Oracle
1Z0-888 · Question #39
1Z0-888 Question #39: Real Exam Question with Answer & Explanation
Sign in or unlock 1Z0-888 to reveal the answer and full explanation for question #39. The question stem and answer options stay visible for context.
Performance Tuning
Question
Consider the join_buffer_size parameter in MySQL Server. Which two statements are true about the join buffer?
Options
- AThe value should be increased if the client performs several SELECT operations.
- BThe join buffer is set per connection.
- CThe join buffer is used to process sorts when complex joins are being performed.
- DThe value should be increased from the default if the query joins large rows without using an index.
- EThe join buffer is global and can be changed only by restarting the server.
Unlock 1Z0-888 to see the answer
You've previewed enough free 1Z0-888 questions. Unlock 1Z0-888 for full answers, explanations, the timed quiz mode, progress tracking, and the master PDF. Question stem and options stay visible so you can still see what's on the exam.
Topics
#join_buffer_size#query optimization#join algorithms#memory allocation