Wednesday, 14 March 2012

SOA11g Adapter definitions

  1. Describe adapter concepts and framework
    1. Overview
    2. Adapter Types
    3. Service Types
    4. Technology Adapters
    5. Legacy Adapters
        1. Oracle Connect
        2. Oracle Studio
    6. Packaged-Application Adapters
    7. Oracle Adapter for Oracle Applications
  2. Describe Technology adapters: File, Database, JMS, etc
    1. File/FTP Adapter
    2. Socket Adapter
    3. JMS Adapter
    4. Database Adapter
    5. AQ Adapter
    6. MQ Adapter
    7. BAM Adapter
  3. Describe Applications Adapters Ebiz suite,Peoplesoft, Siebel, etc
  4. Explain adapter run-time configuration
  5. Explain adapter design-time configuration
  6. References
This is part of 1Z0-451: Oracle SOA Foundation Practitioner Exam

Describe adapter concepts and framework

Overview

* Oracle Adapters use JCA technology to connect external systems to the Oracle SOA Suite.
* Based on open standards such as JCA, XML, WSDL.
* Assembled with SCA model.

Adapter Types

* Technology adapters
- Installed as part of Oracle Fusion Middleware.
* Legacy adapters
* Packaged-application adapters
* Oracle application adapters

Service Types

Request-Response (Outbound Interaction) Service
* Support synchronous request-response service.
* Used to:
- CRUD back-end data
- call back-end workflows and transactions

Event Notification (Inbound Interaction) Service
* Support asynchronous event-notification service.
* Listen or poll for back-end event changes.
* Used to keep track of back-end events.

Metadata Service

Technology Adapters

* Files
* FTP
* Sockets
* Database Adapter
* Java Messaging Service (JMS)
* BAM
* Advanced Queuing (AQ)
* Message Queuing (MQ) Series
* See here for details.

Architecture


Design-Time Components
* Use JDev to generate adapter metadata.
- Binding config files consist of J2CA-centric XML markup.
- Binding config files used by JCA Binding Component to seamlessly integrate the JCA 1.5 resource adapter with Oracle Fusion Middleware.


Run-Time Components
* Adapter run-time component is the JCA 1.5 resource adapter for the specific back-end application.
* Deployed in JCA container of the WebLogic Server.
* Integration with OFM is achieved through the JCA Binding Component, which converts Web service messages to JCA interactions and back. See here for more details.

Deployment
* Technology adapters are deployed as JCA 1.5 resource adapters within the same WebLogic Server container as that of OFM.
* JNDI names are used at design time with JDev. Need to setup JNDI at deployment.

Legacy Adapters

* Tuxedo
* CICS
* VSAM
* IMS/TM
* IMS/DB

Architecture
Oracle Connect
* Oracle Connect is a component that resides on the legacy and mainframe platforms.
* It consists of native adapters for communicating with the mainframe application and data stores.
* It consists of:
- Server processes: process client requests.
- Native adapters: to communicate with Tuxedo and IMS-TM txn systems.
- Daemon: RPC-based listener that manages and maintains multiple server configurations.
- Repository: one repository per Oracle Connect instance to store XML-based schema and config info.

Oracle Studio
* Oracle Studio is a design time tool for configuring the Oracle AS Adapters for mainframes.
* Enables you to configure the services, events, and connection information for native adapters.
* Enables you to do management and monitoring of Oracle Connect.
* Based on Eclipse and available on Windows platform only.

Packaged-Application Adapters

* Available as part of the OracleAS Adapters CD.

Packaged-Application Adapters
* SAP R/3
* PeopleSoft
* Siebel
* J.D. Edwards OneWorld

Architecture

Oracle Adapter for Oracle Applications

* a.k.a E-Business Suite Adapter

Describe Technology adapters: File, Database, JMS, etc

* See here for a list of adapter related books.
* Provides comprehensive, bidirectional, multimodal, synchronous, and asynchronous connectivity to Oracle Applications.

