HP OpenVMS Systems Documentation

$ ACMS/SHOW TASK BASIC/APPLICATION=PAYROLL

This command causes ACMS to search only for the task BASIC in the application PAYROLL.

To get a list of all tasks in an application, name an application with the /APPLICATION qualifier but do not name any tasks. The following command displays information on all active tasks in the application DEBTS:

$ ACMS/SHOW TASK/APPLICATION=DEBTS

Display the tasks running at a specific terminal by using the /DEVICE qualifier. The device name you specify must end with a colon (:). You can also name the null device (NL:) to display information on all remote submitter tasks. For example, the following command displays all tasks running at terminal TTF0:

$ ACMS/SHOW TASK/DEVICE=TTF0:

Include the /USER qualifier with the ACMS/SHOW TASK command to identify all tasks being run by a specific user. For example, the following command displays all tasks being run by user KURASOWA:

$ ACMS/SHOW TASK/USER=KURASOWA

The /IDENTIFIER and /SUBMITTER qualifiers allow you to display information about particular task instances. The /IDENTIFIER qualifier displays information about tasks by ACMS identification code, which is assigned to each task a user selects. Use the /IDENTIFIER qualifier to display information about a single task or about a task called by another task.

The /SUBMITTER qualifier displays tasks by submitter identification code, which is also assigned to each user who signs in to ACMS. Refer to Section 12.6.1 for information on submitter and task identification codes.

When you specify a node name with the /SUBMITTER qualifier but do not specify a task name, ACMS displays all active tasks submitted from that node. For example:

$ ACMS/SHOW TASK/SUBMITTER=WONDER::

Include double colons (::) when specifying a node name.

9.11 Directing TDMS Hardcopy

You can use the ACMS$TSS_HARDCOPY shareable logical name table to direct output from the TDMS hardcopy key (PF4 by default) on a per-user basis.

Normally when you press the hardcopy key while executing a TDMS request, the contents of the current form are copied to a file defined by the TSS$HARDCOPY logical name. However, if you define the ACMS$TSS_HARDCOPY shareable logical name table, you can copy form contents to different files.

ACMS allows you to define multiple locations for different users form outputs by defining a logical name table of user and device names. To specify different hardcopy locations on a per-user basis, define the ACMS$TSS_HARDCOPY shareable logical name table under the system directory name table (LNM$SYSTEM_DIRECTORY). Then define logical names in the ACMS$TSS_HARDCOPY table that specify where the contents of the form are to be copied when you press the hardcopy key.

Logical names in the name table can be either user names or physical device names. When determining where a copy of a form is to be sent, ACMS first translates the device name and then translates the user name.

To define a hardcopy location for a user name, define a logical name for the user name that equates to the name of the file where you wish a copy of the form to be sent. Similarly, for a device name, define a logical name for the physical device name (without any leading underscore or trailing colon). For example:

$ CREATE/NAME_TABLE ACMS$TSS_HARDCOPY/PARENT:LNM$SYSTEM_DIRECTORY
$ DEFINE/TABLE=ACMS$TSS_HARDCOPY SMITH DISK$:[DIRECTORY]SMITH.TXT
$ DEFINE/TABLE=ACMS$TSS_HARDCOPY TTA5 DISK$:[DIRECTORY]TERMINAL1.TXT

When user SMITH presses the hardcopy key, a copy of the current form is placed in the file SMITH.TXT. Similarly, when the person using terminal TTA5 presses the hardcopy key, a copy of the current form is placed in the file TERMINAL1.TXT. If user SMITH is logged into terminal TTA5 then his form is copied to TERMINAL1.TXT instead of SMITH.TXT.

ACMS translates hardcopy locations when the user signs in. If you define a new location for a particular user or device, the user must sign out of ACMS and then sign back in. The logical name table on the submitter node is used to translate a hardcopy location for the user.

See the TDMS documentation for further information on the TSS$HARDCOPY logical name and the hardcopy key.

This chapter describes the ACMS command procedures ACMSPARAM.COM and ACMEXCPAR.COM which you can use to set ACMS system parameters and process quotas. It also describes the variables used as input to ACMSPARAM.COM and ACMEXCPAR.COM, and how to gather and supply variable values to the command procedures through user prompts, the ACMS monitor, and the ACMVARINI.DAT initialization file.

