Oracle Apps DBA Consultant Interview Questions and Answers

One database challenge I faced was performance tuning due to inefficient SQL queries.

• Identifying slow queries using tools like AWR reports and SQL tuning advisor

• Optimizing SQL queries by adding indexes, rewriting queries, or using hints

• Monitoring database performance metrics like CPU usage, memory usage, and I/O latency

Row chaining in clusterware refers to the situation where a row in a table is too large to fit in a single data block.

• Row chaining occurs when a row's data is split across multiple blocks because it is too large to fit in one block.

• This can lead to performance issues as multiple I/O operations are required to retrieve the complete row.

• To avoid row chaining, it is important to properly design the table structure and consider using LOB (Large Object) data types for large column...read more