D Advanced Tuning of the Daemon

The daemon configuration is managed using Oracle Studio. Daemon configuration is divided into the following groups:

Daemon Control
Daemon Logging
Daemon Security
Workspaces

Daemon Control

Use the Daemon Control tab to define various daemon control options. The Daemon Control tab is accessed as follows:.

From the Start menu, Programs, Oracle, and then select Studio.
Select the computer defined in "Setting Up the IBM OS/390 or z/OS Platform in Oracle Studio".
Right-click the computer and select Open Runtime Perspective.
Right-click the required daemon in the Runtime Explorer and select Edit Daemon Configuration. The Daemon Control tab is displayed.

After making changes to the daemon, right-click the daemon and select Reload Configuration.

Note:

You can also change daemon settings using the Configuration Explorer, by selecting a computer and drilling-down the list until the daemon is displayed. Right-click the daemon and select Edit Daemon.

Changes made to the daemon configuration are only implemented after the configuration is reloaded using the Reload Configuration option in the Runtime Manager.

The Daemon Control tab is shown in the following figure:

Description of the illustration dmncnt.gif

The Daemon Control tab comprises fields, as described in the following table:

Field	Description
Automatically recover from failure	The daemon restarts automatically if it fails for any reason (any error that causes the daemon process to terminate, such as network process lost or the CPU running the daemon malfunctions and the backup daemon is defined on another CPU). All available and unconnected servers are terminated and any connected servers are marked and terminated on release. Also the backup starts a backup for itself. The backup appends a new log file to the log of the original daemon, adding a line indicating that a backup daemon was started.
Maximum XML request size	The maximum number of bytes that the daemon handles for an XML document.
Maximum XML in memory	The maximum amount of space reserved for the XML in memory.
Default language	The language that the daemon supports. This setting is used when working with a client with a code page different from the server code page.
Call timeout	The timeout period for short calls for all daemons. The definition of a short call is a call that should be completed in a few seconds. For example, most calls to a database such as DESCRIBE should be completed in a few seconds as opposed to call like a GETROWS call, which can take a long time. In heavily loaded or otherwise slow systems, even short calls such as calls to open a file, may take a significant amount of time. If a short call takes more than the specified time to complete, then the connection is stopped. The default value for this parameter is 60 seconds. Values of less than 60 seconds are considered to be 60 seconds. Specifying the timeout in a workspace overrides the value set in this field for that workspace.
Connect timeout	The time the client waits for a daemon server to start. If the daemon server does not start within this period, then the client is notified that the server did not respond. The value specified for this parameter serves as the default timeout for all the workspaces listed in the daemon configuration. The default value for this parameter is 60 seconds. Specifying the timeout in a workspace overrides the value set in this field for that workspace.
Client idle timeout	The maximum amount of time any daemon client may be idle before the connection with the server is closed. Specifying the timeout in a Workspace overrides this setting for that workspace.

Daemon Logging

Use the Daemon Logging tab to define the daemon log file settings, the log file structure and the location where the log is saved. In addition, use it to define the data that is logged and traced in the file.

The Daemon Logging tab is accessed as follows:

From the Start menu, select Start, Programs, Oracle, and then select Studio.
Select the computer defined in "Setting Up the IBM OS/390 or z/OS Platform in Oracle Studio".
Right-click the computer and select Open Runtime Perspective.
Right-click the daemon in the Runtime Explorer and select Edit Daemon Configuration.
Click the Daemon Logging tab.

After making changes to the daemon, right-click the daemon and select Reload Configuration.

Note:

You can also change daemon settings using the Configuration Explorer, by selecting a computer and drilling-down the list until the daemon is displayed. Right-click the daemon and select Edit Daemon.

Changes made to the daemon configuration in this way are not implemented. They are only implemented after the configuration is reloaded using the Reload Configuration option in the Runtime Manager.

Right-click the daemon and select End Unused Servers. Any servers in the connection pool are closed and new servers start with the new configuration.