File/FTP Adapter

Supported operations
* Read File
* Write File
* Synchronous Read File
* List Files

Features
* File formats
- XML
- Delimited
- Fixed positional
- Binary
- COBOL Copybook data
- opaque (e.g. JPEGs)
* FTP Servers
- Supports most RFC 959 compliant FTP servers on all platforms.
- Supports SFTP server version 4 or later.
* Inbound and outbound interactions
* File debatching: publish messages in a specific number of batches.
* File ChunkedRead: uses an invoke activity within a while loop to process the target file (usually large file).
* File Sorting
- Use a synchronous operation
- Add the following property to the inbound JCA file:
 
<property name="ListSorter" value="oracle.tip.adapter.file.inbound.listing.TimestampSorterAscending"/>
<property name="SingleThreadModel" value="true"/>
 
* Dynamic outbound directory and file name specification.
* Security
* Nontransactional
* Proxy support:
- make sure proxy server supports FTP traffic through HTTP connection.
- only passive data connections are supported.
* No payload support
- select Do not read file content option.
* Large payload support
- select Read File as Attachment option.
* File based triggers
* pre-processing and post-processing of files
- Use pipeline and valves
* Error handling
* Threading Model
- default threading model:

- modified threading model: single threaded model, partitioned threaded model.
* Performance tuning
- use knobs to throttle the inbound and outbound operations.
- see here for more details.
* High availability
* Multiple directories
- Process files recursively
- Use ignoreListingErrors property to ignore folder permission issues.
* Append mode
- Not supported for SFTP scenarios
* Securing Enterprise Information System Credentials
- Use WebLogic Admin Console to config.

Socket Adapter

* Used by Mediator and BPEL to read and write data over TCP/IP sockets.
* Oracle Socket Adapter is a JCA 1.5 compliant adapter for modeling standard or nonstandard protocols for communication over TCP/IP sockets.
* You can use an Oracle Socket Adapter to create a client or a server socket, and establish a connection.
* The data that is transported can be text or binary.
* Communication modes:
- Inbound synchronous request/response
- Outbound sync request/response
- Inbound receive
- Outbound invoke

JMS Adapter

* Is based on JMS version 1.0.2b
* Is a generic Oracle JMS Adapter (works with any JMS provider).
* Supports JMS topics and queues.
* Supports byte, text, and map message types.
* Supports JMS headers and properties.
* Supports jca.message.encoding property.
* Supports the JMS message selector.
* Is DOM2 compliant.
* Supports normalized message.
* Supports specifying a durable JMS subscriber.
* Supports persistent and nonpersistent modes of a JMS publisher.
* Support three JMS types of acknowledgments:
- DUPS_OK_ACKNOWLEDGE
- AUTO_ACKNOWLEDGE
- CLIENT_ACKNOWLEDGE
* Supports tracking message size.
* Supports MapMessage Data Type.
* Supports Enterprise Information System (EIS) Credentials.
* Supports Streaming Large Payload.
* Supports Transactions.
* Supports Error Handling.
* Supports Multiple Consumer Threads.
* Supports Performance Tuning
* Does not support connection retry functionality for MQ provider.
* Does not support outbound retry functionality for AQJMS on Solaris.

Database Adapter

* Enables Oracle SOA Suite and Oracle Fusion Middleware to communicate with database end points.
* Is a JCA 1.5 connector, which runs on the Oracle Application Server.
* Relies on an underlying JDBC connector/driver to enact the database communication.
* Non-programmatic (unlike JDBC).

AQ Adapter

* The Oracle AQ Adapter is both a producer and a consumer of AQ messages.
* The enqueue operation is exposed as a JCA outbound interaction.
* The dequeue operation is exposed as a JCA inbound interaction.
* The Oracle AQ Adapter supports ADT (Oracle object type), XMLType, and RAW queues as payloads. It also supports extracting a payload from one ADT member column.

AQ Adapter Features
* Enqueue-Specific Features (Message Production):
- Correlation Identifier which can be used to retrieve specific messages.
- Multi-consumer Queue.
- Message priority.
- Time specification and scheduling (delay interval and expiration time).
* Dequeue and Enqueue Features:
- Poll option.
- Notification option.
- Mutliconsumer queue.
- Navigation of messages for dequeuing (use correlation id as dequeue order).
- Retries with delays (message is moved to exception queue if retries failed).
- Rule based suscription.
- Oracle AQ Adapter header properties.
- Dequeue condition.

MQ Adapter

* The Oracle MQ Series Adapter enables applications to
- connect to MQ Series queue managers
- place MQ Series messages on queues
- or remove MQ Series messages from queues.
* The Oracle MQ Series Adapter provides all native MQ Series functionalities:
- Supports Positive Action Notification (PAN) and Negative Action Notification (NAN).
- Supports report messages such as confirmation on delivery, confirmation on arrival, exception report, and expiry report.
- Supports sending unwanted or corrupted messages to a dead-letter queue.
- Provides advanced filter options, such as filtering message belonging to a group.
- Faster and easier to use than Oracle JMS Adapter.

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