A Advanced Tuning of the Metadata

Oracle Studio enables you to define adapter interactions. In addition, Oracle Studio defines input and output structures used for these interactions. The interactions and input and output structures are maintained as metadata in the Metadata view of Oracle Studio.

Editing Adapter Interactions

Using Oracle Studio, do the following to edit the metadata in interactions for OracleAS Adapters for Tuxedo:

From the Start menu, select Programs, Oracle, and then select Studio.
Expand the Machines folder, then expand the machine you are working with.
Expand the Bindings folder.
Expand the NAV binding.
Expand the Adapters folder to display the adapters list.
Right-click the Tuxedo adapter, and select Show Metadata View to open the Metadata view.

You can create and edit the adapter metadata as follows:
- Adapter Metadata General Properties: Enter and edit information about the adapter, such as the adapter name and the way in which you connect to the adapter. You make these changes in the Design perspective, Metadata view.
- Adapter Metadata Interactions: Enter details of an interaction.
- Adapter Metadata Schema Records: The input and output record structure for a record in the adapter definition.

Note:

If you are using the Tuxedo Gateway adapter, you must restart Tuxedo after making any changes to the metadata.

Adapter Metadata General Properties

You can enter and edit information about the adapter, such as the adapter name and the way in which you connect to the adapter. You make these changes in the Design perspective, Metadata view. The following describes how to open the Adapter General Properties editor.

In Oracle Studio Design perspective, Metadata view, expand the Adapters folder.
Right-click the Tuxedo adapter to edit, and select Open.

The General properties editor is displayed.

The Adapter General Properties editor is shown in the following figure:

Figure A-1 Adapter Metadata General Properties

Note:

If you are using the Tuxedo Gateway adapter, only the following Adapter specification properties are displayed:

maxFieldedBufferItems
maxFieldedBufferSize

The following table lists the adapter general properties:

Table A-1 Adapter General Properties

Field	Description
Description	Specifies an identifying description of the adapter.
Version	The schema version.
Header	A `C` header file to map between the data structure and the adapter.
Authentication mechanism	Specifies the authentication to access the adapter. The available mechanisms are: kerbv5 none basic password
Max request size	Specifies the maximum size in bytes for an XML request or reply. Larger messages are rejected with an error.
Max active connections	Specifies the maximum number of simultaneous connections for an adapter (per process).
Max idle timeout	Specifies the maximum time, in seconds, that an active connection can stay idle. After that time, the connection is closed.
Adapter Specifications	The Adapter specifications sections displays adapter-specific properties for an interaction. The properties are: `maxFieldedBufferItems`: Sets a limit to the number of items that a fielded buffer may hold. The default value is 800. `maxFieldedBufferSize`: Limits the total size of a message buffer of type FML. The default is set to 2 Kilobytes. `maxOutputXmlBufSize`: Controls the size of memory allocated for output message buffers of type XML. The default is set to 8 Kilobytes. Note: This property is not displayed if you are using the Tuxedo Gateway adapter. `transactionTimeout`: Controls the duration of a Tuxedo transaction (in seconds). If not set (or set to 0), the Tuxedo transaction is not interrupted and lasts until explicitly terminated. This is the default. Note: This property is not displayed if you are using the Tuxedo Gateway adapter.

Adapter Metadata Interactions

The Adapter Metadata Interactions editor defines an interaction and its input and output definitions. The following describes how to open the Adapter Metadata editor.

In Oracle Studio Design perspective, Metadata view, expand the Adapters folder.
Expand the Tuxedo adapter with the interaction to edit.
Expand the Adapter folder.
Right-click the adapter you want to edit and select Open.

The Adapter Metadata Interactions editor is displayed.

The Adapter Metadata Interactions editor that is displayed depends on the type of Tuxedo adapter you are using. The following sections describe the two types of Interaction editors.

Adapter Metadata Interactions for the Tuxedo and Tuxedo Queue Adapters
Adapter Metadata Interactions for the Tuxedo Gateway Adapter

Adapter Metadata Interactions for the Tuxedo and Tuxedo Queue Adapters

This section describes the adapter metadata Interactions for the Tuxedo and Tuxedo Queue adapters.

