Top Oracle SOA Admin Interview Questions and Answers

Last updated on 10th Nov 2021, Blog, Interview Questions

These Oracle SOA Admin Interview Questions have been designed specially to get you acquainted with the nature of questions you may encounter during your interview for the subject of Oracle SOA Admin . As per my experience good interviewers hardly plan to ask any particular question during your interview, normally questions start with some basic concept of the subject and later they continue based on further discussion and what you answer.we are going to cover top 100 Oracle SOA Admin Interview questions along with their detailed answers. We will be covering Oracle SOA Admin scenario based interview questions, Oracle SOA Admin interview questions for freshers as well as Oracle SOA Admin interview questions and answers for experienced.

1. What is SOA [Service-Oriented Architecture]?

Ans:

• SOA is an IT architecture strategy for business solution (and infrastructure solution) delivery based on the concept of service orientation.
• It is a set of components that can be invoked, and whose interface descriptions can be published and discovered.
• It aims at building systems that are extensible, flexible, and fit with legacy systems. It promotes the re-use of basic components called services.

2. Why do we need Oracle SOA Suite?

Ans:

• Service is an important concept. Services can be published, discovered, and used in a technology-neutral, standard form by the set of protocols of the web services.
• Other than being just architecture, SOA is the policies, practices, and frameworks by which it ensures the right services are provided and consumed.
• It becomes critical to implement processes that ensure that there are at least two different and separate processes – one for the provider and the other for the consumer, using SOA.
• The Business Service Bus is the starting point for developers that guide them to a coherent set that has been assembled for their domain.
• This is better than leaving developers to discover individual services and put them into context.

3. What are the Challenges faced in SOA adoption?

Ans:

• One of the challenges faced by SOA is managing services metadata. The second biggest challenge is the lack of testing in the SOA space. Another challenge is providing appropriate levels of security.
• Interoperability is another important aspect of SOA implementations. Vendor hype concerns SOA because it can create expectations that may not be fulfilled.

4. What is SOA governance? What are its functions?

Ans:

Service-Oriented Architecture (SOA) governance is a concept used for activities related to exercising control over services in an SOA Some key activities that are often mentioned as being part of SOA governance are :

• Managing the portfolio of services: This includes planning the development of new services and updating current services.
• Managing the service lifecycle: This is meant to ensure that updates of services do not disturb current services to the consumers.
• Using policies to restrict behavior: Consistency of services can be ensured by having the rules applied to all the created services.
• Monitoring performance of services: The consequences of service downtime or underperformance can be severe because of service composition. Therefore action can be taken instantly when a problem occurs by monitoring service performance and availability.

5. Business Benefits of Service-Oriented Architecture?

Ans:

SOA can help businesses respond more quickly and economically to changing market conditions. SOA can be considered an architectural evolution. It captures many of the best practices of previous software architectures.

• The goal of separating users from the service implementations is promoted by SOA.
• The goals like increased interoperability increased federation and increased business & technology domain alignment can be achieved by SOA due to its architectural and design discipline.
• SOA is an architectural approach for constructing complex software-intensive systems from services. SOA realizes its business and IT benefits through utilizing an analysis and design methodology when creating services.

6. IT Benefits of Service-Oriented Architecture?

Ans:

The benefits of SOA are :

• The ability to build composite applications is provided.
• Business services are offered across divided.
• Provides truly real-time decision-making applications.
• Reliability is enhanced.
• It is not necessary that Services be at a particular system or network.
• The approach is completely loosely coupled.
• Hardware acquisition costs are reduced.
• At every level, there’s Authentication and authorization support.
• Existing development skills are leveraged.
• Provides a data bridge between incompatible technologies.
• The search and connectivity to other services are dynamic.

7. SOA Processes: Short and Long-Running Processes?

Ans:

SOA processes have the following types of activities :

• Tasks to extract, manipulate, or transform process data
• Scripts or inline code snippets
• Calls to systems and services, both synchronous and asynchronous
• Events, including timed events, callbacks, and unsolicited notifications from systems

8. Explain About Web service?

Ans:

• Web service is a type of software system which is used to exchange data and use information from one machine to another machine through a network. Generally, Web services based on the standards such as TCP/IP, HTTP, Java, HTML, and XML.
• Web services are pure XML-based which is used for exchanging information through the Internet to direct application to application interaction. These systems include programs, objects, messages, or documents.
• Many software applications written in various programming languages and running on various platforms can use web services to exchange data over a computer network.
• You can develop Java-based web services on Solaris and that is accessible from your V.B Program that runs on windows.

