How would you monitor a WebLogic instance (hint: console, Nagios/ Oracle Enterprise Manager and or Grid Control/ HP Open View)
Need for SOA Governance?
Have you read some EAI books, and which EAI patterns do you remember?
Do you know which are the main internal variable in OSB?( Hint: body, inbound, outbound)
If a process is long running, with human interaction, how would you manage it? (hint asynchronous)
Explain me how you would handle errors in OSB (hint: eror handler stage level, proxy level, …)
How do you monitor performance and response time and Errors using the OSB console? (hint SLA -Alert, logging and reporting actions)
What is a fault in OSB? How is represented? (hint: $fault details, ….)
Which problem do you face when deploying an integration solution to a new environment, and how do you solve this (customization plans/files)
When is it necessary to apply compensation? (hint error handling, non transactional)
Which features are available in BPEL which are not in a general purpose programming language like Java?
How would you test an integration solution?
What is JNDI?
You have a CSV or EDI file, how do you tranform it in XML?
What is Oracle RAC? How do you configure WebLogic to take advantage of RAC (hint: Multidatasource)
Which options do you have to enforce data integrity in a DB (constraints, triggers, range check, not null, foreign keys)
What is a WSDL?
How can we reuse services?
How would you configure WebLogic domains without using manual operations (hint: WLST, domain templates)
Difference between a Proxy service and Business Service?
What are JMX Beans, what to they do …how can we use it
How would you create and monitor a JMS queue with scripts? (hint: WLST, eventually Java)
Can you start and stop a WebLogic server from WLST, and how? (hint: nmConnect, nmStart, Node Manager)
Which options do you have to target a JMS queue? (hint: cluster, individual WLS server, individual JMS server, subdeployments)
How do you ensure that operations can continue without disruption even if a WLS instance goes down
(hint: cluster, whole server migration, service migration, load balancing with failover)
How do you change the log properties? Which are the main logs you have for weblogic and osb?
Which metrics would you monitor in WLS for a JDBC Data Source?
How would you implement the following integration interface?
. Our source system is sending the requests via FTP (it writes into ftp) and the target destination is a database. (hint database and ftp adapters).
. we want the implementation not to manage the connection details to the ftp or the database (JCA)
. We want messages to be persisted (persistent stores, jms queues)
. control error (error handler strategies)
. monitor the execution (tracking actions logging messages) end to end (messages id)
. in case something is failing we want ensure the database integrity so if we update the database and before ending the process something fails we want the database to be back to the original status( XA)
. The source message has a different format than the target (hint: xquery, xslt)
. we want to ensure that messages are processed in order (sequences, unit of order)
. We need to ensure that the message we send and we receive is valid according to the input and output schemas (hint validate actions)
. While mapping the values some of them , for example currency or country codes are represented in a different format in each system. For example EURO and EUR, POUND and PND, ... (Hint: domain value mapping)
. We want the service to be reused and accessible from multiple systems (service registry and service repository)
. Finally we would like to have the schemas in a repository (metadata repository) "
Please explain how to create a queue in FIFO mode in Weblogic? (Hint :one consumer)
What is a Canonical Data model? (hint common data, reusability)
Would you mind to explain the difference between async and synch behaviour?
Can you explain me something about ORM (Object Relational Mapping)
How do you ensure that a request is persisted and executed even in case of system crash (hint: persistence, transactions)
What is a transactional resource? What is a XA interface?
How do you configure a UnitofOrder in Weblogic? A persistent store? A remotequeue?
Is it possible a Managed server continue providing services in spite of shutting down the admin server? How to?
Showing posts with label questions. Show all posts
Showing posts with label questions. Show all posts
Sunday, October 25, 2015
WebLogic Administrator Questions
How can you see if your OS is running a 64 or 32 bit OS
Can you explain me the basic Linux directory structure (/var/log/, /etc, /opt. /dev, /users)
How can you see how much disk space is left
Can you see what processes are running
Name some scheduling techniques
What is VM ware, have you ever worked with it, name some vendors
how do you check the hostname of a machine
Can you explain me something about Domain Names, how can you override domain names
Name some infrastructure monitoring software (Nagios/ Big Brother/ HP Open View)
Would you mind to explain me what a Proxy service is?