The Daemon Logging tab is shown in the following figure:

Description of the illustration dmnlog.gif

The Daemon Logging tab comprises fields, as listed in the following table:

Field	Description
Daemon log file location	Specifies the daemon produces its log data. The full path must be specified.
Logging options	Specifies what tracing is performed.
Client requests for server	Logs client requests for server activations; this provides logging of the process IDs of the started servers along with the location of the log files.
Administration requests for daemon	Logs all of the administration requests for the daemon.
Daemon operations	Logs all of the daemon operations.
Daemon logins	Logs daemon logins.
Daemon RPC function calls	Logs all daemon RPC function calls.
Daemon internal operations	Logs daemon internal operations.
Log trace information	Logs low-level RPC operations.
Display host and client domain name	Specifies whether the client host and domain name are logged rather than the client IP address. The default is false.
Trace options	Specifies the type of tracing being performed.
No timeout	Disables the standard RPC timeouts, setting them to a long duration (approximately an hour) to facilitate debugging.
Call trace	Generates a message in the server log file for each RPC function called. This is useful for troubleshooting the server.
RPC trace	Enables debugging messages on the server.
Sockets	Generates a message in the server log file for each socket operation.
Extended RPC trace	Generates a verbose message in the server log file for each low-level RPC function called. This is useful for troubleshooting the server.
System trace	Generates system-specific tracing of various operations.
Timing	Generates a timestamp for every entry to the server log file.
Server log filename format	Defines the name and location of the server log file. The field must specify the full path name. If no directory information is provided for the log file, then it will be located in the login directory of the account running Oracle Connect workstation.

The following tokens can appear in the log file template and will be replaced accordingly:

%A: workspace name
%D: date (yymmdd)
%I: instance number of the given workspace server
%L: server account's login directory
%P: server's process ID
%T: time (hhmmss)
%U: server's account name (username)

For example, %L/server_%A%I.log may produce a log file such as: /usr/smith/server_sales15.log. The default log file template is %L/server_%A%I.log.

Daemon Security

The Daemon Security tab is used to:

Grant administration rights for the daemon
Determine access to the computer

The Daemon Security tab is accessed as follows:

From the Start menu, select Start, Programs, Oracle, and then select Studio.
Select the computer defined in "Setting Up the IBM OS/390 or z/OS Platform in Oracle Studio".
Right-click the computer and select Open Runtime Perspective.
Right-click the daemon in the Runtime Explorer and select Edit Daemon Configuration.
Click the Daemon Security tab.

After making changes to the daemon, right-click the daemon and select Reload Configuration.

Note:

You can also change daemon settings using the Configuration Explorer, by selecting a computer and drilling-down the list until the daemon is displayed. Right-click the daemon and select Edit Daemon.

Changes made to the daemon configuration in this way are not implemented. They are only implemented after the configuration is reloaded using the Reload Configuration option in the Runtime Manager.

Right-click the daemon and select End Unused Servers. Any servers in the connection pool are closed and new servers start with the new configuration.

The Daemon Security tab is shown in the following figure:

Description of the illustration dmnsec.gif

The Daemon Security tab comprises fields, as listed in the following table:

Field	Description
Administrators privileges	Identifies the users (accounts) allowed to perform administrative tasks (tasks that require administrative login).
All users	Enables all users to access the daemon and change the settings.
Selected users only	The names of users (accounts) and groups that can be administrators.^Foot 1 If a user is not specified, the account from which the daemon was started is considered the administrator. Note that the daemon does not require the user to log in to the account on the system, but to log in to the daemon using the account name and password.
Machine access	Manages access to the computer.
Allow anonymous login	Whether workspaces allow anonymous logins (without user name/password entries). For the optimal level of security, keep this option unchecked and define a username for the Daemon Administrators parameter. If unchecked, then no workspace can have an anonymous client. If checked, then a particular workspace allows anonymous clients.
Cached password	Enables login passwords to be cached. This enhances performance by reducing login times for future connections from the same client in a session.
Encryption methods	The encryption method being used to send information across the network. The default is an asterisk (*), meaning that all methods are acceptable. If an encryption method is specified, it must be used. The RC4 and DES3 protocols are currently supported.

^Footnote 1The name is prefixed with '@', to utilize the operating system GROUP feature.