9. What is an SOA composite?

Ans:

SOA composite provides a coarsely-grained service for a business application, Which processes messages in xml format.The composite application defines an assembly model stored in an SCA descriptor file called composite.xml that may contain :

• One or more service entry points
• One or more service components
• Zero, One or more external references
• Bindings and properties.

10. Difference Between Oracle SOA 10g and Oracle SOA 11g?

Ans:

There are so many changes in oracle soa 11g when compared to oracle soa 10g in business and technology and some new functionality added In Oracle SOA 11g contains Service Component Architecture whereas Oracle SOA 10g having no Service Component Architecture.

• ORACLE SOA Suite 10g is based on Oracle AS 10g It uses Oracle Application Server 10.1.x OC4J Sun JVM Repository tool irca to create the SOA 10g repository Managed with Application Server Console Oracle SOA Suite 11g is based on Oracle FMW 11g It uses the Oracle Weblogic server 10gR3 Sun or JRockit JVM Repository Creation Utility ( RCU ) to create or delete the SOA 11g repository Weblogic server console used for managing.
• Oracle SOA 11g all the SOA Components of Project deployed into Single Server whereas 10g each component is deployed into a particular server.
• In SOA 10g having ESB Console, BPEL Console, Application Server Control these are all individual and not well integrated.
• In SOA 11g Provides service monitoring across all SOA Components Such as ESB, BPEL, Human Workflow SOA suite 11g has the Enterprise Management Console the em console is used for Manage SOA Suite Services, Manage SOA Suite Deployment, Review Logs, and Exceptions.
• SOA Suite 11g Components Oracle Adapters Oracle Mediator Business Events and Events Delivery Network Oracle Business Rules Human Workflow Oracle Business Activity Monitoring Oracle Enterprise Manager.

11.Principles Of Soa?

Ans:

• Loose coupling
• Reusability
• Interoperability
• Flexible

12. What Is The Difference Between 10g And 11g?

Ans:

• SCA architecture was followed in 11g and not in 10g
• In 11g you can put all your project SOA components in composite.xml file and deploy as a single deployment unit to single server, where in 10g you have to deploy each component to the respective server (i.e. ESB to ESB server, BPEL to BPEL Server)
• Basically all the SOA components like BPEL, ESB (Called Mediator in 11g), & OWSM are brought into one place in 11g using SCA composite concept.
• The major difference between 10g & 11g would be the app server container. 10g by default runs onOC4J while 11g runs on Web logic Server.
• In 10g every BPEL is a separate project, but in 11g several components can make 1 project as SCA.
• In 10g consoles are separate for BPEL and ESB, but in 11g Enterprise Manager contains all.
• In 10g BAM and business rules are outside SOA Suite, but in 11g they are in SOA Suite.

13. Is Oracle Soa Same As Oracle Fusion Middleware?

Ans:

No because SOA is one of the parts in Fusion middleware and SOA behaves like user interface where as Fusion is big platform.

14. What Is Sca?

Ans:

Service Component Architecture (SCA) provides a programming model for building applications and systems based on a Service Oriented Architecture. SCA is a model that aims to encompass a wide range of technologies for service components and for the access methods which are used to connect them.

15.What Is The Soa Suite 11g Components?

Ans:

• Oracle Adapters
• Oracle Mediator
• Business Events and Events Delivery Network
• Oracle Business Rules
• Human Workflow
• Oracle Business Activity Monitoring
• Oracle Enterprise Manager

16. What Is Choreography? How Does It Differ From Orchestration?

Ans:

In choreography there is no business process to control the integration between the systems; each system will directly integrate with one another in sequence where as in Orchestration there is a business process which controls all the services (source/Target) which is part of the integration.

17. What Are The Different Design Patterns In Soa?

Ans:

• Synchronous
• Asynchronous Fire and Forget
• Asynchronous Delayed Response.