Would you mind to explain me what Business service is?
What are JMX Beans, what to they do …how can we use it
Name some Monitoring Best Practices for Middleware environments
Name some Monitoring Products for Middleware environments
How is your knowledge of Oracle Enterprise Manager and or Grid Control
What is the difference between tablespace/ schema
What is the difference between active and passive FTP
What is the difference between SFTP and FTPS
Name some Configuration Management Systems, (Puppet / CFEngine) have you ever worked with it
Do an analysis of a problem in a 4 tier system…from frontend to backend…where do you start/ escalate
What can you tell about SMNP, (trap destination/ trap translator)
How would you create and monitor a JMS queue with scripts? (hint: WLST, eventually Java)
Can you start and stop a WebLogic server from WLST, and how? (hint: nmConnect, nmStart, Node Manager)
Which options do you have to target a JMS queue? (hint: cluster, individual WLS server, individual JMS server, subdeployments)
Why would you use a Distributed Queue? (hint: high availability, load balancing)
How do you ensure that operations can continue without disruption even if a WLS instance goes down
(hint: cluster, whole server migration, service migration, load balancing with failover)
How to you check for Stuck Threads in WLS (hint: thread dump)
How do you update a Deployment (deployment plan)
Which are some common JCA Adapter and how do you set them up (hint: FTPAdapter, FileAdapter)
How to verify which Patches are applied to WLS, and how to apply a new Patch ?
How do you change the log properties? Which are the main logs you have for weblogic and osb?
Which metrics would you monitor in WLS for a JDBC Data Source?
What does a 'lock' mean when you startup weblogic? How to solve it?
In linux what command tells you the dependencies of a .so file
How can you see what processes are holding which ports (hint netstat -antpu)
Can you explain something about certificates (SSL technology , hint : public private key)
Can you explain me something about ORM (Object Relational Mapping)
Name some storage technologies (RAID - vs Striped), what are the advantages disadvantages
What can you tell about ORACLE RAC technology
How do you configure a UnitofOrder in Weblogic?A persistent store? A remotequeue?
Is it possible a Managed server continue providing services in spite of shutting down the admin server? How to?
Can you explain me the basic Linux directory structure (/var/log/, /etc, /opt. /dev, /users)
How can you see how much disk space is left
Can you see what processes are running
Name some scheduling techniques
What is VM ware, have you ever worked with it, name some vendors
how do you check the hostname of a machine
Can you explain me something about Domain Names, how can you override domain names
Name some infrastructure monitoring software (Nagios/ Big Brother/ HP Open View)
Would you mind to explain me what a Proxy service is?
Would you mind to explain me what Business service is?
What are JMX Beans, what to they do …how can we use it
Name some Monitoring Best Practices for Middleware environments
Name some Monitoring Products for Middleware environments
How is your knowledge of Oracle Enterprise Manager and or Grid Control
What is the difference between tablespace/ schema
What is the difference between active and passive FTP
What is the difference between SFTP and FTPS
Name some Configuration Management Systems, (Puppet / CFEngine) have you ever worked with it
Do an analysis of a problem in a 4 tier system…from frontend to backend…where do you start/ escalate
What can you tell about SMNP, (trap destination/ trap translator)
How would you create and monitor a JMS queue with scripts? (hint: WLST, eventually Java)
Can you start and stop a WebLogic server from WLST, and how? (hint: nmConnect, nmStart, Node Manager)
Which options do you have to target a JMS queue? (hint: cluster, individual WLS server, individual JMS server, subdeployments)
Why would you use a Distributed Queue? (hint: high availability, load balancing)
How do you ensure that operations can continue without disruption even if a WLS instance goes down
(hint: cluster, whole server migration, service migration, load balancing with failover)
How to you check for Stuck Threads in WLS (hint: thread dump)
How do you update a Deployment (deployment plan)
Which are some common JCA Adapter and how do you set them up (hint: FTPAdapter, FileAdapter)
How to verify which Patches are applied to WLS, and how to apply a new Patch ?