Workspaces

A daemon can include a number of workspaces. A workspace defines the server processes and environment that are used for the communication between the client and the server for the duration of the client request. Each workspace has its own definition. The workspace definition is divided into the following groups:

WS Info.
WS Server
WS Logging
WS Security
WS Governing: This tab is not applicable for use with OracleAS Adapter for VSAM.

WS Info.

Using the WS Info. tab you specify the features that control the operation of the workspace: the server type, the command procedure used to start the workspace and the binding configuration associated with this workspace.

The WS Info. tab is accessed as follows:

From the Start menu, select Start, Programs, Oracle, and then select Studio.
Select the computer defined in "Setting Up the IBM OS/390 or z/OS Platform in Oracle Studio".
Right-click the computer and select Open Runtime Perspective.
Expand the Daemon node to display the workspaces in the Runtime Explorer.
Right-click the workspace and select Edit Workspace Configuration. The WS Info. tab opens.

After making changes to the workspace, right-click the daemon and select Reload Configuration.

Note:

You can also change daemon settings using the Configuration Explorer, by selecting a computer and drilling-down the list until the daemon is displayed. Right-click the daemon and select Edit Daemon.

Changes made to the daemon configuration in this way are not implemented. They are only implemented after the configuration is reloaded using the Reload Configuration option in the Runtime Manager.

Right-click the daemon and select End Unused Servers. Any servers in the connection pool are closed and new servers start with the new configuration.

The WS Info. tab is shown in the following figure:

Description of the illustration wsinfo.gif

The WS Info. tab coprises fields, as listed in the following table:

Field	Description
Workspace name	The name used to identify the workspace. Note: The default configuration includes the default Navigator Workspace. This workspace is automatically used if a workspace is not specified as part of the connection settings.
Description	A description of the workspace.
Startup script	The name of the job that starts the workspace server processes. The default job is ATTSRVR.
Server type	This field is not applicable for use with OracleAS Adapter for VSAM.
Workspace binding name	This field is not applicable for use with OracleAS Adapter for VSAM.
Timeout parameters	The time the client waits for the workspace server to start. If the workspace server does not start within this period, then the client is notified that the server did not respond. Specifying the timeout here overrides the default setting, specified in the Control section. See Also: "Daemon Control" for details about the Daemon Control section.
Client idle timeout	The maximum amount of time a workspace client can be idle before the connection with the server is closed.
Connect timeout	The time the client waits for a workspace server to start. If the workspace server does not start within this period, then the client is notified that the server did not respond. The value specified for this parameter serves as the default timeout for all the workspaces listed in the daemon configuration. The default value for this parameter is 60 seconds.

WS Server

Using the WS Server tab, you specify the features that control the operation of the servers started up by the workspace and allocated to clients. For example, you can configure the workspace to start up a number of servers for future use, prior to any client request, instead of starting each server when a request is received from a client.

The WS Server tab is accessed as follows:

From the Start menu, select Start, Programs, Oracle, and then select Studio.
Select the computer defined in "Setting Up the IBM OS/390 or z/OS Platform in Oracle Studio".
Right-click the computer and select Open Runtime Perspective.
Expand the Daemon node to display the workspaces in the Runtime Explorer.
Right-click the workspace and select Edit Workspace Configuration.
Select the WS Server tab.

After making changes to the workspace, right-click the daemon and select Reload Configuration.

Note:

You can also change daemon settings using the Configuration Explorer, by selecting a computer and drilling-down the list until the daemon is displayed. Right-click the daemon and select Edit Daemon.

Changes made to the daemon configuration in this way are not implemented. They are only implemented after the configuration is reloaded using the Reload Configuration option in the Runtime Manager.

Right-click the daemon and select End Unused Servers. Any servers in the connection pool are closed and new servers start with the new configuration.