18. In How Many Ways Can A Process Be Deployed?

Ans:

• Using Jdeveloper
• Through Enterprise Manager Console
• Through Weblogic Scripts.

19.What Are Dspmaxthread And Recieverthread Properties? Why Are They Important?

Ans:

Receiver Threads property specifies the maximum number of MDBs that process Async across all domains. Whereas the dspMaxThread are the maximum number of MDBs that process Async and threads that operate across a domain. So, we need to ensure that the dspMaxThread value is not greater than Receiver Threads.

20. How Does A Async Request Run In The Backend?

Ans:

The sequences of events involved in the delivery of invoke messages is as follows :

• The client posts the message to the delivery service.
• The initial state of the message is 0 (undelivered).
• The delivery service schedules a dispatcher message to process the invocation message asynchronously.
• The dispatcher message is delivered to the dispatcher through the afterCompletion() call. Therefore, the message is not delivered if the JTA transaction fails.
• The dispatcher sends the JMS message to the queue. Places a very short JMS message in the in-memory queue (jms/collaxa/BPELWorkerQueue) in OC4J JMS. The small JMS message triggers the Worker Bean in the downstream step.
• This message is then picked up by a Worker Bean MDB, which requests the dispatcher for work to execute. If the number of Worker Bean MDBs currently processing activities for the domain is sufficient, the dispatcher module may decide not to request another MDB.
• MDB fetches the invocation message from the dispatcher.
• MDB passes the invocation message to Oracle BPEL Server, which updates the invocation message state to 1 (delivered), creates the instance, and executes the activities in the flow until a breakpoint activity is reached.

21. How To Increase The Transaction Timeouts In Soa?

Ans:

For the transaction timeout needs to be increased, all the below settings timeout value needs to be changed to the expected Timeout value.

• JTA
• Engine Bean
• Delivery Bean

22. Is It Possible To Use Ms Sql Server As Dehydration Store With Soa Suite ?if Yes How?

Ans:

Yes it is possible.

To automatically maintain long-running asynchronous processes and their current state information in a database while they wait for asynchronous callbacks, you use a database as a dehydration store. Storing the process in a database preserves the process and prevents any loss of state or reliability if a system shuts down or a network problem occurs. This feature increases both BPEL process reliability and scalability. You can also use it to support clustering and failover.

23. What Is Soa Governance? What Are Its Functions?

Ans:

Service-Oriented Architecture (SOA) governance is a concept used for activities related to exercising control over services in an SOA.

Some key activities that are often mentioned as being part of SOA governance are :

• Managing the portfolio of services: This includes planning development of new services and updating current services.
• Managing the service lifecycle: This is meant to ensure that updates of services do not disturb current services to the consumers.
• Using policies to restrict behavior: Consistency of services can be ensured by having the rules applied to all the created services.
• Monitoring performance of services: The consequences of service downtime or underperformance can be severe because of service composition. Therefore action can be taken instantly when a problem occurs by monitoring service performance and availability.

24.What Is End Point Virtualization?

Ans:

Generally a service bus is used for endpoint virtualization and in 11g stack; Oracle Service Bus (OSB) is the primary service bus. In exposed proxy’s message flow, it can route the request to any of your environment’s actual (physical) service on the basis of whatever logic.Mediator can also be used to expose the service and in mediator routing rule, it can be routed to actual service.

25. What Are Dvm’s And How Are They Helpful In Soa?

Ans:

1. DVM-Domain Value Map is static mappings between a source and target system which can be used in transformations.

2. The value can be changed via SOA composer.

26. What Is The Difference Between Xref And Dvm?

Ans:

• XREF : It is dynamic since the values to the XREF can be populated dynamically and it is stored in XREF_DATA table in SOA Dehydration store.
• DVM : Domain Value Map is static mappings between a source and target system which can be used in transformations.

27. What Is Dehydration Store?

Ans:

Dehydration store is the database where the instances get stored when it gets dehydrated by the process on the occurrence of non-idempotent activities and also stores the information on the long running processes.

28. What Is Decision Service?

Ans:

Oracle SOA Suite provides support for Decision components that support Oracle Business Rules. A Decision component is a mechanism for publishing rules and rule sets as a reusable service that can be invoked from multiple business processes. These rules can be changed without redeploying the code.

