Oracle
1Z0-062 · Question #69
A senior DBA asked you to execute the following command to improve performance: SQL> ALTER TABLE subscribe log STORAGE (BUFFER_POOL recycle); You checked the data in the SUBSCRIBE_LOG table and…
The correct answer is D. The data blocks in the SUBSCRIBE_LOG table are rarely accessed. The most of the rows in SUBSCRIBE_LOG table are accessed once a week.
Managing Performance
Question
A senior DBA asked you to execute the following command to improve performance:
SQL> ALTER TABLE subscribe log STORAGE (BUFFER_POOL recycle); You checked the data in the SUBSCRIBE_LOG table and found that it is a large table containing one million rows. What could be a reason for this recommendation?
Options
- AThe keep pool is not configured.
- BAutomatic Workarea Management is not configured.
- CAutomatic Shared Memory Management is not enabled.
- DThe data blocks in the SUBSCRIBE_LOG table are rarely accessed.
- EAll the queries on the SUBSCRIBE_LOG table are rewritten to a materialized view.
How the community answered
(43 responses)- A2% (1)
- B9% (4)
- C2% (1)
- D81% (35)
- E5% (2)
Explanation
The most of the rows in SUBSCRIBE_LOG table are accessed once a week.
Topics
#buffer cache#BUFFER_POOL recycle#performance tuning#memory management
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