Which of the following is a common method for tuning SQL queries in Oracle?
Indexing, query refactoring, and optimizing joins are methods for tuning SQL queries to improve performance.
What is the main purpose of Oracle's Automatic Workload Repository (AWR)?
AWR collects and stores performance statistics that help with diagnosing and tuning database performance issues.
How can Oracle SQL Developer help with performance tuning?
SQL Developer provides tools for identifying slow queries and optimizing SQL performance through various diagnostic features.
What is the Oracle instance parameter 'OPTIMIZER_MODE'?
'OPTIMIZER_MODE' controls how Oracle's optimizer chooses the execution plan for SQL queries.
What is an Oracle database index used for?
An index in an Oracle database speeds up query retrieval times by creating a data structure that allows quick lookups of rows in a table.
Which of the following is a way to improve Oracle database performance by reducing disk I/O?
Using larger buffer caches and efficient indexing reduces the need for disk I/O, which can improve performance.
Loading Questions...
What is the effect of using parallel queries in Oracle?
Parallel queries allow Oracle to break a query into multiple smaller tasks, improving query performance by leveraging multiple CPU cores.
What does the Oracle parameter 'SORT_AREA_SIZE' control?
'SORT_AREA_SIZE' controls the amount of memory Oracle uses for sorting operations before resorting to disk.
What does 'EXPLAIN PLAN' in Oracle do?
'EXPLAIN PLAN' displays the execution plan of a query, allowing you to analyze and optimize its performance.