How do you change the log properties? Which are the main logs you have for weblogic and osb?
Which metrics would you monitor in WLS for a JDBC Data Source?
What does a 'lock' mean when you startup weblogic? How to solve it?
In linux what command tells you the dependencies of a .so file
How can you see what processes are holding which ports (hint netstat -antpu)
Can you explain something about certificates (SSL technology , hint : public private key)
Can you explain me something about ORM (Object Relational Mapping)
Name some storage technologies (RAID - vs Striped), what are the advantages disadvantages
What can you tell about ORACLE RAC technology
How do you configure a UnitofOrder in Weblogic?A persistent store? A remotequeue?
Is it possible a Managed server continue providing services in spite of shutting down the admin server? How to?
OSB developer questions
How do you check the linux distribution version
How can you see if your OS is running a 64 or 32 bit OS
Can you explain me the basic Linux directory structure (/var/log/, /etc, /opt. /dev, /users)
How can you see how much disk space is left
Can you see what processes are running
What is the difference between an abstract class and an interface
Can you name some JAVA open source frameworks
What is the difference between a script and a programming language (to fill time….idle talk)
Would you mind to explain me what a Proxy service is?
Would you mind to explain me what Business service is?
What do you use for mapping in OSB?
When do you use Xpath?
What is a XSD? What is a simple type? What is a complex type?
What is a Namespace?
How do you define a list of elements?
How do you call (invoke) a service?
How do you create a FILE adapter?
How do you test a HTTP service? (hint: OSB Console, SOAPUI…)
How do you monitor a BPEL execution? Which is the tool provided in SOA for doing it?
What is the structure of a WSDL
"Are you familiar with OSB and SOA suite, so In which case you would use OSB and in which one you would use SOA?
Tell me advantages and disadvantages."
Would you mind to tell me which are your prefered options for reporting and tracking information in OSB?
A Proxy or Business service points to endpoints (URIs) that will differ in each environment (DEV, TST, PROD…). How could you deploy your interface and change those endpoint URIs without modifying them manually? Which tool is provided by OSB?
Is is it possible to use java programs in OSB? How do you do it? (hint: java callout, custom xpath)
In case you want to implement an interface that processes in parallel, How do you do it in OSB?
How could you obtain a data from the database based on an id? Do you know how to do a lookup (hint: multiple options are available)?
Which are the main actions provided by OSB for invoking services?
"Imagine we are going to design the schemas for a renting agency
This schema is for defining the message that will be used when a customer rents a car
please provide me per each situation how you would implement it in XSD
- You can rent a car or a lorry, both contains similar fields (price, number of days to be rented, ...)
but they also have different elements specific to the type of vehicle. Please tell me the mode you would implement
it for reusing the common elements. (hint: extending or aggregating)"
"In the rent contract when you specify the vehicle you can choose lorry or car and it's mandatory to have one of the 2.
explain me how to represent that concept in XSD. (hint: choice, minoccur, maxoccur)"
In SOA/XSLT which function is used for getting a value from the database based on a value you pass?
"How can you map standard definitions like currency, country, ... that have a different representation in the Source system and in the target system?
for example EUR in system A and EU in system B represents Euro (hint: DVM lookup)"
How could you implement sequences in SOA? (hint: mediator sequencer)
Are you able to define custom XPATH functions?
How could you implement a synchronous BPEL process? and Asynchronous?
If an error occurs in a Message Flow, which options do you have to handle it?
"If you need to implement file poller Interface that transforms the message and then sends the message to a FTP.
How could you do it? and In case you want to raise an error if it takes longer than 90 seconds ? How could you do it? (hint: timeout, alert)"
"If you need the messages to be sent in order so the behaviour will be First Input and First Output,
How did you implement it? (hint: single consumer)"
How can you see what processes are holding which ports (hint netstat -antpu)
Can you explain something about certificates (SSL technology , hint : public private key)
Can you explain me something about ORM (Object Relational Mapping)
Would you mind to give me a sample of an scenario when you need to use Publish, CallBack and Route actions?
