Darya.zelenina: recreated from System parameters; link added

2019-04-08T12:42:25Z

recreated from System parameters; link added

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'''System parameters''' are variables that let you control the way your OpenVMS system functions. Your distribution kit provides default values for system parameters to allow you to boot any supported configuration. When your system is installed or upgraded, [[AUTOGEN]] executes to evaluate your hardware configuration, estimate typical work loads, and adjust the values of system parameters as needed. Each system parameter has associated minimum and maximum values that define the scope of allowable values.

There are dynamic and static system parameters. Dynamic system parameters can be changed on a running system; static system parameters need a reboot to become effective.

The OpenVMS System Management Utilities Reference Manual lists and describes each system parameter.

There are several ways to look up the value of a parameter on your system:
* use the [[SYSGEN]] utility. You can also use it to modify system parameters.
* use the [[F$GETSYI()]] lexical function (use the name of the specific parameter as the item)

=Categories=

The following categories of system parameters exist:

{| class="wikitable"
|-
! Category !! Description
|-
| [[ACP parameters|ACP]] || Parameters associated with file system caches and Files-11 ancillary control processes (ACPs)
|-
| [[CLUSTER parameters|CLUSTER]] || Parameters that affect OpenVMS Cluster operation
|-
| [[JOB parameters|JOB]] || Job control parameters
|-
| [[LGI parameters|LGI]] || Login security parameters
|-
| [[PQL parameters|PQL]]|| Parameters associated with process creation limits and quotas
|-
| [[RMSparameters|RMS]] || Parameters associated with OpenVMS Record Management Services (RMS)
|-
| [[SCS parameters|SCS]] || Parameters that control System Communications Services (SCS) and port driver operation. The parameters that affect SCS operation have the prefix SCS. The parameters that affect the CI780/CI750 port driver have the prefix PA
|-
| [[SPECIAL parameters|SPECIAL]]|| Special parameters used by VSI. Change these parameters only if recommended by VSI personnel, or if specifically instructed in the installation guide or release notes of an VSI layered product
|-
| [[SYS parameters|SYS]] || Parameters that affect overall system operation
|-
| [[TTY parameters|TTY]] || Parameters associated with terminal behavior
|}

[[Category:System Parameters]]

System Parameters - Revision history

Darya.zelenina: recreated from System parameters; link added