1 PARAMETERS There are several PARAMETERS subcommands. Select the one you want from the choices below. 2 DISABLE 3 CHECKS Bypasses validation of parameter values. SYSMAN parameter validation ensures that the parameters fall within the defined minimum and maximum values specified in the PARAMETERS SET command. Format PARAMETERS DISABLE CHECKS 4 Description The PARAMETERS DISABLE CHECKS command enables you to override minimum and maximum values established for system parameters. SYSMAN does parameter checks by default. If you attempt to set parameter values outside the allowable limits when checks are enabled, the operating system issues an error message. By disabling checks you can set parameter values regardless of the minimum and maximum limits. NOTE Range checks are enabled by default because Compaq suggests that systems operate within these minimum and maximum values. Setting parameters outside these limits can result in system failures or hangs. 4 Example SYSMAN> SET ENVIRONMENT/CLUSTER SYSMAN> SET PROFILE/DEFAULT=SYS$SYSTEM/PRIVILEGES=CMEXEC SYSMAN> PARAMETERS SET MAXPROCESSCNT 10 %SMI-E-OUTRANGE, parameter is out of range SYSMAN> PARAMETERS DISABLE CHECKS SYSMAN> PARAMETERS SET MAXPROCESSCNT 10 In this example, the initial attempt to set MAXPROCESSCNT below the minimum fails because range checks are enabled. However, once range checks are disabled, the PARAMETERS SET MAXPROCESSCNT command succeeds. 2 ENABLE 3 CHECKS Validates all parameter values to ensure that they fall within the defined minimum and maximum values. Because range checks are enabled by default, use PARAMETERS ENABLE CHECKS after entering a PARAMETERS DISABLE CHECKS command. Format PARAMETERS ENABLE CHECKS 4 Example SYSMAN> PARAMETERS DISABLE CHECKS SYSMAN> PARAMETERS SET WSMAX 20 SYSMAN> PARAMETERS ENABLE CHECKS SYSMAN> PARAMETERS SET WSMAX 30 %SMI-E-OUTRANGE, parameter is out of range SYSMAN> PARAMETERS SHOW WSMAX Parameter Name Current Default Minimum Maximum Unit Dynamic WSMAX 2000 1024 60 6400 pages The PARAMETERS ENABLE CHECKS command in this example shows that when range checking is disabled, the system accepts a working set value (WSMAX) of 20. However, once range checking is enabled with the PARAMETERS ENABLE CHECKS command, the system does not accept a WSMAX below the minimum, which is 60. 2 SET Changes the value of a specific parameter in the work area. The PARAMETERS SET command does not modify parameter files, the current system parameter file on disk, or the active system. For information about performing these modifications, see the PARAMETERS WRITE command. Format PARAMETERS SET parameter-name [value] /STARTUP filespec 3 Parameters parameter-name Specifies the name of the parameter to modify. Instead of a name, you can enter a period (.) to change the value of the most recently displayed or the most recently modified parameter. See the PARAMETERS SHOW command for an example of using the period in place of a parameter name. For a list of system parameters and further information about them, use the command HELP PARAMETERS. value Specifies the new value for the parameter. Enclose values for ASCII parameters in quotation marks if they contain embedded spaces or other special characters. Typically the value is an integer or the keyword DEFAULT. The keyword DEFAULT sets the parameter to its default value. The PARAMETERS SHOW command displays the defined minimum, maximum, and default values for the parameter, which are required unless range checking is disabled with the command PARAMETERS DISABLE CHECKS. 3 Qualifiers /STARTUP /STARTUP filespec Sets the name of the site-independent startup procedure to the given file specification. A file specification has a maximum length of 31 characters. The initial startup command procedure is SYS$SYSTEM:STARTUP.COM. 3 Examples 1.SYSMAN> PARAMETERS SET PFCDEFAULT 20 This command assigns a value of 20 to the PFCDEFAULT parameter. 2.SYSMAN> PARAMETERS SET GBLSECTIONS DEFAULT This command assigns the default value (40) to the GBLSECTIONS parameter. 3.SYSMAN> PARAMETERS SET/STARTUP SYS$SYSTEM:XSTARTUP.COM This command assigns SYS$SYSTEM:XSTARTUP.COM as the current site-independent startup command procedure. 2 SHOW Displays the value of a parameter or a group of parameters in the work area. In addition, the command shows the minimum, maximum, and default values of a parameter and its unit of measure. Format PARAMETERS SHOW [parameter-name] 3 Parameter parameter-name Specifies the name of a parameter or a period (.). A period is interpreted as a request for the parameter specified in the last PARAMETERS SET or PARAMETERS SHOW command. The parameter name can be abbreviated, but the abbreviation must be unique because SYSMAN selects the first parameter that matches. 