Sunday, 4 March 2012

Weblogic Admin Interview Questions-Part 2


1.      How to know the Managed Servers status, when admin console is not available?
2.      What is the performance issue in weblogic and how can you resolve, explain in brief?
3.      What is the Digital Certificate? How do we generate a Digital Certificate?  
4.      What is Thread Dump? What is the UNIX command to take Thread Dumps?
5.      What is a cluster? What is High Availability and Fail over?
6.      How to handle out of memory in weblogic and if server is getting more requests then what we have to do in production environment?
7.      What is clustering? How do weblogic instances communicate in a clustered environment? In a cluster, if one of the servers has an issue and it is not accessible, will the other servers know about it and how?
8.      What are the roles you have played and what are the day today activities?
9.      WHAT IS TROUBLE SHOOTING IN WEBLOGIC?
10. How to integrate apache webserver with weblogic server? What is the purpose of integrating both?
11. Define the different groups of Users?
12. What are the different thread queues?
13. How will you analyze if a page responds slowly?         
14. What is Work manager? Explain briefly?
15. What are the different types of drivers?
16. What are the various types of log files?
17. What are you commonly used fine tuning commands?
18. What is Session replication? What are the different types of Session Replications?
19. What happens if we change config.xml while server is running?
20. What is HTTP tunneling?
21. What is asynchronous communication? Is there any synchronous communication in JMS?
22. How to find Weblogic Version?
23. What is the use of log4j?
24. What is Work manager?
25. What is virtual host?
26. What is eden size and perm size?
27. What is Weblogic shrink?
28. What is diff b/w JNDI and JDBC?
29. What are the different types of drivers?
30. What driver you are using?
31. What is diff b/w unicast and multicast?
32. When core dump will not be created even if the server crashed?
33. Can we change the heart beat interval?
34. What are the various types of log files?
35. What is WorkManager?
36. What is Multicast IP Address? What are the things done by it? How to
test multicast IP?
37. How to check whether the cluster multicast adress is available or not?
What is the command to check in UNIX environment?
38. What is Virtual Host in Weblogic, how to create it & what is the
advantage ?
39. How can you find the jdbc version on server side?
40. What you do to close the connections automatically in JDBC?
41. What are the things that we take care under Database fine tuning apart
from increasing or decreasing connections?
42. What is MBean, how many types are there?
43. How to restart proxy?
44. Reasons for server crash?
45. Reasons for servers hang?
46. What is the thread hogging?
47. Various garbage collection algorithms?
48. How to find whether the PORT No is free or not?
49. What is the command to find CPU utilization?
50. What is the command to find version of Unix?
51. How to find CPU utilization? What if top command doesn’t work?
52. What are you commonly used fine tuning commands?
53. What is the difference between webservers and Proxy server?
54. How to sort the files?
55. What is Session replication? What are the different types of Session Replications?
56. Which IP segment will you use for Multicasting?
57. Is it possible to manage multiple domains through a single weblogic
admin console?
58. What happens if we change config.xml while server is running?