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THURSDAY, SEPTEMBER 30, 2010

TIBCO BW FAQ'S

TIBCO BW QUESTIONS

What is the use of service container?

In the latest version of TIBCO Active Matrix Business Works a new feature called Service

container is added. In this service container we can add number of  EAR files and run all

the services simultaneously. With the Service container feature we can add and upgrade

processes without bringing down other running processes.

In how any ways can we create EAR files.

We can build EAR files in 2 ways. One method is using the Enterprise Archive pallete in

the Tibco designer and adding the process archive we can build EAR file.

Other method is from the cmd prompt. We use the command appmanage and buildear.

What is Schema and why do we create schema.

Schema is used to create a XML schema file in which we add the variables which we want

to use in our designer process. We can create the elements under which we can add the

typed variables. The structure formed will be in the form of tree structure.

What is the use of confirm activity.

Confirm activity is used to confirm the success of a activity that have confirmable

messages. For example if certain process starts on reception of a message then if that

process starts the conf irm activity sends a confirm message to the sender  of the

message.

What are the different modes of tibco BW installation.

There are 3 modes installation .

They are

a) GUI

b) console

c) silent

When we save a project what files are created under the saved project folder.

In that folder we see the Aeschema folder, all processes create in that project and the

vcrepo.dat file.

what is AESchema?

Its a active enterprise schema

The AESchema resource contains folders for the classes, sequences, etc. to be used by

the adapter if you are creating an SDK-based adapter, you can configure Schema

resources using the AESchemas.

By default AEschema folder will come , You can't delete this folder .

What are the contents of vcrepo.dat

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This files contains the display name , RV encodings and description.

What is grouping activity?

Grouping activity is used to group certain activities used in the designer so that we can

loop those activities and iterate the group with conditions.

What is the condition for a process in order to build the EAR file?

We need to have a process starter.

How can we design exception handling?

The basic method is by routing the process to another sub process whenever error occurs

by using the error transition.

What is the use of Render XML pallet.

It is used to create a XML file by creating the tags used in the xml file.

What are the elements in the WSDL file.

In abstract WSDl file we have the information about the messages ( request, reply) port

type, operation. In concrete in addition to above we have the transport information.

What is the use of global variables?

Global variables are useful in order to provide dynamic input at the run time.

What is custom activity?

Custom activity is useful when we want others to use our process and not allow them to

view the contents of the process. We can add this process into our MY Pallete section.

We can directly use this process by dragging it into our process.

In web service in how many ways can we create connections.

2 ways. HTTP and JMS.

How does the file poller activity works.

This is a starter activity which starts the process whenever there is update for the file that

is specified.

What is the use of project template?

In project template we can save our standard processes that we want to use in future.

These processes are generally the ones which have the commonly used activities.

What is the optimum maximum number of connections in JDBC?

10

What is sub process and what is its use?

Whenever we call a process from another process , the called processbecomes the

subprocess. Sub process helps in reducing the complexity of the design by assigning the

activity in other process.

What is TRA.

Tibco Runtime Agent is the main frame work for all the tibco softwares. It provides theruntime agent and monitoring agent. All the libraries required by the designs are provided

by TRA.

What are the process variables that are available to all activities as inputs.

global variables and process context.

What are break points?

Break points are used to check the inputs and outputs of each activity during testing the

design so that we can debug our design. We can place the check points for all activities

on input and output side.

What re the encoding techniques in WSDL?

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Encoded and literal.

What are the conditions in transitions?

Success, Success with condition, Success with no condition and error.

What are the different variables in BW?

Global variables, Shared variables, process variables and job shared variables.

What is the purpose of autocommit command

Causes the change to the configuration files to be saved automatically into files on disk.

What is the purpose of commit command

Commits all configuration changes into files on disk

Will the commit occur in "autocommit" command if there is error in script we

run?

No - If the "ignore" parameter is not specified.

What is the command to know the Database Store Files?

show db []

How can we compress the Database store files?

compact []

Will both the asynchronous and synchronous database files can be compressed a t

a time?

No - Each file has to be compressed separately

What are the types of durable subscriptions we have?

Static - The Specification will be written to the durables.conf file

Dynamic

Is the commands "show server" and "info" are same in EMS Server 

Yes - Both the commands Shows server name and information about the connected

server.

What is the difference between the "disconnect" and "shutdown" commands

disconnect - the server be active, only the admin tool get disconnected from server.

shutdown - the server itself shuts down by confirming with the user.

alias file

TIBCO Designer allows you to create alias to resources that are to be reused in other 

projects. Alias are used in two resources, the AliasLibrary and the LibraryBuilder. The

 AliasLibrary resource allows you to load files stored in the file system into your project.

The LibraryBuilder resource allows you to build a design-time library that includes

resources defined in one project that can be shared with other projects.

How to change the global variable at runtime?

To Change Global Variables for a Service or Process

1. In TIBCO Administrator, click Application Management.

2. Select an application and expand it.

3. In the Configuration Builder pane, click a service or process name. A service is

named with a .arr suffix. A process is named with a .par suffix.

4. Click the Advanced tab.

5. Change global variables as required. Be sure to use valid XML characters only.

6. Click Save.

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How to manage the code in tibco after development?

n realtime we have a configuration management tools like VSS, CVS, Star team etc

 All project documents and source code will be stored into the given

tools. If any developer wants to work on documents or source code they have to checkout

from the tool.

Once development is over and tested , Again developer needs to checkin that same

source code into the tool .