3 Qualifiers /ACP Displays all Files-11 ACP parameters. /ALL Displays the values of all active parameters. /CLUSTER Displays all parameters specific to clusters. /DYNAMIC Displays all parameters that would be in effect immediately after you enter a PARAMETERS WRITE ACTIVE command. /GEN Displays all general parameters. /HEX Displays numeric parameters in hexadecimal rather than decimal radix. Specify the /HEX system parameter name or the parameter type. If you specify the /HEX qualifier with the /NAMES qualifier, /HEX is ignored. /JOB Displays all job controller parameters. /LGI Displays all LOGIN security control parameters. /MAJOR Displays the most important parameters. /MULTIPROCESSING Displays parameters specific to multiprocessing. /NAMES Displays only parameter names. You can combine other qualifiers with this one. /OUTPUT Directs output to the specified file rather than SYS$OUTPUT. Without a file specification, the output goes to SYSMAN.LIS in the current directory. /PAUSE Controls the rate at which the system displays information about parameters. /PQL Displays the parameters for all default process quotas. /RMS Displays all parameters specific to OpenVMS Record Management Services (RMS). /SCS Displays all parameters specific to OpenVMS Cluster System Communications Services. /SPECIAL Displays all special control parameters. /STARTUP Displays the name of the site-independent startup procedure. /SYS Displays all active system parameters. /TTY Displays all parameters for terminal drivers. 3 Description SYSMAN displays parameters in decimal unless you specify the /HEX qualifier. ASCII values are always displayed in ASCII. Abbreviations for parameter names must be unique because SYSMAN displays the first parameter matching the abbreviation. Ambiguity checks do not occur. For example, a specification of PARAMETERS SHOW GBL displays the GBLSECTIONS parameter. To display the GBLPAGFIL parameter, you must specify PARAMETERS SHOW GBLPAGF to avoid displaying the GBLPAGES parameter. You can use a period (.) to indicate that you want to work with the system parameter that you specified in the last PARAMETERS SET or PARAMETERS SHOW command. 3 Examples 1.SYSMAN> PARAMETERS SHOW GBLSECTIONS Parameter Name Current Default Minimum Maximum Unit Dynamic GBLSECTIONS 100 40 20 -1 Sections SYSMAN> PARAMETERS SET . 110 SYSMAN> PARAMETERS SHOW . Parameter Name Current Default Minimum Maximum Unit Dynamic GBLSECTIONS 110 40 20 -1 Sections In this example, the user first displays the values of the GBLSECTIONS parameter and then refers to the parameter with a period to set its current value to 110. The next PARAMETERS SHOW command also uses the period notation to obtain confirmation that the change occurred. 2.SYSMAN> PARAMETERS SHOW/ACP This command produces output similar to the following example: Parameters in use: Active Parameter Name Current Default Minimum Maximum Unit Dynamic ACP_MULTIPLE 0 1 0 1 Boolean D ACP_SHARE 1 1 0 1 Boolean ACP_MAPCACHE 52 8 1 -1 Pages D ACP_HDRCACHE 138 128 2 -1 Pages D ACP_DIRCACHE 138 80 2 -1 Pages D ACP_DINDXCACHE 37 25 2 -1 Pages D ACP_WORKSET 0 0 0 -1 Pages D ACP_FIDCACHE 64 64 0 -1 File-Ids D ACP_EXTCACHE 64 64 0 -1 Extents D ACP_EXTLIMIT 300 300 0 1000 Percent/10 D ACP_QUOCACHE 130 64 0 -1 Users D ACP_SYSACC 4 8 0 -1 Directories D ACP_MAXREAD 32 32 1 64 Blocks D ACP_WINDOW 7 7 1 -1 Pointers D ACP_WRITEBACK 1 1 0 1 Boolean D ACP_DATACHECK 2 2 0 3 Bit-mask D ACP_BASEPRIO 8 8 4 31 Priority D ACP_SWAPFLGS 14 15 0 15 Bit-mask D ACP_XQP_RES 1 1 0 1 Boolean ACP_REBLDSYS 0 1 0 1 Boolean 3.SYSMAN> PARAMETERS SHOW/ACP/HEX This command produces a hexadecimal display of the values of the ACP system parameters. Parameters in use: Active Parameter Name Current Default Minimum Maximum Unit Dynamic ACP_MULTIPLE 00000000 00000001 00000000 00000001 Boolean D ACP_SHARE 00000001 00000001 00000000 00000001 Boolean ACP_MAPCACHE 00000034 00000008 00000001 FFFFFFFF Pages D ACP_HDRCACHE 0000008A 00000080 00000002 FFFFFFFF Pages D ACP_DIRCACHE 0000008A 00000050 00000002 FFFFFFFF Pages D ACP_DNDXCACHE 00000025 00000019 00000002 FFFFFFFF Pages D ACP_WORKSET 00000000 00000000 00000000 FFFFFFFF Pages D ACP_FIDCACHE 00000040 00000040 00000000 FFFFFFFF File-Ids D ACP_EXTCACHE 00000040 00000040 00000000 FFFFFFFF Extents D ACP_EXTLIMIT 0000012C 0000012C 00000000 000003E8 Percent/10 D ACP_QUOCACHE 00000082 00000040 00000000 FFFFFFFF Users D ACP_SYSACC 00000004 00000008 00000000 FFFFFFFF Directories D ACP_MAXREAD 00000020 00000020 00000001 00000040 