29. Why We Use Bpel And Osb?

Ans:

OSB is the light-weight service bus wherever there is not much business logic involves and there is need to just get the message routed between the systems OSB is used where as when there is more business logic involves in the process, then BPEL will be used.

30. What Is Mds?

Ans:

MDS –Metadata Store :

Wsdl and Schemas to be used in the process can be published to the MDS and get it used in the code by referring the artifacts from the MDS

• JAR (Deployment unit) size will be reduced.
• Duplication of the artifacts can be avoided between the services.

31. What Is A Xa Data Source? How It Differs From A Non-xa Data Source?

Ans:

An XA transaction involves a coordinating transaction manager, with one or more databases (or other resources, like JMS) all involved in a single global transaction. Non-XA transactions have no transaction coordinator, and a single resource is doing all its transaction work itself (this is sometimes called local transactions).

32. How Can We Secure Our Web Services Using Oracle Soa Suite?

Ans:

When accessing the services should be restricted to the group,then service should be secured via WSM (Web service Manager).

33. How To Deploy An Xsl File Without Deployment Of Bpel Process?

Ans:

We will directly deploy the XSLT, options: –

• Using ANT script by file replacement in TMP folder.
• By creating a folder in BPEL PM Installation folder and specifying its location in our BPEL code with http call and replacing our xslt to that location.

34. What Is Ha File And Ftp Adapters?

Ans:

In the clustered environment, File and FTP adapters should be used as HA (High Availability)

1. Inbound : It is controlled by Control Files and avoids the race between the manages servers in reading the files where the reference of the files read by the managed servers will be maintained in the control directory.

2. Outbound: It is controlled by DB Mutex table exist in the SOA dehydration store and this avoids duplicated been written to the same file when all the managed servers in the clusters process the same messages.

35. What Is Singleton Property In Soa?

Ans:

In the clustered environment when the processing of the message should happen via only one SOA managed server, then the property singleton needs to be defined at the adapter level.

36. What Is A Pick Activity? Can I Have A Pick Activity With No Onmessage Branch?

Ans:

Pick activity picks the messages from service (Source) which has multiple operations or the BPEL process needs to receive the messages from multiple source system. Pick activity should have at least on Message branch.

37. What Is A Flow Activity? What Is A Flow N Activity And How Does It Leverages The Flow Activity?

Ans:

Flow activity is used, when parallel execution of the flow is needed and to use this property “non blocking invoke should be set as true “at the partner link level and no. of execution of parallel flow is defined and static. Where as in Flown the no. of execution of parallel flow is not static and it is determined during run time.

38. What Do You Mean By Non-idempotent Activity?

Ans:

Activities like Pick, Wait, receive, reply and checkpoint() are called non Idempotent activity and during the execution of the process whenever these activities are encountered then it gets dehydrated to the dehydration store.

39. How Can We Embed Or Use A Java Code In Bpel?

Ans:

Using JAVA embedding activity in BPEL, Java code can be embedded in BPEL and can be used.

40. How Does Pick Activity Differ From A Receive Activity?

Ans:

1. Pick activity can act as a multiple receive activity in some business scenarios.

2. If we have two inbound operations and both can trigger the bpel process then we will go with pick activity as we can’t have two receive activity with create Instance box checked.

41. How Can We Make A Partner Link Dynamic?

Ans:

If we have to send the request to different service which has the same wsdl then dynamic partner link will be used and using addressing schema we can set the endpoint dynamic to send the request to the desired service.

42. What Is A Nonblockingall Property?

Ans:

Non- blocking invoke is used when Parallel flow needs to be executed where new thread will be created for each invoke a activity and which will execute simultaneously.

43. How Can We Improve The Performance Of An Xsl File?

Ans:

By avoiding use of various if statements and using choose and by using for-each group in place of for-each.

44. How Do We Handle Transactions In Bpel?

Ans:

Property needs to be defined to start the new transaction or to continue with the same transactions

Property Name : Transaction and if this has value as required then the BPEL process will be continued in the same transaction where as if the value is defined as requiresnew then it will start the new transaction.

45. What Are Transient And Durable Bpel Processes?

Ans:

• Durable :- It is long running process and initiated through a one-way invocation and do incur one or more dehydration points in the database during execution.

