Installation and Upgrade Guide

7.20 Reforming the Shadow Set as Final Postupgrade Backup
If your system disk participates in a volume shadowing environment, re-form the shadow set
again to generate another shadow copy onto the other disks in the set. To do so, follow the
instructions in Section 7.6 (page 118).
7.21 Rebooting Cluster Members (Upgrades Only)
If you are performing a rolling upgrade in an OpenVMS Cluster environment and have completed
all the postupgrade tasks required thus far for your upgraded system disk, reboot each system
that boots from that system disk.
For more information about booting your system, see Appendix A (page 149) for OpenVMS I64
systems.
At this point, your system is ready for general use.
7.22 Running AUTOGEN to Tune the System
When you install or upgrade the OpenVMS operating system, the system executes the
AUTOGEN.COM procedure to set the values of system parameters and the sizes of the page,
swap, and dump files according to the system configuration.
After running your system for at least 24 hours with users or a typical application workload on
the system, run the AUTOGEN.COM procedure again to tune the system properly. Run
AUTOGEN as follows. (In an OpenVMS Cluster, you must follow these steps to run AUTOGEN
on each cluster node.)
1. Run AUTOGEN in feedback mode, examine AGEN$PARAMS.REPORT, and reboot the
system. To run AUTOGEN in feedback mode, use the following command:
$ @SYS$UPDATE:AUTOGEN SAVPARAMS SETPARAMS FEEDBACK
To view AGEN$PARAMS.REPORT on your screen, enter the following command:
$ TYPE SYS$SYSTEM:AGEN$PARAMS.REPORT
You can print this file or examine it using the EDIT/READ_ONLY command.
If the report includes a message similar to the following, you might need to modify the size
of the page, swap, or dump file:
%AUTOGEN-W-DSKSPC, The disk on which DKA0:[SYS0.SYSEXE]PAGEFILE.SYS
resides would be over 95% full if it were modified to hold 20000 blocks.
For more information about AGEN$PARAMS.REPORT, see the HP OpenVMS System
Manager's Manual, Volume 2: Tuning, Monitoring, and Complex Systems.
2. Run AUTOGEN again in feedback mode two work days later and examine
AGEN$PARAMS.REPORT, and then reboot the system. (For information about the
importance of having a current AGEN$FEEDBACK.DAT file, see Section 4.6 (page 83).)
144 After Installing or Upgrading the OpenVMS Operating System