NTT Data Middleware Administrator Interview Questions and Answers

Updating plugin.cfg, stopping node agent for sync, resolving 504 and 403 errors, deploying EAR files, and configuring data sources are important scenarios for a Middleware Administrator.

• plugin.cfg needs to be updated when adding or removing a plugin

• Stopping node agent is necessary for synchronizing plugin changes

• 504 error can be resolved by increasing timeout value or optimizing code

• 403 error can be resolved by checkin...read more

To diagnose frequent JVM crashes, follow these steps

• Check JVM logs for any error or exception messages

• Analyze system logs for any hardware or operating system issues

• Review any recent changes or updates to the JVM or application

• Monitor system resources like CPU, memory, and disk usage

• Use JVM diagnostic tools like Java Flight Recorder or VisualVM

• Consider analyzing heap dumps or thread dumps for memory or concurrency issu

The config.xml file is a configuration file used in middleware systems to define settings and parameters.

• It is commonly used in middleware systems like Apache Tomcat and IBM WebSphere.

• The file contains XML tags that define various configuration options such as server settings, database connections, and security settings.

• It is typically located in the installation directory of the middleware system.

• Modifying the config....read more

The boot.properties file is a configuration file used by middleware applications to store username and password credentials.

• The boot.properties file is typically found in the domain directory of a middleware application.

• It is used to store the username and password credentials required for the application to start up.

• The file is encrypted to protect the sensitive information stored within it.

• It allows for automatic aut...read more