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You can join the Windows Insiders Program to get the latest preview builds. To run Linux GUI apps, you should first install the preview driver matching your system below. If you have not already done so, install WSL and set up a user name and password for your Linux distribution. Once your machine has finished rebooting, installation will continue and you will be asked to enter a username and password. This will be your Linux credential for the Ubuntu distribution.
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For screens that have changed since the previous release, the sample screens shown in the following sections represent definitions for a client subsystem in a PQO application.
PQO-specific fields are explained briefly but their use is not described in detail. The following options are initiated from the Activity screen and completed through the selected secondary screens:. The From fields used when defining a PQO service subsystem specify the location of the client subsystem. If you specify a From field, you cannot leave the Subsystem Name field blank.
You can also obtain a list of all of the subsystem classes and subsystem definitions that fit the pattern criteria.
To update the command privileges, select the 2. After your screen entries are read, a list of subsystem names and subsystem classes based on the pattern criteria is displayed. The pattern criteria used for the subsystem name is the value that was specified on the main screen. If any of the subsystems in the list are enqueued by other users then the command privileges for the subsystem cannot be updated.
To refine the list of subsystem classes or subsystem names, enter a new pattern in the Subsystem Name or Subsystem Class field, and press F4 to view the new list.
The maximum number of subsystem classes that may be processed at one time is If the list exceeds , then the following error message is displayed:. To update the command privileges for a particular subsystem class, the command privilege must be set to Y or N in one or more of the subsystem command privilege fields. In addition, the subsystem class must be selected by putting an X in front of the subsystem name and the class name.
You can also update more than one subsystem class at a time by specifying a command privilege of one of the Change all selected columns. If the subsystem name and class are not selected, the command privileges are not updated for that particular subsystem class.
If a record enqueuing conflict occurs during the update process, only a partial update can be performed. If this occurs, you can press F6 DISplay to display the list of subsystem classes that are enqueued and cannot be updated at this time. Command privileges are in effect immediately after they are updated and can be changed if the subsystem is active or not.
You may also deselect particular subsystems or classes on the list by deleting the X that precedes the subsystem or class name. The following table displays the list of PF key options and commands that are alternatives that accomplish the same thing. Commands are used with the Enter key.
Commands shown may be abbreviated to the first three characters, which are capitalized. Command privileges can be changed regardless of whether a subsystem is active or not. The new privileges are in effect immediately once they are changed. Selecting F4 from the Activity screen brings up the Operational Parameters screen. Use it to specify the operating parameters of the subsystem. On this screen, only system managers can modify Account , Privileges , and Start Login privileges fields.
A semi-public subsystem generally has more than one user class. One class is designated as the default see the Subsystem Classes screen. If N the default is specified, only a user having the appropriate privileges, as defined on the Subsystem Classes screen, can issue the START command to open the subsystem. If Y is specified, the subsystem files and groups are available only to users running in the subsystem after the subsystem is started. A subsystem file can be opened by a non-subsystem user if the subsystem is not started.
If any user has the file open when the subsystem is being started, the subsystem start fails. If a group is defined, all member files of the group are locked. No explicit lock is held on the group. If Y is specified, the user is logged out of Model and then logged back in to Model with the subsystem name as the user ID when entering the system.
If N default is specified, the user remains logged in under the same Model account name used before subsystem processing.
If Y is specified, the user is logged out of Model upon leaving the subsystem. If N default is specified and Log user into M is Y , the user's logon, account, and record security ID are restored to the values that were present before entering the subsystem.
The privilege option is expressed as a hexadecimal value within the range of X'00' to X'FF', as described in File security. In the case of automatic login, the starting user's privileges are reset to those set on the Operational Parameters or Subsystem Classes screens prior to continuing execution within the subsystem.
NULL indicates that other privilege specifications are not to be overridden. Enter specifications for subsystem procedures on the Procedure Specifications screen. Subsystem procedures can contain Model commands, requests, continued requests, or sections of SOUL code in any combination.
A procedure containing commands cannot be precompiled. Procedures included in a precompiled procedure are also precompiled. Model automatically includes a subsystem login procedure when a user enters a subsystem. Control must be passed to an initial main menu screen if the subsystem is an Online application. If no error procedure is supplied, Model disconnects the user from the subsystem when an error occurs.
When a user logs in to a subsystem by entering the subsystem name followed by a number of parameters, the parameter input is placed into a global variable that is available to the subsystem procedures. If not defined, the command line is discarded. Command line variables are not destroyed when control is transferred to another subsystem through the subsystem transfer XFER facility. You can transfer control from one procedure to another by using a user-designated global variable.
You can transfer control between subsystems by using the reserved global variable XFER. For more details about transferring control, see Transferring control. When the application is ready to terminate, a subsystem procedure must set the communications global to the exit value. The Subsystem File Use screen defines the files, including the procedure file used by the subsystem.
It is useful to define a subsystem procedure file as a multiple-file procedure group. This will let you modify procedures in the group members without stopping the subsystem because of the following interactions of subsystems and procedure groups:. A consequence of the above-listed factors is that you can copy a procedure from a locked member to a further-to-the-left unlocked member designated for this purpose, modify that procedure copy, then let future APSY INCLUDE commands use that copy instead of the version in the locked member.
Note: Procedures found in unlocked members are always recompiled on each include, imposing a significant performance penalty. The in-core procedure dictionary is built during initialization by searching the locked members of a procedure file group for procedures with the precompiled prefix. If a subsystem procedure is present in more than one locked member of the procedure group, only the first procedure located in a left-to-right search of the locked members is included in the in-core procedure dictionary.
Note: Non-system managers can add files to a subsystem if they have been assigned modify privileges see Administrative Privileges screen. When using a group procedure file, the name specified must correspond to the permanent group. Note that an individual user can create or open a temporary group having the same name as the permanent group defined to the subsystem.
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