Data Conversion Associate Interview Questions and Answers for Freshers

To investigate bottlenecks in Database loading, follow these steps:

• Check the database schema and optimize it if necessary

• Analyze the query execution plan and optimize it

• Check the hardware resources and upgrade if needed

• Monitor the disk I/O and network traffic

• Use profiling tools to identify slow queries or code

• Consider using caching mechanisms

• Partition large tables to improve performance

Explain plan is a tool in Oracle that shows the execution plan of a SQL statement.

• Explain plan is used to analyze and optimize SQL queries.

• It shows the order in which tables are accessed, the join methods used, and the access methods used.

• The output of explain plan can be viewed in text or graphical format.

• It helps in identifying performance bottlenecks and optimizing the query execution time.

• Explain plan can be generated using the EXPLAIN PLAN statement or the DBMS_XPLAN pac...read more