Document revision date: 30 March 2001

Chapter 15
15	Managing System Parameters
15.1	Understanding System Parameters
15.1.1	Default, Current, and Active Values
15.1.2	Pages and Pagelets
15.2	Recommended Method for Changing Parameter Values
15.3	Converting Your Customized Parameter Settings for Use with AUTOGEN
15.4	Understanding the AUTOGEN Command Procedure
15.4.1	AUTOGEN Feedback
15.4.2	Feedback Report (AGEN$PARAMS.REPORT)
15.4.3	AUTOGEN Phases
15.4.4	AUTOGEN Parameter File (MODPARAMS.DAT)
15.5	Modifying System Parameters with AUTOGEN
15.5.1	Controlling AUTOGEN's Parameter Settings with MODPARAMS.DAT
15.5.1.1	Increasing a Value with the ADD_ Prefix
15.5.1.2	Specifying a Minimum Value with the MIN_ Prefix
15.5.1.3	Specifying a Maximum Value with the MAX_ Prefix
15.5.1.4	Specifying an Absolute Value
15.5.1.5	Defining the Number of VAXcluster Nodes (VAX Only)
15.5.1.6	Defining the Number of Ethernet Adapters (VAX Only)
15.5.1.7	Presetting Parameter Values Before Adding Memory (VAX Only)
15.5.1.8	Overriding Parameters Related to DECnet
15.5.1.9	Values Set for NPAGEDYN and NPAGEVIR
15.5.2	Specifying a Minimum Required Age for Feedback (VAX Only)
15.5.3	Including an External Parameter File in MODPARAMS.DAT
15.5.4	Turning Off Logging of DCL Statements
15.6	Automating AUTOGEN Reports
15.6.1	Changing Parameter Values After Reviewing AUTOGEN Reports
15.7	Managing System Parameters with SYSMAN
15.7.1	Understanding Parameter Values and SYSMAN
15.7.2	Showing Parameter Values with SYSMAN
15.7.3	Modifying a Parameter File with SYSMAN
15.7.4	Modifying Active Values with SYSMAN
15.8	Managing System Parameters with SYSGEN
15.8.1	Understanding Parameter Values and SYSGEN
15.8.2	Showing Parameter Values with SYSGEN
15.8.3	Modifying the System Parameter File with SYSGEN
15.8.4	Modifying Active Values with SYSGEN
15.8.5	Creating a New Parameter File with SYSGEN
15.9	Modifying System Parameters with a Conversational Boot
15.10	Tuning BAP System Parameters
Chapter 16
16	Managing Page, Swap, and Dump Files
16.1	Understanding Dump Files
16.1.1	Using the Page File to Store System Crash Dumps
16.1.2	Understanding Types of System Dumps
16.2	Understanding Page and Swap Files
16.3	Displaying Information About Page and Swap Files
16.4	Manually Calculating Appropriate Sizes for Dump, Page, and Swap Files
16.4.1	Calculating System Dump File Size
16.4.2	Calculating Error Log Dump File Size
16.4.3	Calculating Page File Size
16.4.3.1	Representing Page File Size
16.4.3.2	Monitoring Page File Usage
16.4.3.3	Limiting Page File Space
16.4.4	Calculating Swap File Size
16.4.4.1	Representing Swap File Size
16.4.4.2	Monitoring Swap File Usage
16.5	Minimizing System Dump File Size When Disk Space Is Insufficient
16.5.1	Understanding the Order of Information in a Selective System Dump
16.5.2	Fine-Tuning the Order That Processes Are Written in Selective System Dumps (Alpha Only)
16.6	Writing the System Dump File to the System Disk
16.6.1	System Dump to System Disk on Alpha
16.6.2	System Dump to System Disk on VAX
16.7	Writing the System Dump File to an Alternate Disk
16.7.1	DOSD Requirements on Alpha Systems
16.7.2	DOSD Requirements on VAX Systems
16.8	Using SDA to Analyze the Contents of a Crash Dump
16.9	Using SDA CLUE Commands to Analyze Crash Dump Files (Alpha Only)
16.9.1	Understanding CLUE (Alpha Only)
16.9.2	Displaying Data Using SDA CLUE Commands (Alpha Only)
16.9.3	Using SDA CLUE with Dump Off System Disk (Alpha Only)
16.10	Using CLUE to Obtain Historical Information About Crash Dumps (VAX Only)
16.10.1	Understanding CLUE (VAX Only)
16.10.2	Displaying Data Using CLUE (VAX Only)
16.11	Saving the Contents of the System Dump File After a System Failure
16.12	Copying System Dump Files to Tape or Disk
16.13	Freeing Dump Information from the Page File
16.13.1	Freeing Dump Information on VAX and Alpha Systems
16.13.2	Usage Notes for Freeing Information on VAX and Alpha Systems
16.14	Installing Page and Swap Files
16.14.1	Installing Interactively
16.14.2	Installing in SYPAGSWPFILES.COM
16.15	Removing Page, Swap, and Dump Files
16.16	Creating and Modifying Page, Swap, and Dump Files
16.16.1	Using AUTOGEN (Recommended Method)
16.16.1.1	Controlling the Location of System Page, Swap, and Dump Files
16.16.1.2	Controlling the Size of System Page, Swap, and Dump Files in MODPARAMS.DAT
16.16.2	Using SWAPFILES.COM
16.16.3	Using SYSGEN
16.17	Understanding Process Dumps
16.17.1	Understanding Privileged Users and Access to Process Dumps (Alpha Only)
16.17.2	Granting Access to Process Dumps (Alpha Only)
16.17.3	Restricting Access to Process Dumps (Alpha Only)

	privacy and legal statement
6017PRO_CONTENTS_006.HTML