  Ex : Asynchronous

• Transient:- It is short-lived process, request-response style processes and do not incur dehydration during their process execution

  Ex : Synchronous.

46. When U Will Go For Sync Process?

Ans:

When ever the services returns the response in few seconds, it is recommended to go for synchronous BPEL process if not the BPEL process should be Asynchronous the reason is calling application can’t proceed further in case of synchronous process.

47. What Is A Syncfileread Operation?

Ans:

When file has to be read in the mid of the BPEL process, then we will use syncFileRead Operation, means some process should initiate the file read process and it is an outbound operation and process can’t begin with Sync File read.

48. Can We Use A File Adapter To Get A File Without Reading Its Content?

Ans:

Yes, by selecting the Do not read file content check box in the Jdeveloper wizard while configuring the “Read operation.”

49. How Do We Resubmit A Faulted Process?

Ans:

• Scenario A : The BPEL code uses a fault-policy and a fault is handled using the “ora human-intervention” activity, then the fault is marked as Recoverable and the instance state is set to “Running”.
• Scenario B : The BPEL code uses a fault-policy and a fault is caught and re-thrown using the “ora-rethrow-fault” action, then the fault is marked as Recoverable and the instance state is set to “Faulted”; provided the fault is a recoverable one (like URL was not available).

50. Predefined Errors In Bpel?

Ans:

• Custom errors
• Timed out errors
• BPM errors
• Validation Errors

51.What Is A Throw Activity? What It Is?

Ans:

Throw activity will explicitly throw the fault and this fault will get caught by the catch block and the corresponding actions will get executed.

52. What Is Web Service?

Ans:

Web services are application components, which are self-contained and self describing and provide services based on the open protocol communication (i.e. SOAP UI, HTTP over the net).

53. Difference Between Uri And Url?

Ans:

• A URI is an identifier for some resource, but a URL gives you specific information as to obtain that resource.
• A URI is a URL and as one commenter pointed out, it is now considered incorrect to use URL when describing applications. Generally, if the URL describes both the location and name of a resource, the term to use is URI. Since this is generally the case most of us encounter every day, URI is the correct term.

54. What Is Mediator?

Ans:

• The Mediator is in charge of interconnecting, within an SOA composite application, components that expose different interfaces. In addition, the Mediator can perform duties such as filtering and making routing decisions.
• The composite editor in Jdeveloper gives you the flexibility to define the interface now, to choose an existing interface, or to define the interface later as you wire components to the Mediator.
• Transforming data from one representation to another is, along with routing, one of the key functions of the Mediator.

55. Difference Between Esb And Mediator?

Ans:

• In 10g for routing, separate router need to keep along with ESB for routing and filter expressions.
• Where as in 11g mediator contains routing rules and filter expressions itself.

56. What Is The Difference Between Concrete And Abstract Wsdl?

Ans:

Concrete : Besides the information about how to communicate to the web service, it the information on where the service exist. It has Bindings (Protocol the message should be sent) and Services(has endpoint for each bindings).

Abstract : It has information about how to communicate to the web service like types (Schema), Message (input and output messages service accepts) ,Operations (operation that can be performed on this service) and port Type.

57 . What Is The Service Component Architecture (sca) Used For?

Ans:

Service Component Architecture (SCA) assembly model abstracts the implementation and allows assembly of components, with little implementation details. SCA enables you to represent business logic as reusable service components that can be easily integrated into any SCA-compliant application. The resulting application is known as a SOA composite application. The specification for the SCA standard is maintained by the Organization for the Advancement of Structured Information Standards (OASIS).

58. What Is The Purpose Of Service Data Objects (sdo)?

Ans:

Service Data Objects (SDO) provides a data programming architecture. It provides a standardized view on data, and provides efficient transportation, as well as change capture, in form of a change summary. More specifically, it collects a data graph of related business objects, called DataObjects. This graph tracks the schema that describes the DataObjects. Knowledge is not required about how to access a particular back-end data source to use SDO in a SOA composite application. Consequently, you can use static or dynamic programming styles and obtain connected and disconnected access.

59. What Is The Purpose Of Business Process Execution Language (bpel)?

Ans:

BPEL provides enterprises with an industry standard for business process orchestration and execution. Using BPEL, you design a business process that integrates a series of discrete services into an end-to-end process flow. This integration reduces process cost and complexity.

