sql server performance tuning interview questions

What is your approach in updating statistics? It is an extension to the SQL developed by Sybase. Answer: SQL Profiler provides a graphical representation of events in an instance of SQL Server for monitoring and investment purpose. Here, the developer needs to make enough changes to the database program as it can be migrated quickly. Q. Its impact gets visible while writing large data to the disk. A table can have only one clustered index. BCP does not copy the structures the same as source to destination. The value from a performance tuning perspective is that each component of the query can be understood and the percentage of resource utilization can be determined at a micro level. If it points that the no. Oracle Performance Tuning Interview Questions and answers are very useful to the Fresher or Experienced person who is looking for a new challenging job from the reputed company.
20. What is the recommended setting for MAXDOP? Ans. It is called the recursion property of the SQL server and these types of stored procedures are called nested stored procedures. 9. 18. It’s a term used in Oracle. 4. Answer: Advantages of Log Shipping includes: Q #17) Can we take the full database backup in Log shipping? When you interview for a SQL database administrator job, the interviewer will likely ask a number of questions related to optimizing SQL databases. For DBA, even a small change can affect the overall performance of the SQL server so they are not in favor of frequent changes to the database programs.

that your SQL Server is expected to support. 2. It’s a good practice to return the required column instead of all the columns of a table. Answer: Yes, by using the following syntax we can do this. The objective is to make Oracle respond faster. … I like the hidden answers approach. Deadlocks can be identified by Profiler in either textual, graphical or XML format. Answer: The trigger allows us to execute a batch of SQL code when table event occurs (INSERT, UPDATE or DELETE command executed against a specific table). 10. 1. Q:-3. Discuss how you determined the right amount of memory for the database server and how you estimated the total disk space required.
It uses one of following two methods to take this decision. What is the alternative way for NOT IN/NOT EXISTS/EXCEPT? If I apply both FORCESCAN and FORCESEEK on the same query what will happen? Answer: OLTP means Online Transaction Processing which follows rules of data normalization to ensure data integrity. 21. Here is a quick example to help you how “Insert” and “Update” can be used for multiple rows together – This will dramatically increase the SQL query performance tuning by updating, selecting rows only, not each and every row that comes into the scenario. Tableau Introduction, Installing & Configuring, Introduction of Data Visualization & Tableau Overview, Azure Virtual Networks & Identity Management.  19.8k, SSIS Interview Questions & Answers for Fresher, Experienced   Ans. While creating an index if I mention “PAD INDEX” what does it mean?

It helps a user to determine why queries are taking more time to execute and based on the investigation user can update their queries for the maximum result. Every time you run it, a single row will get created in the INDEX_STATS view. HIVE Installation & User-Defined Functions, Introduction to Machine Learning & Python. 7. You can change the stored procedure code without affecting clients. Management Studio's Built-In Performance Reports - Ability to capture point in time metrics as pre-defined by Microsoft. Primary key values can never be reused. Answer: Yes, we can take the full database backup. Q #3) List the different index configurations possible for a table?

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