Explain the reason of choosing that action.
Can you explain me how to configure a transactional proxy service? Which are the main OSB actions involved?
Which properties are used? Which Qos will you use?"
Which kind of objects could be handled by OSB from a Java Callout? (hint: primitive types, arrays)
How can you see if your OS is running a 64 or 32 bit OS
Can you explain me the basic Linux directory structure (/var/log/, /etc, /opt. /dev, /users)
How can you see how much disk space is left
Can you see what processes are running
What is the difference between an abstract class and an interface
Can you name some JAVA open source frameworks
What is the difference between a script and a programming language (to fill time….idle talk)
Would you mind to explain me what a Proxy service is?
Would you mind to explain me what Business service is?
What do you use for mapping in OSB?
When do you use Xpath?
What is a XSD? What is a simple type? What is a complex type?
What is a Namespace?
How do you define a list of elements?
How do you call (invoke) a service?
How do you create a FILE adapter?
How do you test a HTTP service? (hint: OSB Console, SOAPUI…)
How do you monitor a BPEL execution? Which is the tool provided in SOA for doing it?
What is the structure of a WSDL
"Are you familiar with OSB and SOA suite, so In which case you would use OSB and in which one you would use SOA?
Tell me advantages and disadvantages."
Would you mind to tell me which are your prefered options for reporting and tracking information in OSB?
A Proxy or Business service points to endpoints (URIs) that will differ in each environment (DEV, TST, PROD…). How could you deploy your interface and change those endpoint URIs without modifying them manually? Which tool is provided by OSB?
Is is it possible to use java programs in OSB? How do you do it? (hint: java callout, custom xpath)
In case you want to implement an interface that processes in parallel, How do you do it in OSB?
How could you obtain a data from the database based on an id? Do you know how to do a lookup (hint: multiple options are available)?
Which are the main actions provided by OSB for invoking services?
"Imagine we are going to design the schemas for a renting agency
This schema is for defining the message that will be used when a customer rents a car
please provide me per each situation how you would implement it in XSD
- You can rent a car or a lorry, both contains similar fields (price, number of days to be rented, ...)
but they also have different elements specific to the type of vehicle. Please tell me the mode you would implement
it for reusing the common elements. (hint: extending or aggregating)"
"In the rent contract when you specify the vehicle you can choose lorry or car and it's mandatory to have one of the 2.
explain me how to represent that concept in XSD. (hint: choice, minoccur, maxoccur)"
In SOA/XSLT which function is used for getting a value from the database based on a value you pass?
"How can you map standard definitions like currency, country, ... that have a different representation in the Source system and in the target system?
for example EUR in system A and EU in system B represents Euro (hint: DVM lookup)"
How could you implement sequences in SOA? (hint: mediator sequencer)
Are you able to define custom XPATH functions?
How could you implement a synchronous BPEL process? and Asynchronous?
If an error occurs in a Message Flow, which options do you have to handle it?
"If you need to implement file poller Interface that transforms the message and then sends the message to a FTP.
How could you do it? and In case you want to raise an error if it takes longer than 90 seconds ? How could you do it? (hint: timeout, alert)"
"If you need the messages to be sent in order so the behaviour will be First Input and First Output,
How did you implement it? (hint: single consumer)"
How can you see what processes are holding which ports (hint netstat -antpu)
Can you explain something about certificates (SSL technology , hint : public private key)
Can you explain me something about ORM (Object Relational Mapping)
Would you mind to give me a sample of an scenario when you need to use Publish, CallBack and Route actions?
Explain the reason of choosing that action.
Can you explain me how to configure a transactional proxy service? Which are the main OSB actions involved?
Which properties are used? Which Qos will you use?"
Which kind of objects could be handled by OSB from a Java Callout? (hint: primitive types, arrays)
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