Best Informatica administrator interview questions with answers – Part 3

21. Can we create multiple integration service on single repository?Answer: Yes it is possible to create multiple integration service on single repository. This is used when you have to choose different code page for different integration service in same repositoryEg: Repository : ASIA_PACIFIC_Repo is used to load the data for countries specific to ASIA PACIFIC to target warehouse. Different Integration service created for non English countries to support different code page (Malaysia, China, Japan, Thailand)

22. What is native users.Answers: Native users are the users created with admin console.

23. What is meant by LDAP usersAnswer: LDAP users are the user which are configured with LDAP server (also may be MS Active directory ) and LDAP is integrated with power center to allow users to provide single sign on

24. What are roles and groups and benefits of using them?25. What is domain and gateway node:Answer: Domain is a single point of entry or the administrative unit in Informatica. All the request from different clients (like Designer) first reaches to domain and then routed to associated services. A gateway node is the node on which a domain is defined.

26. What is difference between a gateway node and worker node?Answer: A gateway node is a node on which domain is defined and it act as a router or administrator to all services. All other nodes in a domain are worker nodes where application services like Informatica services, repository services will be running.

27. What do you understand by SOA of Informatica?Answer: SOA or service oriented architecture allows the Informatica to have services on distributed system. You can define a domain on a node say node1 and repository service on node2, repository service on node3. All nodes can be anywhere within a network. Once a request is made from client it goes to the domain or the gateway node and then it directs the request to the appropriate nodes or services.

28. Is it possible to define a single node as a Gateway node as well as worker node?Answer: Yes it is possible to define a node to act as both gateway node as well as worker node.Eg: The domain is created on node1 and integration services and repository services are also running on the same machine or node. In this case a node will behave both as a domain and a worker node.

29. Can we create a node as a gateway node and the same node can be assigned to a grid?Answer: Yes it is possible assign a gateway node to a grid.

30. Can we create two repositories on same database instance in oracle?Answer: It is not possible to create two repositories on same instance of database in oracle as it will be creating the metadata tables for repository. However it is possible to create two repositories in oracle on same server if the database instance is different.