10.1 Introduction

ACMS provides two command procedures to determine ACMS quotas and parameters after an installation or upgrade, or when you want to tune your ACMS system to reflect a changed workload.

• SYS$MANAGER:ACMSPARAM.COM
  This command procedure automates the task of modifying OpenVMS system parameters, ACMS system parameters, and ACMS run-time process quotas.
• SYS$MANAGER:ACMEXCPAR.COM.
  This command procedure modifies Application Execution Controller (EXC) quotas.

These command procedures let you change ACMS parameters in much the same way that the OpenVMS AUTOGEN Utility lets you change OpenVMS system parameters.

ACMS also provides ACMSGEN as a parallel to the OpenVMS SYSGEN Utility for adjustments to ACMS system parameters (see Chapter 11). However, perform such adjustments using ACMSPARAM.COM and ACMEXCPAR.COM rather than ACMSGEN, because the command procedures automatically modify any other parameters that relate to the changed parameters.

Run ACMSPARAM.COM and ACMEXCPAR.COM whenever a change occurs that could affect any parameters or quotas needed by ACMS. Such changes include, but are not limited to, the following:

• Installation of a new version of ACMS.
• Movement of an application from a development node to a production node.
• Addition of users to the ACMS system.
• Addition of an application to the ACMS system.
• Notification by the Software Event Log Utility Program (SWLUP) that a parameter has been exceeded.
• Change in the number of task queues, Queued Task Initiator (QTI) submitters, or task threads per queue.
• Warning from the ACMS monitor that quotas are in danger of being exceeded.

If you do not use ACMSPARAM.COM and ACMEXCPAR.COM, ACMS uses default values for the required quotas and parameters.

Also, although the two command procedures automate the calculation of parameters and quotas, you may still need to make some calculations on your own:

• The two command procedures do not set all of the OpenVMS system parameters required by your ACMS system. There are some OpenVMS system modifications that you might have to perform using OpenVMS AUTOGEN. See OpenVMS System Manager's Manual for details of the AUTOGEN Utility and its commands.
• The command procedure calculations may provide only rough approximations for some parameters and quotas based on variable calculations. To fine-tune your system even further, you may want to calculate the variables yourself, based on your particular system. Then include the variable values in the input files to the two command procedures and run the procedures. See Appendix A for a description of how the ACMSPARAM.COM and ACMEXCPAR.COM determine these values, and how you can determine alternate values for use by the command procedures.

The ACMSPARAM.COM command procedure performs these operations:

• Generates default values for all variables that are used to calculate ACMS system parameters (if values do not already exist).
• Calculates values for OpenVMS system parameters that are affected by ACMS.
• Calculates ACMS system parameters.
• Calculates quotas for the user names under which the ACMS Command Process (CP), ACMS Central Controller (ACC), Terminal Subsystem Controller (TSC), and QTI execute. ACMSPARAM.COM also adds accounts and assigns privileges for these user names in the SYS$SYSTEM:SYSUAF.DAT file.
• Writes the OpenVMS system parameters that need modification to a file. ACMSPARAM.COM gives you the option of automatically updating the OpenVMS AUTOGEN input file MODPARAMS.DAT with values it generates.

ACMSPARAM.COM accepts variable values from user input, the ACMS monitor, or the ACMVARINI.DAT initialization file to set OpenVMS and ACMS system parameters and ACMS process quotas. ACMSPARAM.COM is located in the SYS$MANAGER directory. You need SYSPRV privilege to run it. This section shows how you run ACMSPARAM.COM.

Run ACMSPARAM.COM as follows:

$ SET DEFAULT SYS$MANAGER
$ @ACMSPARAM [phase] [execution-mode]

ACMSPARAM.COM consists of three phases. The three phases are:

• GENVAR---Accepts input from the user, the running system, and ACMS database files for calculating OpenVMS and ACMS system parameters and ACMS run-time process quotas.
• GENPAR---Calculates the parameters and quotas and writes them to a file.
• WRITEPAR---Modifies the appropriate ACMS system parameters and process quotas, and puts new values for OpenVMS system parameters in a file. You can choose to have the new OpenVMS system values automatically placed in the AUTOGEN input file, or you can enter them yourself.

