053(二十九）

View the Exhibit for some of the current parameter settings. A user logs in to the HR schema and issues the following commands:
SQL> CREATE TABLE emp (empno NUMBER(3), ename VARCHAR2(20), sal NUMBER(8,2)); 
SQL> INSERT INTO emp(empno,ename) VALUES(1,‘JAMES‘);
At this moment, a second user also logs in to the HR schema and issues the following command:
SQL> ALTER TABLE emp MODIFY sal NUMBER(10,2);
What happens in the above scenario?
A. The second user‘s session immediately produces the resource busy error.
B. The second user‘s command executes successfully.
C. The second user‘s session waits for a time period before producing the resource busy error.
D. A deadlock is created.

142.In which situations will the ASM metadata backup help you recover the ASM disk in a disk group? (Choose all that apply.)
A. when one or more file directory paths are accidentally deleted from an ASM disk group
B. when one of the disks in a disk group is accidentaly unplugged
C. when the data file on an ASM disk group gets corrupted
D. when one or more disks in an ASM disk group are lost

143.Which two are the prerequisites to enable Flashback Data Archive? (Choose two.)
A. Database must be running in archivelog mode.
B. Automatic undo management must be enabled.
C. Undo retention guarantee must be enabled.
D. The tablespace on which the Flashback Data Archive is created must be managed with Automatic Segment Space Management (ASSM).

144.In your database, the RESULT_CACHE_MODE parameter has been set to MANUAL in the initialization parameter file. You issued the following command:
SQL>SELECT /*+ RESULT_CACHE */ sale_category, sum(sale_amt)
FROM sales
GROUP BY sale_category;
Where would the result of this query be stored?
A. database buffer cache
B. shared pool
C. PGA
D. large pool

145.You need to perform an online table redefinition of an existing SALES table to partition it into two tablespaces TBS1 and TBS2. 
The SALES table has a materialized view, materialized log, indexes, referential integrity constraint, and triggers with the PRECEDES clause existing on it. 
What action is required for dependent objects when you perform online table redefinition?
A. The dependent materialized view should have a complete refresh performed after the online table redefinition process.
B. Triggers with the PRECEDES clause should be disabled before the online table redefinition process.
C. Referential integrity constraints must be manually enabled after the online table redefinition process.
D. The materialized log should be dropped before the online table redefinition process.