The adapter metadata interactions editor for Tuxedo and Tuxedo Queue adapters is shown in the following figure:

Figure A-2 Adapter Metadata Interactions for Tuxedo and Tuxedo Queue

The following table lists the Interaction properties for the Tuxedo and Tuxedo Queue adapters:

Table A-2 Adapter Metadata Interaction Properties for Tuxedo and Tuxedo Queue

Field	Description
Interaction name	Specifies the name of the interaction.
Description	Provides a descriptive identifier for the interaction.
Mode	Determines the interaction mode. The following interaction modes are available: sync-send-receive: The interaction sends a request and expects to receive a response. sync-send: The interaction sends a request and does not expect to receive a response. sync-receive: The interaction expects to receive a response. async-send: Not applicable.
Input record	Identifies an input record.
Output record	Identifies an output record for the results of an interaction.
Interaction Specific Parameters	Defines the properties and values of parameters specific to an interaction. The following properties are available: Interaction Type: Select one of the following: service: Enables service interaction (default). enqueue: Stores a message on the queue that is specified by the information provided in the Queue Name box and the Queue Space Name box. post: Posts an event, whose name is specified by the Event Name box, and any related data. Input Buffer Type: The type of buffer used for the input. Output Buffer Type: The type of buffer used for the results of an interaction. No Transaction: Enables a service to be executed, regardless of the transaction context. No Reply Expected: For future use. No Blocking Request: Avoids a `FROM` request submission if a blocking condition exists. No Timeouts: Ignores blocking timeouts. Signal Restart: If selected, whenever a signal interrupts an underlying system call, this call is reissued.

Adapter Metadata Interactions for the Tuxedo Gateway Adapter

This section describes the adapter metadata interactions for the Tuxedo Gateway adapter.

The adapter metadata properties editor for the Tuxedo Gateway adapter is shown in the following figure:

Figure A-3 Adapter Metadata Interactions for Tuxedo Gateway

Adapter metadata interactionsfor Tuxedo Gateway Adapters

The following table lists the adapter metadata interaction properties for the Tuxedo Gateway adapter:

Table A-3 Adapter Metadata Interaction Properties for Tuxedo Gateway

Field	Description
Interaction name	Specifies the name of the interaction.
Description	Provides a descriptive identifier for the interaction.
Mode	Determines the interaction mode. The following interaction modes are available: sync-send-receive: The interaction sends a request and expects to receive a response. sync-send: The interaction sends a request and does not expect to receive a response. sync-receive: The interaction expects to receive a response. async-send: Not applicable.
Input record	Identifies an input record.
Output record	Identifies an output record for the results of an interaction.
Interaction Specific Parameters	Defines the properties and values of parameters specific to an interaction. The following properties are available: Output Buffer Type: The type of buffer used for the results of an interaction.

Adapter Metadata Schema Records

The Adapter Metadata Schema Records editor defines the general details of the input and output record structures for the interaction.The following describes how to open the Adapter Metadata Schema Records editor:

In Oracle Studio Design perspective, Metadata view, expand the Adapters folder.
Expand the Tuxedo adapter with the schema records to edit.
Expand the Schemas.
Right-click the schema you want to edit and select Open.

The Adapter Metadata Schema Records editor is displayed.

The Adapter Metadata Schema Records editor is shown in the following figure:

Figure A-4 Adapter Metadata Schema Records

The following table shows the adapter metadata schema record properties.

Use the Fields List area to define single data items within a record.

Table A-4 Adapter Metadata Schema Record Properties

Field Description

Field	Description
Name	Specifies the name of the field.
Type	The data type of the field. The following are valid data types: `Binary` `Boolean` `Date` `Double` `Float` `Int` `Long` `Numeric` `Short` `String` `Time` `Timestamp` `XML`
Length	The size of the field including a null terminator, when the data type supports null termination.

Name

Specifies the name of the field.

Type

The data type of the field. The following are valid data types:

Binary
Boolean
Date
Double
Float
Int
Long
Numeric
Short
String
Time
Timestamp
XML

Length

The size of the field including a null terminator, when the data type supports null termination.

Note:

Use the Specifications box to specify field properties.

Adapter Metadata XML

You can also edit the adapter metadata by viewing its XML schema. The following describes how to open the adapter metadata XML editor:

In Oracle Studio Design perspective, Metadata view, expand the Adapters folder.
Right-click the adapter to edit, and select Open as XML.

The adapter XML editor is displayed in the Design view.

The adapter XML editor is shown in the following figure:

Figure A-5 Adapter Metadata XML Editor

For information on how to edit the properties in the XML editor Design view, see Editing XML Files in Oracle Studio.