The phase parameter can also take the following input:

• ALL---Runs all three phases consecutively. ALL is the default.
• HELP---You can invoke HELP as the first parameter to ACMSPARAM.COM. If you do not specify a second parameter, you receive a help message for the entire ACMSPARAM.COM procedure. Specify HELP as the first parameter to ACMSPARAM.COM, followed by the name of a single phase as a second parameter to get a help message for that phase only. For example, for help on the GENPAR phase, specify:

  $ @ACMSPARAM HELP GENPAR

  
  You can also get help for a particular variable by specifying the variable name as the second parameter. For example, to get help for the REMOTE_AGENT_CNT variable, specify:

  $ @ACMSPARAM HELP REMOTE_AGENT_CNT

ACMSPARAM.COM runs in one of two execution modes:

• INITIAL mode---Prompts for user input for variables used in calculations.
• FEEDBACK mode---Gathers information from the running ACMS system for variables used in calculations. FEEDBACK mode is the default.

In either INITIAL or FEEDBACK mode, ACMSPARAM.COM also gathers information from the ACMS database files for use in calculations.

Figure 10-1 illustrates the interaction of the three phases of ACMSPARAM.COM. This section describes the details of the three phases of ACMSPARAM.COM.

Before running ACMSPARAM.COM, make sure that all logicals used in application and task definitions and all logicals used to specify the MDB for each user in ACMSUDF.DAT are defined. Otherwise, the procedure may fail.

You can run the entire command procedure or run the phases separately. You will usually want to run the entire command procedure at one time. However, sometimes you may want to run the phases one at a time and check the results before proceeding. For example, you may want to run the phases separately for the following reasons:

• To change intermediate values so that you can increase quotas to allow the application to grow over time without stopping the application.
• If you use task-call-task, after running the GENVAR phase, multiply the value for the TOTAL_TK_INSTANCE_CNT variable by the maximum task-call-task depth to get an accurate value for that variable.

The three phases are described in the following sections and summarized in Table 10-1.

Figure 10-1 Setting System Parameters and Process Quotas with ACMSPARAM.COM

The GENVAR phase creates variables based on values that are supplied as follows:

• By the user, for INITIAL mode.
  Run ACMSPARAM.COM in INITIAL mode after installing or upgrading your ACMS system, or at any other time when your system has not had time to experience a typical workload, for example, when you add a new application or new users. When you use INITIAL mode, the command procedure prompts you for the following variables, if they are not specified in the initialization file ACMVARINI.DAT:

  APPL_NAME
  REMOTE_APPL_NAME
  REMOTE_NODE_CNT
  REMOTE_SUB_CNT
  TERMINAL_CNT
  TERMINAL_PER_CP
  QTI_TASK_THDS
  QTI_QUEUES
  QTI_SUBMITTERS

• By the ACMS$MONITOR.COM command procedure, for FEEDBACK mode.
  Run ACMSPARAM.COM in FEEDBACK mode when:
  • ACMS has run long enough to let the ACMS$MONITOR.COM command procedure monitor an average workload.
  • The ACMS Software Event Log Utility Program (SWLUP) informs you that a parameter was exceeded.
  • ACMS$MONITOR.COM issues a warning that a parameter or quota is in danger of being exceeded.
  FEEDBACK mode uses the data about the running system that was collected by the ACMS$MONITOR.COM procedure, thereby assuring accurate input for parameter and quota calculations for your specific system.
  See Section 10.2.2.1 for details about running the monitor procedure.
  ACMS$MONITOR.COM returns values to ACMS$FEEDBACK.DAT for the same variables for which INITIAL mode prompts, as well as for the following variables:

