Rackspace SQL Database Administrator Interview Questions and Answers

Q1. What are joins in SQL, and what are the different types?
Ans. 
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• INNER JOIN returns rows when there is at least one match in both tables.

• LEFT JOIN returns all rows from the left table and the matched rows from the right table.

• RIGHT JOIN returns all rows from the right table and the matched rows from the left tabl...read more
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Q2. What is the method to find the third highest salary in a dataset?
Ans. 
Use the SQL query with ORDER BY and LIMIT to find the third highest salary.
• Use the SQL query: SELECT DISTINCT Salary FROM Employees ORDER BY Salary DESC LIMIT 2, 1

• The above query will return the third highest salary from the 'Employees' table

• Make sure to replace 'Employees' and 'Salary' with the appropriate table and column names
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Q1. How do you manage multiple clients simultaneously?
Ans. 
I prioritize tasks, set clear expectations, utilize time management tools, and communicate effectively.
• Prioritize tasks based on urgency and importance

• Set clear expectations with clients regarding response times and availability

• Utilize time management tools such as calendars and task lists

• Communicate effectively with clients to provide updates and manage expectations
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Q2. How do you determine which issue to prioritize when faced with multiple problems?
Ans. 
I prioritize issues based on impact, urgency, and complexity.
• Assess the impact of each issue on the system or users

• Consider the urgency of resolving each issue

• Evaluate the complexity of fixing each issue

• Prioritize critical issues that have high impact, urgency, and low complexity

• Create a priority list based on these factors
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Test your algorithmic thinking and problem solving skills

Q1. Communications,clearity of answers
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Q1. Discussion about packages,joining date
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Q1. How you will find that some user SQL running slow without discussing with user?
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Q2. How you will patch specific db components to reduce downtime?
Ans. 
To patch specific db components to reduce downtime, follow these steps:
• Identify the specific components that need to be patched

• Plan the patching process during a scheduled maintenance window

• Backup the database before applying patches

• Apply patches to the specific components one by one

• Test the patched components to ensure they are functioning correctly

• Monitor the database for any issues post-patching
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Q1. Why you have so many hopping in your resume?
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Q2. How you will rate yourself as an dba?
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Scenario based Troubleshooting tasks

Q1. 1. Reason for job switch 2. Why want to join HPE
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Group discussion with Client for their feedback on candidate

Q1. What about your self introduction
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Q2. Tell obout your hobbies
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Q3. Tell obout your techincal skills
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Q4. This job which can be useful for you
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Q5. Tells about what about your skills
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Q6. You can reach a goal
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Q1. What about your self introduction
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Q2. Tell obout your hobbies
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Q3. Tell obout your techincal skills
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Q4. This job which can be useful for you
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Q5. Tells about what about your skills
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Q6. You can reach a goal
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Q1. How many nodes can we implement in rac
Ans. 
Up to 60 nodes can be implemented in RAC.
• RAC stands for Real Application Clusters

• The number of nodes depends on the version of Oracle Database being used

• Oracle Database 12c supports up to 60 nodes in RAC
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Q1. What is the difference between 11i and R12
Ans. 
11i and R12 are two different versions of Oracle E-Business Suite.
• 11i is the older version, released in 2000, while R12 was released in 2007.

• R12 has a more modern architecture and improved features, such as online patching and subledger accounting.

• Upgrading from 11i to R12 requires careful planning and testing.

• Both versions are still in use, but Oracle has announced that support for 11i will end in 2020.
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Q1. How. Many years of experience do you have
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Q1. What is ur salary expectations
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