Blocks D ACP_WINDOW 00000007 00000007 00000001 FFFFFFFF Pointers D ACP_WRITEBACK 00000001 00000001 00000000 00000001 Boolean D ACP_DATACHECK 00000002 00000002 00000000 00000003 Bit-mask D ACP_BASEPRIO 00000008 00000008 00000004 0000001F Priority D ACP_SWAPFLGS 0000000E 0000000F 00000000 0000000F Bit-mask D ACP_XQP_RES 00000001 00000001 00000000 00000001 Boolean ACP_REBLDSYS 00000000 00000001 00000000 00000001 Boolean 4.SYSMAN> PARAMETERS SHOW/STARTUP Startup command file = SYS$SYSTEM:STARTUP.COM This command displays the name of the site-independent startup command procedure. SYSMAN> PARAMETERS SHOW/PAUSE MAXPROCESSCNT Node EXPERT: Parameters in use: ACTIVE Parameter Name Current Default Minimum Maximum Unit Dynamic -------------- ------- ------- ------- ------- ---- ------- MAXPROCESSCNT 160 32 12 8192 Processes Press return to continue Node MODERN: Parameters in use: ACTIVE Parameter Name Current Default Minimum Maximum Unit Dynamic -------------- ------- ------- ------- ------- ---- ------- MAXPROCESSCNT 157 32 12 8192 Processes Press return to continue Node IMPOSE: Parameters in use: ACTIVE Parameter Name Current Default Minimum Maximum Unit Dynamic -------------- ------- ------- ------- ------- ---- ------- MAXPROCESSCNT 50 32 12 8192 Processes Press return to continue . . The command in this example allows you to control the rate at which the information is displayed. 2 USE Reads a set of system parameters into the work area for display or modification. Format PARAMETERS USE source 3 Parameter source The source of a system parameter file for data to be read into the work area. The source can be any of the following items: ACTIVE Read parameters from memory. When you invoke SYSMAN, active values are in effect. CURRENT Read parameters from the default system parameter file, which is the source for parameters when you boot the system. Using the current parameters requires read (R) access to the system parameters file. o On Alpha systems, the file that contains current parameters is SYS$SYSTEM:ALPHAVMSSYS.PAR. o On VAX systems, the file that contains current parameters is SYS$SYSTEM:VAXVMSSYS.PAR. filespec Read parameters from a previously created system parameter file. The default file type is .PAR. You need read access to the file. DEFAULT Read a parameter set containing the default values for all parameters. These values are supplied with the operating system. 3 Description Depending on the source you enter with the command, PARAMETERS USE activates the parameter values: o Stored in memory (ACTIVE) o Stored in the default boot parameter file (CURRENT) o From another file (filespec) o From the system default values (DEFAULT) 3 Example SYSMAN> PARAMETERS USE DEFAULT SYSMAN> SET STARTUP_P1 "MIN" The first command activates the default parameter values that are supplied with the operating system. The second command sets the STARTUP_P1 system parameter to "minimum." This avoids starting all layered products on a system that is not tuned for them, which might cause the system to hang. 2 WRITE Writes the contents of the work area to memory, to disk, or to a file, depending on the destination that you specify. Format PARAMETERS WRITE destination 3 Parameter destination The destination of a new parameter file can be any of the following ones: ACTIVE Write parameters to memory. Using the ACTIVE parameter requires CMKRNL privilege. CURRENT Write parameters to the system parameters file, which contains the current parameters on disk. Using the current parameter requires write (W) access to the system parameters file. o On Alpha systems, the file that contains current parameters is SYS$SYSTEM:ALPHAVMSSYS.PAR. o On VAX systems, the file that contains current parameters is SYS$SYSTEM:VAXVMSSYS.PAR. filespec Write parameters to a file. The default file type is .PAR and you need write access to the file. 3 Description The PARAMETERS WRITE command writes the system parameter values and the name of the site-independent startup command procedure from the work area to the active system in memory, the current system parameter file on disk, or your choice of a parameter file. You can write only dynamic parameter values to the active system. Both the PARAMETERS WRITE ACTIVE and PARAMETERS WRITE CURRENT commands send a message to OPCOM to record the event. 3 Examples 1.SYSMAN> PARAMETERS WRITE SYS$SYSTEM:SPECIAL This command creates a new parameter specification file. 2.SYSMAN> PARAMETERS WRITE CURRENT This command modifies the current system parameter file on disk (SYS$SYSTEM:ALPHAVMSSYS.PAR). !***************************************************************************