  ADB_BLKS
  APPL_CNT
  REMOTE_APPL_CNT

  
  Table 10-3 describes each of the variables used in ACMSPARAM.COM.
• By the procedure's reading of .ADB, .TDB, ACMSDDF.DAT, and ACMSUDF.DAT files.
• By editing the ACMVARINI.DAT file .
  Variable values listed in the ACMVARINI.DAT file always take precedence. If you edit ACMVARINI.DAT to include a variable value, ACMSPARAM.COM uses that value as follows:
  • If you use INITIAL mode and ACMVARINI.DAT contains a value for a variable for which INITIAL mode can prompt, INITIAL mode does not prompt for that value.
  • If you use FEEDBACK mode and ACMVARINI.DAT contains a value for a variable for which the ACMS monitor can gather information, the command procedure ignores the information gathered by the monitor for that variable.
  • If ACMVARINI.DAT contains any variable values that can be read by the command procedure from .ADB, .TDB, ACMSDDF.DAT, and ACMSUDF.DAT files, the command procedure uses the values in ACMVARINI.DAT.

Section 10.2.2 describes in detail how to gather the information needed as variable input to ACMSPARAM.COM.

GENVAR places the variable values in ACMSVAR.DAT, the output file for the GENVAR phase.

10.2.1.2 GENPAR Phase of ACMSPARAM.COM

At the beginning of the GENPAR phase, ACMS displays a message explaining the security implications of having multiple accounts with the same UIC. You are then prompted for a unique UIC for each account. If the specified UIC is not a system UIC, the account is granted SYSPRV privilege. The GENPAR phase also takes the variables passed to ACMSVAR.DAT and calculates the system parameters and process quotas needed by the ACMS system. Table 10-3 describes these variables and the parameters and quotas calculated from the variables. Appendix A describes the calculations of several variables that you may want to calculate yourself and provide to ACMSPARAM.COM for even more accurate parameter and quota settings.

10.2.1.3 WRITEPAR Phase of ACMSPARAM.COM

ACMSPARAM.COM calculates values for the OpenVMS SYSGEN parameters affected by ACMS. Those OpenVMS SYSGEN parameters are:

CHANNELCNT
GBLPAGES
GBLPAGFIL
GBLSECTIONS
LOCKIDTBL
VIRTUALPAGECNT

ACMSPARAM.COM also calculates the following OpenVMS SYSGEN parameters, which are used when ACMS creates subprocesses:

PQL_DASTLM
PQL_DBIOLM
PQL_DDIOLM
PQL_DWSEXTENT
PQL_DWSQUOTA

The WRITEPAR phase of ACMSPARAM.COM modifies the ACMS system parameter file and the system user authorization file, sets any ACMSGEN parameters specified, and displays SYS$MANAGER:ACMSYSPAR.DAT. ACMSYSPAR.DAT lists the OpenVMS system parameters that need modification. WRITEPAR allows you to update automatically the AUTOGEN input file SYS$SYSTEM:MODPARAMS.DAT.

ACMSPARAM.COM then reminds you to run AUTOGEN and reboot the system. If you choose not to have ACMSPARAM.COM update MODPARAMS.DAT, ACMSPARAM.COM reminds you to update MODPARAMS.DAT, run AUTOGEN, and reboot the system.

Edit the appended MODPARAMS.DAT before running SYSGEN to combine any duplicate ADD_<system_parameter> statements. ACMSPARAM.COM does not do this automatically. To ensure that this action takes place, the following informational message is displayed:

Remember to check the new SYS$SYSTEM:MODPARAMS.DAT to resolve any
duplicate ADD_parameter entries that occurred due to the appending
of ACMSYSPAR.DAT to MODPARAMS.DAT.

If an account for an ACMS process is created during the WRITEPAR phase, the procedure prompts the user for an account password and unique UIC. The password for the account must be 8 or more characters, cannot contain the name of the ACMS product, and should not be an easily guessed word. To protect against typing errors that are not seen when entering the password, users must reenter the password to verify it. Users have three chances to verify the password. Valid characters for a password are: A through Z, a through z, 0 through 9, $ (dollar sign), and _ (underscore).

See Appendix A for the formulas for calculating these OpenVMS system parameter values. Refer to Chapter 11 for information about how these OpenVMS system parameters affect ACMS components.

Remember, you must reboot your OpenVMS system after you change the values of any nondynamic OpenVMS SYSGEN parameters.

ACMSPARAM.COM requires information from a variety of sources to calculate parameters and quotas. The following section describes the sources and means of collecting that information.