【单选题】Companycom would like the ability to shrink filesystems. They currently have JFS filesystems. Which of the following is necessary to shrink the filesystems?()
A.
Copy the existing filesystems to JFS2
B.
Defragment the filesystem, then reduce its size
C.
Change the file system attribute allow_shrink=yes on the existing filesystems
D.
Modify the logical volume attribute allow_shrink=yes on the existing logical volumes
【单选题】You executed the following SQL statement to shrink the EMPLOYEES table segment stored in the EXAMPLE tablespace: ALTER TABLE employees SHRINK SPACE CASCADE; Which statement is correct in this scenario...
A.
The data in the segment will be compacted but the high water mark will not be adjusted
B.
The EMPLOYEES table will be changed to read-only mode during the shrink operation
C.
The indexes created on the EMPLOYEES table will need to be rebuilt after the shrink operation is over
D.
The shrink behavior will be cascaded to all dependent segments of the table that support a shrink operation
E.
Data manipulation language (DML) operations will not be possible on the EMPLOYEES table during the COMPACTION phase of the shrink operation