The WS Server tab is shown in the following figure:

Description of the illustration wsserver.gif

The WS Server tab coprises fields, as listed in the following table:

Field	Description
Workspace server mode	Specifies the type of new server processes that the daemon starts up. The daemon supports the following server modes: singleClient: Each client receives a dedicated server process. The account in which a server process runs is determined either by the client login information or by the specific server workspace. This mode enables servers to run under a particular user account and isolates clients from each other (because each receives its own process). However, this server mode incurs a high overhead due to process startup times and can use a lot of server resources (because it requires as many server processes as concurrent clients). multiClient: Clients share a server process and are processed serially. This mode has low overhead because the server processes are already initialized. However, because clients share the same process, they can impact one another, especially if they issue lengthy queries. The number of clients that share a process is determined by the Clients per server limit field. multiThreaded: This mode is not applicable for use with OracleAS Adapter for VSAM. reusable: An extension of single-client mode. Once the client processing finishes, the server process does not die and can be used by another client, reducing startup times and application startup overhead. This mode does not have the high overhead of single-client mode because the servers are already initialized. However, this server mode can use a lot of server resources (because it requires as many server processes as concurrent clients). Note: The other modes can be set so that the server processes are reusable. The number of times a process can be reused is controlled by the Reuse limit field value.
Reuse limit	Sets the maximum number of times a particular server can be reused. A one-client server can be reused after its (single) client has disconnected. Reuse of servers enhances startup performance because it avoids the need to repeat initialization. The default for this field is none (0), indicating that server reuse is unlimited. This parameter is disabled only if the server mode value is `singleClient.`
Clients per server limit	Sets the maximum number of clients a server process for the current workspace accepts. The default for this field is none (0), indicating that the number of clients for each server is unlimited. This field is enabled only if the server mode value is `multiClient` or `multiThreaded`.
Server availability	Specifies the number of servers in a pool of servers, available to be assigned to a client. Initial number of servers: The number of server processes that are prestarted for this workspace when the daemon starts up. When the number of available server processes drops lower than the value specified in the Minimum number field, the daemon again starts server processes until this number of available server processes is reached. The default for this field is zero. Minimum number: The minimum number of server processes in the prestarted pool before the daemon resumes creating new server processes (to the value specified in the Initial number of servers field). If this field is set to a value higher than the Initial number of servers field, the daemon uses the value specified in the Initial number of servers field. The default for this field is zero. Keep when daemon ends: When a daemon is shutdown, all the servers started by that daemon are also killed, even if they are active. Set this field to true if you want the servers for the workspace to remain active, even after the daemon has been shut down. If this field is set to true, it is the responsibility of the system operator or manager to ensure that the servers are eventually killed. This must be done at the system level. Set maximum number of servers: The maximum number of available server processes. Once this number is reached, no new nonactive server processes are created for the particular workspace. For example, if a number of server processes are released at the same time, so that there are more available server processes than specified by this field, the additional server processes higher than this value are terminated. The default for this field is 0, meaning that there is no maximum.
resource limitations	Specifies the number of servers that can be in use at any one time. The more servers used, the greater the system resources that are used. Number of subtasks: The number of subtasks for a server that are prestarted for this workspace when the daemon starts up. Thus, setting 10 prestarted servers and 10 subtasks results in 100 tasks started (10 subtasks for each process). Limit number of active servers: The maximum number of active server processes (either available or in use). Once reached, no new server processes will be created for the particular workspace and client connections would be rejected if there is no available server to accept them. Once the number of active servers drops lower the maximum (for example, a client disconnects from a server and the server terminates), new servers can again be started. If the value of this field is set to a nonzero value lower than the value for the Initial number of servers field, the daemon assumes it is set to the same value as the Initial number of servers field. The default for this field is zero, meaning that no maximum is enforced.
Server Priority	The priority for servers. For example, a workspace for applications with online transaction processing can be assigned a higher priority than a workspace that requires only query processing. Use default priority: Sets the priority as 0. There is no specific priority for this workspace. Use priority: Enables setting the priority.

WS Logging

Use the WS Logging tab to specify parameters to log that occur with the workspace server process.

The WS Logging tab is accessed as follows:

From the Start menu, select Start, Programs, Oracle, and then selct Studio.
Select the computer defined in "Setting Up the IBM OS/390 or z/OS Platform in Oracle Studio".
Right-click the computer and select Open Runtime Perspective.
Expand the Daemon node to display the workspaces in the Runtime Explorer.
Right-click the workspace and select Edit Workspace Configuration.
Click the WS Logging tab.

