8 ensuring you have a recent feedback.dat file – HP BA322 90087 User Manual
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IMPORTANT:
Any system parameters that you modified and did not enter in the
SYS$SYSTEM:MODPARAMS.DAT file are lost during the upgrade. To retain these parameters,
enter their names and the values that you have in use for them in
SYS$SYSTEM:MODPARAMS.DAT. When AUTOGEN runs after the upgrade, it uses the values
in SYS$SYSTEM:MODPARAMS.DAT.
For example, if the current value of GBLPAGES is 30000, and you modified GBLPAGES by 128
pages above the default, add the following line to SYS$SYSTEM:MODPARAMS.DAT:
MIN_GBLPAGES=30128 !Increased by 128 by PLM for product z 12/12/04
AUTOGEN compares the computed value of GBLPAGES with this MIN_ value (30128). If the
computed value is less than the specified MIN_ value, AUTOGEN increases the value of
GBLPAGES to the MIN_ value. Each time AUTOGEN runs, it makes the same comparison and
adjusts the value of GBLPAGES, but never below the minimum indicated by MIN_GBLPAGES.
IMPORTANT:
If you modify system parameters, note the following:
•
In general, you should allow AUTOGEN to calculate system parameters. You can hardcode
values (such as GBLPAGES=value), but doing so overrides AUTOGEN and might not allow
it to set an optimal value based on observed usage.
•
Whenever possible, use MIN_parameter values (such as MIN_GBLPAGES) to set the minimum
value that can be set for a parameter by AUTOGEN. AUTOGEN increases the value if
necessary. It also adjusts related parameters, unless they are hardcoded, in which case
information is provided in the AGEN$PARAMS.REPORT file. Use MAX_parameter values
to set a maximum value when you need to limit a parameter to a known maximum value.
•
Enter numeric values as integers, without commas (for example, 10000). Enter alphabetic
characters in lowercase or uppercase.
•
HP recommends that you include comments in the MODPARAMS.DAT file indicating who
changed the value, when it was done, and why it was done. An exclamation point serves
as a comment starter and can appear anywhere on a line. The following is an example
illustrating the modifications recommended in the preceding bulleted items:
! the following changes made by K.Newcomb on 9/20/03
!
SWAPFILE=0 ! don’t re-size the SWAPFILE on AUTOGEN runs
MIN_gblsections=750 ! required for DECwindows MOTIF
MIN_NPAGEDYN=2750000 ! set npagedyn to a min of 2.75 million
For more information about using AUTOGEN as recommended, see
If your system was upgraded previously, a new SYS$SYSTEM:MODPARAMS.DAT file was
created then. This file has comments and possibly duplicated entries that were created during
that upgrade. If you upgrade again, SYS$SYSTEM:MODPARAMS.DAT can become unnecessarily
large and potentially confusing. HP recommends that you edit and reorganize
SYS$SYSTEM:MODPARAMS.DAT before you upgrade again.
NOTE:
On a cluster system disk, the MODPARAMS.DAT file should exist in
SYS$SYSROOT:[SYSEXE] for each root. You must edit MODPARAMS.DAT as necessary for each
root.
4.8 Ensuring You Have a Recent FEEDBACK.DAT File
Before upgrading your system, HP recommends that you have a recent AGEN$FEEDBACK.DAT
file. This file is in SYS$SPECIFIC:[SYSEXE] (that is, in [SYSx.SYSEXE], where x is the root; for
example, SYS0 or SYS1). In OpenVMS Cluster systems, this file should exist in each node’s
4.8 Ensuring You Have a Recent FEEDBACK.DAT File
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