LTIMindtree Interview Questions, Process, and Tips

Q1. How to perform patch in Oracle RAC database
Ans. 
Performing patch in Oracle RAC database involves applying the patch to all nodes in the cluster.
• Ensure all nodes are up and running before starting the patching process

• Use OPatch utility to apply the patch to each node individually

• Verify the patch status on each node to ensure successful application
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Q2. How to upgrade from 12c to 19c database .
Ans. 
Upgrade from Oracle 12c to 19c database involves careful planning and execution.
• Ensure compatibility of applications with 19c

• Backup the 12c database before starting the upgrade process

• Follow Oracle's documentation and guidelines for upgrading

• Test the upgrade process in a non-production environment first

• Consider using Oracle Data Pump for exporting and importing data
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Q1. AWS services used in previous project. S3, SNS, SQS, AWS Lambda, AWS IAM, AWS Kineses AWS Glue, AWS Redshift, AWS Athena etc. He gave redshift scenario and asked me to explain the flow from start to end. G...read more
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Q2. Devops related question such as: CI CD: Jenkins Process followed in devops
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Q3. What is autoscaling how it works? Give scenario that you have worked on for autoscaling.
Ans. 
Autoscaling is a feature in cloud computing that automatically adjusts the number of compute resources based on workload.
• Autoscaling helps in optimizing resource utilization and maintaining performance during peak loads.

• It works by monitoring metrics such as CPU utilization or network traffic, and then adding or removing instances as needed.

• An example scenario could be setting up autoscaling for a web application that ...read more
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Q4. Python, Pyspark. What is spark and why it is used something like that of question you can expect.
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Q1. What is pointer to pointer
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Q1. Tell about yourself?
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Q2. Willing to shift your location?
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Q1. What Functions does SAP Analytics cloud server?
Ans. 
SAP Analytics Cloud server functions include data visualization, planning, predictive analytics, and business intelligence.
• Data visualization: Create interactive dashboards and reports to visualize data insights.

• Planning: Collaborate on budgets, forecasts, and plans with integrated planning tools.

• Predictive analytics: Use machine learning algorithms to forecast trends and outcomes.

• Business intelligence: Gain insights i...read more
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Q2. What kind of Modules are available in SAC
Ans. 
SAP Analytics Cloud (SAC) offers various modules for data visualization, planning, predictive analytics, and business intelligence.
• Data Visualization: Create interactive dashboards and reports to visualize data in a meaningful way.

• Planning: Utilize forecasting and budgeting tools to plan and analyze business performance.

• Predictive Analytics: Use machine learning algorithms to predict future trends and outcomes.

• Business...read more
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Q1. How to perform Set Actions, LOD's
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Q1. How to return Object from Thread
Ans. 
Use Callable interface to return Object from Thread
• Implement Callable interface instead of Runnable

• Use ExecutorService to submit Callable and get Future object

• Call get() method on Future object to retrieve the returned Object
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Q2. How to implement cache using core java
Ans. 
Implementing cache in core Java involves using data structures like HashMap or LinkedHashMap.
• Use HashMap or LinkedHashMap to store key-value pairs in memory

• Implement a mechanism to check if the data is already in cache before fetching from the main source

• Set a maximum size for the cache and implement a strategy to evict least recently used items if the cache is full
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Q3. Explain spring profile and how to configure it.
Ans. 
Spring profiles allow for different configurations based on environment or application needs.
• Spring profiles are used to define different configurations for different environments or application needs.

• Profiles can be activated using the 'spring.profiles.active' property in application.properties or application.yml.

• Profiles can be defined using annotations like @Profile or by creating separate configuration files for ea...read more
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