60. What Is The Purpose Of Xsl Transformations?

Ans:

XSLT processes XML documents and transforms document data from one XML schema to another.

61. What Are The Components Comprise An Oracle Soa Suite Installation?

Ans:

The following components comprise an Oracle SOA Suite installation :

• Service Infrastructure
• Oracle Mediator
• Oracle Adapters
• Business Events and Events Delivery Network
• Oracle Metadata Repository
• Oracle Business Rules
• Oracle WSM Policy Manager
• Oracle BPEL Process Manager (Business Process Execution Language)
• Human Workflow
• Oracle Business Activity Monitoring
• Oracle User Messaging Service
• Oracle B2B
• Oracle JDeveloper
• Oracle Enterprise Manager
• Oracle Service Bus
• Oracle Complex Event Processing

62. What Is The Purpose Of Oracle Mediator?

Ans:

Oracle mediator is used for route, validate, filter and transform data from service providers to external partners.

• Route : Determines the service component (BPEL process, business rule, human task, and mediator) to which to send the messages.
• Validate : Provides support for validating the incoming message payload by using a schematron or an XSD file.
• Filter : If specified in the rules, applies a filter expression that specifies the contents (payload) of a message be analyzed before any service is invoked.
• Transformation : If specified in the rules, transforms document data from one XML schema to another, thus enabling data interchange among applications using different schemas.

63. What Is The Purpose Of Oracle Service Bus?

Ans:

Oracle Service Bus provides standalone service bus capabilities, enabling separation between application developers and target systems or services. Oracle Service Bus receives messages through a transport protocol such as HTTP(S), JMS, File, and FTP, and sends messages through the same or a different transport protocol. Service response messages follow the inverse path. Oracle Service Bus handles the deployment, management, mediation, messaging, security and governance of implementing SOA to enterprise applications.

64. What Is The Purpose Of Oracle Adapters?

Ans:

Oracle Adapters use JCA (Java Connector Architecture) technology to connect external systems to the Oracle SOA Suite. Oracle SOA Suite provides the following technology adapters to integrate with transport protocols, data stores, and messaging middleware :

• BAM
• FTP
• Java Messaging Service (JMS)
• Advanced Queuing (AQ)
• Files
• Message Queuing (MQ) Series
• Legacy Adapters
• Application Adapters

65. What Is The Purpose Of Business Events?

Ans:

Business events are messages sent as the result of an occurrence or situation, such as a new order or completion of an order. In Oracle SOA Suite, the mediator service component subscribes or publishes events. When an event is published, other applications can subscribe to it.

66. What Is Oracle Metadata Repository?

Ans:

Oracle Metadata Repository MDS stores business events, rulesets for use by Oracle Business Rules, XSLT files for Oracle Service Bus and Oracle Mediator, XSD XML schema files for Oracle BPEL Process Manager, WSDL files, and metadata files for Complex Event Processing.

67. What Is Oracle Business Rules Used For?

Ans:

Oracle Business Rules, initiated by a BPEL process service component, enable dynamic decisions at runtime. In addition, the human task and mediator service components can make use of rules for dynamic routing.

68. What Is The Purpose Of Oracle Wsm Policy Manager?

Ans:

Oracle WSM Policy Manager provides the infrastructure for enforcing global security and auditing policies in the Service Infrastructure.

69. Can I Buy An Soa Or Must I Build One?

Ans:

To move your organization toward greater service orientation, you need to take a balanced approach to building versus buying. To create the infrastructure for an SOA, you’ll need the right commercial off-the-shelf software that complements (rather than replaces) your existing IT infrastructure. This is a “buy” statement. On the “build” side, you may also choose to access know-how and hands-on involvement to use these software products effectively and get the most out of them. This infrastructure and the associated tools can help you create the business services that run on your SOA. Again, there is some “building” associated with this. So the real answer is that you need a certain measure of both building and buying.

70. What are the types of MDS Repository?

Ans:

File-Based & DB Based.

71.What is SOAP?

Ans:

SOAP is a simple XML-based protocol to let applications exchange information over HTTP.