After making changes to the workspace, right-click the daemon and select Reload Configuration.

Note:

You can also change daemon settings using the Configuration Explorer, by selecting a computer and drilling-down the list until the daemon is displayed. Right-click the daemon and select Edit Daemon.

Changes made to the daemon configuration in this way are not implemented. They are only implemented after the configuration is reloaded using the Reload Configuration option in the Runtime Manager.

Right-click the daemon and select End Unused Servers. Any servers in the connection pool are closed and new servers start with the new configuration.

The WS Logging tab is shown in the following figure:

Description of the illustration wslog.gif

The WS Logging tab comprises fields, as listed in the following table:

Field	Description
Specific log file format	Defines the name and location of the server log file. The field must specify the full path name. If no directory information is provided for the log file, then it will be located in the login directory of the account running the Oracle Connect workstation. The following tokens can appear in the log file template and will be replaced accordingly: %A: workspace name %D: date (yymmdd) %I: instance number of the given workspace server %L: server account's login directory %P: server's process ID %T: time (hhmmss) %U: server's account name (username)
Trace options	Specifies the type of tracing to be performed. The following options are available: No timeout: Disables the standard RPC timeouts, setting them to a long duration (approximately an hour) to facilitate debugging. Call trace: Generates a message in the server log file for each RPC function called. This is useful for troubleshooting the server. RPC trace: Enables debugging messages on the server. Sockets: Generates a message in the server log file for each socket operation. This is useful for troubleshooting client/server communication - providing a detailed trace of every client/server communication. Extended RPC trace: Generates a verbose message in the server log file for each low-level RPC function called. This is useful for troubleshooting the server. System trace: Generates operating system-specific tracing. Timing: Generates a timestamp for every entry to the server log file.
Logging	Specifies the level of events that are logged for the workspace. The following levels are available: none: The event log only displays the IP addresses of client that have logged in and out from the workspace. error: The event log displays the IP addresses of client that have logged in and out from the workspace as well as any errors that have been generated. debug: The event log displays the IP addresses of client that have logged in and out from the workspace as well as any errors that have been generated and all trace results that were specified in the Daemon Logging tab.
Server	Specifies server connection events. Connect: The event log displays server connection events. Disconnect: The event log displays server disconnect events.
Client	Specifies what tracing is performed. Connect: The event log displays client connection events. Disconnect: The event log displays client disconnect events.
Audit	This group is not applicable for use with OracleAS Adapter for VSAM.

WS Security

Using the WS Security tab you specify the level of security at the workspace level, as opposed to the daemon level, which is set in the Security section of the daemon.

Field	Description
Administration	Defines the users (accounts) allowed to perform administrative tasks (tasks that require administrative login) on this workspace.
Administrator privileges	Identifies the users (accounts) with administrator privileges). All users: Indicates that anyone can access the workspace and change the settings. Selected users only: The names of users (accounts) and groups that can be administrators.^Foot 1 Note: If a user is not specified here, the user specified in the Workspace users field will have administrator rights for this workspace. In this case, if all users are selected for the Workspace users field, then all users have administrator rights for this workspace. Allow Listing: Determines whether this workspace appears in the list of workspaces
Workspace access	Defines the users (accounts) allowed to access the workspace, firewall access ports, workspace account, and anonymous login permissions.
Workspace users	Lists the users who are allowed to use the workspace. All users: Indicates that any user who has logged on to the daemon can use the workspace. Selected users only: Specifies users (accounts) and groups that can use the workspace.^Foot 2 Note: If a user is not specified, any user who has logged on to the daemon can use the workspace. Enable ports range: Defines the firewall ports through which you access the workspace. Specifies the range of ports available for this workspace when starting server processes. Use this option when you want to control the port number, so that Oracle Connect can be accessed through a firewall. Use specific workspace account: Defines the operating system account used for the workspace. If not specified, the account name that was provided by the client is used. Allow anonymous client login to server account: Defines whether this workspace can be invoked without authentication (user name/password). If anonymous login is allowed, specify the server account name to use. If this field is not specified, then the value in the Workspace account field is used.