The following is an example of changing SYSGEN parameters. Since NON-DYNAMIC parameters are being changed, the USE CURRENT command must be specified. Each parameter should be shown first, and then changed.
Note
The SYSGEN parameter changes can be made either directly through the OpenVMS SYSGEN utility, or by making changes to MODPARAMS.DAT and then using AUTOGEN. For simplicity, the examples in this guide show using SYSGEN directly.
Example A-1 Changing Sysgen Parameters
APPLICATION SSYSTEM OpenVMS Version 5.4-2
Username: SYSTEM
Password: (the system password)
$ SET DEFAULT SYS$SYSTEM
$ RUN SYSGEN
SYSGEN> USE CURRENT
SYSGEN> SHOW SYSMWCNT
Parameter Name Current Default Minimum Maximum
SYSMWCNT 800 250 40 16384
SYSGEN> SET SYSMWCNT 1000
SYSGEN> SHOW IRPCOUNT
Parameter Name Current Default Minimum Maximum
IRPCOUNT 300 60 0 32768
SYSGEN> SHOW PAGEDYN
Parameter Name Current Default Minimum Maximum
PAGEDYN 300000 190000 10240 -1
SYSGEN> SET PAGEDYN 500000
.
. SHOW and SET as necessary for each required parameter
.
If the swapfiles or pagefiles are too small, use the following commands: Example A-2 Changing PAGE and SWAP File Size
SYSGEN> CREATE SWAPFILE/SIZE = value
SYSGEN> CREATE PAGEFILE/SIZE = value
.
. Where value = the observed required size in disk blocks
.
SYSGEN> WRITE CURRENT
SYSGEN> EXIT
$ log
SYSTEM logged out at 01-AUG-1987 09:50:59.95