72. What are the types of Adapters?

Ans:

Transactional & Non- Transactional Adapter

73.What is XML Schema?

Ans:

An XML Schema describes the structure of an XML document.

74.What is the target namespaces function?

Ans:

The targetNamespace declares a namespace for other xml and xsd documents to refer to this schema. The target prefix in this case refers to the same namespace and you would use it within this schema definition to reference other elements, attributes, types, etc. also defined in this same schema definition.

75. What type of WSDL file we usually keep in MDS?

Ans:

We usually keep Abstract WSDL’s only in MDS.

76. What is File ChunkedRead?

Ans:

This is a feature of Oracle File and FTP Adapters that uses an invoke activity within a while loop to process the target file. This feature enables you to process arbitrarily large files.If an invalid payload is provided, then ChunkedRead scenarios do not throw an exception. When a translation exception (bad record violating the NXSD specification) is encountered, the return header is populated with the translation exception message that includes details such as line and column where the error occurred. All translation errors do not result in a fault. These errors are manifested as a value in the return header. You must check the jca.file.IsMessageRejected and jca.file.RejectionReason header values to ascertain whether an exception has occurred. Additionally, you can also check the jca.file.NoDataFound header value.

77. What are the Multiple Directories supported in File & FTP adapter?

Ans:

The Oracle File and FTP Adapters support polling multiple directories within a single activation. You can specify multiple directories in JDeveloper as opposed to a single directory. This is applicable to both physical and logical directories.

78.What is the DB-Based MDS Repository?

Ans:

Database-based repositories are used in production environments where robustness is needed. These repositories are created using the Repository Creation Utility (RCU) application from Oracle. This utility helps with the creation of a new database schema with its corresponding tables and objects. Repositories can later be registered or deregistered via the Oracle Enterprise Manager Fusion Middleware Control console.

79. Which configuration file store MDS configurations?

Ans:

The adf-config.xml file is a configuration file that is used to store MDS Configurations.

80. What is OWSM?

Ans:

OWSM stands for Oracle Web Service Manager. Oracle Web Services Manager offers a comprehensive and easy-to-use solution for policy management and security of service infrastructure. It is a standalone platform for securing and managing access to web services.

81.What is an echo in Oracle Mediator?

Ans:

The purpose of the echo option is to expose all the Oracle Mediator functionality as a callable service without having to route it to any other service. For example, you can call an Oracle Mediator to perform a transformation, a validation, or an assignment, and then echo the Oracle Mediator back to your application without routing it anywhere else.

For synchronous operations with a conditional filter, the echo option does not return a response to the caller when the filter condition is set to false. Instead, it returns a null response.The echo option is available for asynchronous operations only if the Oracle Mediator interface has a callback operation. In this case, the echo is run on a separate thread.

82.Can we generate custom OWSM policies?

Ans:

Yes, we can create custom OWSM policies.

83. What is Schematron Validation?

Ans:

Schematron is an XML schema language, and it can be used to validate XML contents in an XML payload.

84. Difference between Read & Sync-Read operation in File & FTP adapter?

Ans:

Read is used when Polling is required to be done while SyncRead is used when you need to read the file in between the flow i.e you want to have asynchronous communication.

85. How to get Fault Trace in CatchAll block?

Ans:

By using getFaultAsString() function.

86. Which is a static routing rule support fault policy?

Ans:

Parallel rules only.

87. How many faults can Oracle Mediator service engine throw?

Ans:

Only One

{ http://schemas.oracle.com/mediator/faults } mediatorFault.

88. What are the Standard Faults in Mediator?

Ans:

Mediator has only one standard fault.

{ http://schemas.oracle.com/mediator/faults } mediatorFault.

89. What is File Debatching?

Ans:

When a file contains multiple messages, you can choose to publish messages in a specific number of batches. This is referred to as debating. During debatching, the file reader, on a restart, proceeds from where it left off in the previous run, thereby avoiding duplicate messages. File debatching is supported for files in XML and native formats.

90. Types of Rejection Message Handler?

Ans:

• Web Service Handler
• Custom Java Handler
• JMS Queue
• File

91. What is inline schema?

Ans:

Inline schemas are XML schema definitions included inside XML instance documents. Like external schema documents, inline schemas can be used to validate that the instance matches the schema constraints.