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Before attending an interview on webMethods, make sure to be strong in basics. Because basics are the main thing that the interviewers look for. Along with basics, you should also have knowledge of how we can implement the services in webMethods.
In this post, we have put together 30 webMethods interview questions with detailed answers. Go through the below frequently asked webMethods interview questions and answers that help increase your potential in cracking the interview.
Ans: Enterprise application integration (EAI) unites the databases and workflows for business applications. It allows the integration of applications from disparate platforms to share business processes. It simplifies and automates business processes without having to make changes to the existing systems.
Ans: webMethods is an integration platform that focuses on application integration,business process integration, and B2B partner integration. It provides flow services to map any data format into the other format and connects applications together. It was founded by Phillip Merrick and Caren Merrick in 1996 and has later acquired by Software AG in 2007.
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Ans: The webMethods Product Suite contains four modules,
Ans: Below are the tools of webMethods integration.
Ans: When we invoke pub.flow:tracePipeline service, the Integration Server logs the name-value pairs in the pipeline.
Ans: It saves the current pipeline to a specific memory location on the Integration Server.
Ans: We can remove the system locks by making the server-side files of an element as readable. Right-click on the locked element, and select lock properties, to view the server-side files of that element. Make the files as readable to unlock them and click on the refresh button.
Ans: A Web service connector is a flow service that contains input and output signatures. It is generated from the WSDL document in the Integration Server. It invokes a Web Service on a different web server.
Ans: To invoke a service, open a browser and give the below URL.
http://servername:port/invoke/folder.subFolder.subsubFolder/serviceName
Ans: If the server goes down or if there is a problem with the network, the developer gets disconnected from the server. When the server gets back online, the developer will get connected to it automatically, and the session will get restored.
Ans: Open the Integration Server and select 'session' from the toolbar menu. Give the IP address and port details of the server that you want to connect to.Give the username and password and click on 'connect'.
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Ans: We can change the JDK used by webMethods by updating it in either IntegrationServer\in\server.bat file or IntegrationServer/bin/server.sh file. Change the JDK path as follows and save the file.
SET JAVA_DIR=
Ans: Startup services are used to generate initialization files or for preparing the environment. The server automatically executes a startup service when it loads a package.
Ans: Shutdown services are used for executing cleanup tasks like closing files and purging temporary data. It gets automatically executed when a package is unloaded from memory.
Ans: Pipeline refers to a data structure that maintains the input and output values of flow service. It collects inputs and outputs from subsequent services in the flow. When we execute a service in the flow, it will access the data from the pipeline.
Ans: Structural transformations refer to the transformation of data in hierarchical nature. It involves splitting data into several fields, merging fields, renaming fields, etc.
Ans: We can use a flow service to wrap a sequence of services within a single service. It manages the flow of data among the services. We can write the flow service in webMethods flow language.
Ans: We can check the memory usage by using any of the below three ways.
Ans: webMethods Developer is like an IDE used for developing code in the webMethods Integration Server. We can write graphical flows, create, and configure web services. It also provides tools to test and debug the created flows.
Ans: If the exit is not specified in a loop, it will throw a java.lang.NullPointerException.
Ans: We can give authorization to a specific user group by using ACLs (Access Control List). An element can have different ACLs assigned for each level of access. Users in the allowed list of ACLs can lock an element.
Ans: A flow service has an order of sequence steps. We can change the order of these steps by using the buttons present on the editor panel. We can use 'Shift Up' and 'Shift Down' buttons to change the steps, 'Shift Left' and 'Shift Right' buttons to move a service or branch in a sequence.
Ans: The drop pipeline variable is used for removing a variable from the list of variables. It makes the variable available for garbage collection.The delete pipeline variable is for removing a variable from the current view. If the variable is also present in the previous pipeline, it will appear when you change the view.
Ans: The sort function is available in the 'select' tab. It has a column that says 'Sort Order' where we can specify the column that we want to sort by.
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Ans: Avoid connection pool sharing across different functional areas, even if they are pointing to the same database. If the pool is being used by multiple types, then it becomes difficult to tune the size of the pool. It is also difficult to change the database settings without impacting the other.
Ans: Yes, we can use a sequence as a target of a branch. We have to set the evaluate label property of the branch step to true. Then set the label property of sequence to the value that it has to process.
Ans: The branch operation supports conditional processing. It is similar to if-then-else functionality in other programming languages. Based on the value of a variable at runtime, a branch operation gets executed conditionally.
Ans: Here are some of the common issues faced while migrating a project.
Ans: To execute a repeat operation as long as the specified condition, we have to set the count parameter to '-1'.
Ans:The default port for the HTTP listener is 5555.
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