Note: Once a developer check out the code from the tool, other developer can't work on

that code .

Coming to the migration of application . We will migrate only ear file from one environmentto another environment, only we will change the global variables

Check Point Description

The Checkpoint activity performs a checkpoint in a running process instance. A

checkpoint saves the current process data and state so that it can be recovered

at a later time in the event of a failure. If a process engine fails, all process

instances can be recovered and resume execution at the location of their last

checkpoint in the process definition. If a process instance fails due to an

unhandled exception or manual termination, it can optionally be recovered at a

later time, if the process engine is configured to save checkpoint data for failed

processes

Storage Details:

Check point will stores in two places File and DB

Coming to the db, you have to select a Database before that you need to create database

connection and deploy.

Location:

Check point file location will be in Par file (Tibco Administrator )

if you are working on local machine

C:\Documents and Settings\\.TIBCO\working\\jdb\\.job

How can we configure the SSL parameter?

In BusinessWorks we have JMS Connection, HTTP, ADB Adapter etc which have SSLfeatures. They can be used by checking the checkbox and doing corresponding settings

for certificates and identity objects.

The security over SSL is provided by using cryptography which in turn uses the

certificates and the cryptographic algos like RSA, Message Digest, DES and others to

change the message into encrypted message. This encrypted message can only be

understood if we have the certificates.

The SSL configuration needs to be done in the administrator. The transportation can be

invoked by components and by the browsers as well. The underlying SSL basics include

an initial handshake, an exchange of digital certificates, the use of public and private keys

to validate identities through a challenge, and finally the set up of an agreed-upon key to

be used with a symmetric cipher.

The certificates can be found at the given directory

“\jms\bin\certs”

The Key players and the terms are:

Client ---Initiator 

Server---Responder 

Certificate Authority or trusted third-party --The party which issues the Certificates.

Identity Object---Role that the BusinessWorks process assumes.

Following are the trusted SSL Certificate formats:

§ P12

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§ P7

§ PEM

§ DER

§ EPF

§ keystore

Following are the identity file formats:

§ P12

§ P7

§ PEM

§ DER

§ Keystore

§ EPF

SSL configuration

§ Copy C:\tibco\jms\bin\tibjmsdssl.conf C:\tibco\jms\bin\tibjmsd.conf.

§ Tools->Trusted Certificates->Import into PEM format

§ Import “server_root.cert.pem” (CA), and “server.cert.pem” (Server Cert)

These are the basic concepts and configuration required for the SSL to be used in BW.

 Apart from these the

 Administrator needs to be configured. If the HTTP is used than the browser also needs to

have certificate.

What is LDAP?

Lightweight Directory Access Protocol(ldap) is a protocol for communication between

LDAP servers and LDAP clients. LDAP servers store "directories" which are accessed by

LDAP clients. LDAP communications happens at the default port 389. If we are using a

secure SSL connection, the protocol will be "ldaps" on port 636. LDAP is called

lightweight because it is a smaller and easier protocol which was derived from the X.500

DAP (Directory Access Protocol) defined in the OSI network protocol stack.

The main benefit of using LDAP is that information for an entire organization can be

consolidated into a central repository. For example, rather than managing user lists for 

each group within an organization, you can use LDAP as a central directory accessible

from anywhere on the network and because LDAP supports Secure Sockets Layer (SSL)

and Transport Layer Security (TLS), sensitive data can be protected from security threats.

LDAP servers store a hierarchical directory of information called LDAP Directory

Information Tree(DIT). In LDAP, a fully-qualified name of a directory entry is called a

DistinguishedName(DN). Each entry will have a set of attributes. Attributes are name and

value pairs. Each entry in the DIT has a unique identifier. It is the Distinguished

Name(DN). This consists of its Relative Distinguished Name (RDN) constructed from

some attribute(s) in the entry, followed by the parent entry's DN. For example cn=James

Smith, dc=example, dc=com

what is schema of LDAP?

The schema defines the attribute types that directory entries can contain. An attribute

definition includes a syntax, and most non-binary values in LDAPv3 use UTF-8 string

syntax. The schema defines object classes.

Each entry must have an objectClass attribute, containing named classes defined in the

schema. The schema definition of the classes of an entry defines what kind of object the

entry may represent - e.g. a person, organization or domain. Most schema elements have

a name and a globally unique Object identifier (OID).

what is LDIF?

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LDIF (Lightweight Directory Interchange Format) is an ASCII file format used to exchange

data and enable the synchronization of that data between Lightweight Directory Access

Protocol (LDAP) servers. LDIF files are simple text files and can be created and edited

with any suitable text editor. Each line is terminated with EITHER (unix format) OR

(windows format) these files may be created on any OS platform. LDIF is used mainly to

add (import) bulk records into a directory, restore (import) a directory, archive (export) a

directory, apply bulk edits to a directory.

LDAP is extensible and can be used to store any type of data.Two common applications

of LDAP are for computer user/group data, and for address book information (persons,

departments etc). Many e-mail clients support LDAP lookups. Most interesting is that

LDAP is being used as a core technology for most Single Sign On (SSO)implementations.

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2 comments:

 javarevisited said...

Hi,

Good questions s ee here for some more TIBCO Interview Questions.

Thanks

Javinfix protocol tags and s pecification

February 5, 2011 at 7:52 AM

Felipe Torres said...

Thanks for your contribution!

It had helped me so m uch!

February 18, 2011 at 8:37 AM

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