You use the segment advisor to help determine objects for which space may be reclaimed.
Which three statements are true about the advisor given by the segment advisor?
A.
It may advise the use of online table redefinition for tables in dictionary managed tablespace.
B.
It may advise the use of segment shrink for tables in dictionary managed tablespaces it the no
chained rows.
C.
It may advise the use of online table redefinition for tables in locally managed tablespaces
D.
It will detect and advise about chained rows.
E.
It may advise the use of segment shrink for free list managed tables.
Explanation:
The Segment Advisor generates the following types of advice:
* If the Segment Advisor determines that an object has a significant amount of free space, it
recommends online segment shrink. If the object is a table that is not eligible for shrinking, as in
the case of a table in a tablespace without automatic segment space management, the Segment
Advisor recommends online table redefinition (C).
* (D) If the Segment Advisor encounters a table with row chaining above a certain threshold, it
records that fact that the table has an excess of chained rows.
Correct answer: A,D,E
A is correct not B because shrink needs ASSM enabled which is not the case with dictionary managed tbs.
E is correct not C because localy managed (or free list managed) tablespaces allow shrink which is the better choice.
Not B (dictionary managed tablespaces) and Not E (free list managed tables) – The Segment Shrink option is available only to the segments belonging to local extent management tablespaces with automatic segment space management.
C is possible – locally managed tablespaces can use either manual or automatic segment space management, in the case of manual segment space management, Segment Advisor will not be able to advise Segment Shrink option and therefore Online Table Redefinition advise is possible.
So I think the correct answer i A,C,D
A C D
I am agree with conclusion the Mike Yeap. see doc oracle/concept/logical storage structure tablespace.
ACD
Regarding D: It says “detect and advise” but from the link:
https://docs.oracle.com/database/121/ADMIN/schema.htm#ADMIN10120
“For row chaining advice, the Automatic Segment Advisor generates findings only, and not recommendations”.
Which means it only detects, not advice.