Wells Fargo in WAS

Part - IV : WebSphere Interview Questions 

1) What are your daily day to day Activates?

A) We have ticketing tools, We have 2 Type of tickets:

1. Change request : scheduled activities like new resources creation, JVM settings, Configuration of the application and development teams raised tickets

2. Incident request : production support or monitoring like up gradation.

We have a dev team; if they found any issues they will raise a ticket.

We have a production support team, and Monitoring team, if they come across some thing abnormal then they will raise a production support tickets.

We are having WAS 5.1 and 6.1, so daily we are having configuration setups for migration, and building the similar environment as 5.1 in 6.1In different boxes as new environment.

Right now I don’t have chance to write new scripts. How to check thread dump in jacl

How do you check the health of the appserver? Is there any tool is avialable with you?
A) We have monitoring tools, at the time issue only, TPV (Tivoli Performance Viewer)/Willy Introscope, and normally it is disabled, at the time of performance issue only we will do monitoring.

2 kinds of monitoring: 1. Availability, 2. performance monitoring 24/7 or not.

L1 team using SiteScope: SiteScope WebSphere Performance Servlet Monitor to monitor the server statistics of IBM WebSphere Server (versions 3.0x, 3.5, 3.5.x, and 4.0) via a WebSphere Performance Servlet. The error and warning thresholds for the monitor can be set on as many as ten performance statistics.

3) Can u configure multpile apache webservers?

A) we can configure in httpd.conf file.
4) Is it possible to configure 10 domain names in apache? if yes? How?
A) we can use virtual hosts.

5) How do you perform heap dump and thread dump?

A) Kill -3 <>
Heap dump relate to jvm memory usage,

Thread dump relate jvm thread usage

6) Is kill -3,kill a process or create a thread dump? explain!

A) kill -3 is used create thread dump.
7) Did u work with any tools which helps you to see the heap dump or thread dump?

A) Heap dump jmap, IBM heap analyzer tool, thread dump using IBM thread analyzer /samurai

8) How to configure security and LDAP?

A) Global security,

Security availability: 1. OS security 2. LDAP (3^rd party security) 3. Custom security(Application from DB)

9) What are 202 errors?

Accepted.
10) In ls -lrt, what t stands for and r stands for l stands for?

A)

-l shows you huge amounts of information (permissions, owners, size, and when last modified.)

-r reverses the order of how the files are displayed.

-t shows you the files in modification time
11) How to check a particular port is working or not in unix?

A) netstat -a | grep 80