYSLIBL, QUSRLIBL, QALWOBJRST, or QVFYOBJRST)

 

To ensure that your i5/OS® installation runs smoothly, check the system library list (QSYSLIBL), user library list (QUSRLIBL), allow restore of security sensitive objects (QALWOBJRST), and verify object signatures during restore (QVFYOBJRST) system values. Follow these steps:

  1. Type the Work with System Values command, WRKSYSVAL, and press Enter. The Work with System Values display appears.

  2. Type 2 (Change) in the Option column next to the system value you want and press Enter. The Change System Value display appears.

  3. Check the system values as described in table that follows.

  4. Write down the current values of QALWOBJRST and QVFYOBJRST plus any library names that are shown for QSYSLIBL and QUSRLIBL.

System value
Action to take
System library list (QSYSLIBL)1 Current libraries: ____________________ ____________________ ____________________ ____________________ ____________________

User library list (QUSRLIBL)1 Current libraries: ____________________ ____________________ ____________________ ____________________ ____________________

If you have any of the following libraries, use the spacebar to delete the library from the library list.

  • Remove any licensed program libraries.

  • Remove any secondary language libraries (QSYS29xx).

Do not remove QSYS, QGPL, QUSRSYS, QTEMP, or QSYS2.

Allow restore of security sensitive objects (QALWOBJRST)2 Current value: ____________________ Change the value to *ALL before installing the operating system or licensed programs. If you have previously locked this system value, go to SST and unlock it before you upgrade. Locking and unlocking security-related system values describes how to do this.
Verify object signatures during restore (QVFYOBJRST)3 Current value: ____________________ If this system value is set to either 4 or 5, change this value to 3 before you install the new release. If you have previously locked this system value, go to SST and unlock it before you upgrade. Locking and unlocking security-related system values describes how to do this.
Notes:

  1. Having licensed program libraries or secondary language libraries in these library lists can cause errors when you install or delete software.

  2. The Allow restore of security sensitive objects (QALWOBJRST) system value specifies whether or not objects with security-sensitive attributes can be restored. It is important to set the value to *ALL before performing the following system activities:

    • Installing a new release of the operating system.

    • Installing new licensed programs.

    • Applying program temporary fixes (PTFs).

    • Recovering your system.
    These activities can fail if the value of QALWOBJRST is not set to *ALL. To ensure system security, return the QALWOBJRST value to your normal setting after completing the system activity.

  3. After you have upgraded the operating system and option 34, you can return the QVFYOBJRST system value to either 4 or 5.

Note that if you want the same values after the installation process is completed, reset the system values. This step is included in the final checklist after you upgrade.

You can also use iSeries™ Navigator to set your system values. For more information, see system values to find out how to use and access the system values from iSeries Navigator.

 

Parent topic:

Working with critical system values before you install software