16. What are the appserver components?
Admin server, web container, ejb container, j2c service, naming server, messaging engine, security server.
17. What is cluster?
A cluster is a set of application servers that are managed together and participate in workload management. In a distributed environment, you can cluster any of the WebSphere Everyplace Access server components. Each server is installed on a separate node and managed by a Network Deployment node
18. What is meant by Asymmetric Cluster and how it works?
Clusters are groups of servers that are managed together and participate in workload management. A cluster can contain nodes or individual application servers.
In an asymmetric cluster, business logic is split into partitions, where each partition can be the sole accessor of a set of underlying data. As a result, each node in the cluster can implement its own local cache (and be the sole accessor of that data), resulting in high performance reading and writing without the need to maintain a distributed cache between cluster nodes.
Asymmetric clustering proposes an architecture that is almost opposite to the typical stateless server farm where the entire app is replicated across machines, some times using distributed caching products for performance increasing
19. Difference between horizontal clustering and vertical clustering?
Ans) the main difference between horizontal cluster and vertical cluster are:
We can configure the cluster members on the same node in the vertical clustering, whereas in horizontal clustering cluster members will be there on different nodes. In other words A WebSphere cluster consists of having multiple application servers (cluster member or clones) across a machine (Vertical Cluster) or across several machines (Horizontal Cluster).
20. What about master repository?
Deployment manager contains the MASTER configuration and application files. All updates to the configuration files should go through the deployment manager.
21. How to hit application without hitting the web server?
Web container port on application server
22. Several types of log files in the appserver?
system out, system err, trace, native out, native err, activity.
23. What about IHS?
Ans: IHS (IBM HTTP Server) is one of the web servers. It serves the static content only and it takes up only http requests.
24. What is the global security?
It provides the authentication and authorization for websphere application server domain (administration client or console).
25. How to configure the global security?
Open console and then select security option in the right side menu, and then select local OS registry in the user registry, then enter the username, passwords. And again select global security then LTPA option then provide the password, then save the configuration. And restart the deployment server and then re login the console.
26. How you get node agent……what you have to install to get node agent?
Custom Profile.
27. Some application not accessing, so what is the problem? This information which log file contains?
System out, system err.
28. Application installed but not working. What are troubleshooting steps?
See jvm & application are up, check plugin-cfg.xml file for the root context used by the web application if it does not exist generate plug-in and restart web server.
29. What is diff b/w type4 and type2?
type4 type2
It is pure java oriented 1.it is not a pure java oriented driver 2.require client side software 2.no need any client software
30. In type3 client software which machine you have install?
Server side machine
31. Configure the plug-in through admin console is possible or not?
Possible
32. What is a managed web server?
Remote web server access through local (dmgr/cell)
33. two databases there (oracle and db2),so I want 3 data sources for oracle and 2 data sources for db2 so create 3 data source names for oracle and 2datasourcename for db2 is possible or not?
Possible
34. What is JNDI?
We can register resources in the application server’s java naming and directory interface (JNDI) namespace. Client applications can then obtain the references to these resource objects in their programs. (Or) jdbc is a low level pure java API used to execute SQL statements.
35. Who to disable the security?
Open the admin console expands the security, select the global security we are going to uncheck the enable box and save. Restart the servers and re login admin console. (Or)
Antoher way open the console (command prompt)
C: IBM\Websphere\ AppSrv\bin>wasadmin –conntype none
Enter this
Wasadmin>security off
36. Which type of driver using?
Ans: Type 4 driver it is thin driver. It is more performance on other driver. It is pure java oriented, require client side software.
37. How many ways we can federate the Node?
Ans: Before federating any Node we must make sure
Application server should be started on the Node to be added
We need to find the SOAP connector for DMGR (we can find this in communication section in the detailed page for the application server (DMGR) default is 8879)
From the Admin Console:
Select System Administration --> Nodes --> Add Node
Select Managed Node and click next then specify the Hostname of the Node to be added to the cell. Then select the connector type (SOAP or RMI) and connector port. If security is enabled provide user id and password and include application (if required).....
ii) Using the Add Node Command:
To use Add Node commands do the following
Open a command line window on the system that has the running stand –alone application server
Change the directory to
Execute “Add Node” Command
Syntax with Ex:
Options include like
-conntype [SOAP/RMI]
-includeapps (It includes installed application on the stand alone Node)
Note: We can add Node from DMGR installed system as well, in this option we need to give the Host name and port number of the stand alone application server’s credentials instead of DMGR’s.
How many ways we can synchronise a node?
We can Sync Node in two ways
From Command prompt: stop the Node then issue the “SynNode” command in the command prompt.
-username
-password
-restart
-conntype
-quit
-stopserver
2) From Admin Console:
Select System Administration --> Nodes--> Synchronise (Select the Particular node to sync)
38. URL is not accessing at the time what we have to do?
We are taking a screen short from customer and description a bout that issues that means how long this is not able to access applications are spouse if its performance issues. That all the details a bout that issues will be mention in this description. If we understand that issues clearly. I will get the permission my TL to start working on those issues. Spouse if we didn’t understand that issues clearly then we make concall with the person how hade created a ticket and w3ith the on site team.
Spouse if issues is related with unable to access applications at that the time I will check. Wither the plug-in.cfg.Xml file generated and propagated. I will generate plug-in cfg.Xml file and propagated plug-in cfg.Xml file.
Then we will check server status, applications and logs.
39. Who to raise the tickets?
We have using the BMC Remedy tool so that addressing tickets
First step is we have log in the BMC tool
Once you login to BMC Remedy tool it will travels points to home page.
In home page we will have all details like case ID—that is ticket id, how to rise the ticket. What are first name, last name, phone, Email then which department that is all information who raised the ticket.
Then we have option call general .Inside general case type, cat agree type, severity of ticket, status, pending options are there.
If you want information about ticket we have to open log notes. It will give about the information. Which have been accrued?
In status in New, working progress, pending, resolved, closed.
Here one more option is called resolution. In resolution restored by CUID is ticket owner, first name, last name, restoration text what is the root cast of issue.
Impact details in outage T/F. that means applications are true or false.
40. Which ticking tool you’re using?
BMC Remedy tool
Interview Preparation 2
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