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2. Which two statements are true about the Automatic Workload Repository (AWR)? (Choose two.)
A.All AWR tables belong to the SYSTEM schema.
B.The AWR contains systemwide tracing and logging information.
C.The snapshots collected by the AWR are accessible through data dictionary views.
D.The snapshots collected by the AWR are used by self-tuning components in the database.
Answer: CD
3. While observing the index statistics, you find that an index is highly fragmented, thereby resulting in poor database performance. Which option would you use to reduce fragmentation without affecting the users who are currently using the index?
A.Validate the index structure using the ANALYZE…INDEX command.
B.Rebuild the index using the ALTER INDEX..REBUILD ONLINE command.
C.Change the block space utilization parameters using the ALTER INDEX command.
D.Deallocate the unused space in the index using the ALTER INDEX..DEALLOCATE UNUSED command.
Answer: B
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149. You executed the following command to create a tablespace called SALES_DATA:
SQL> CREATE TABLESPACE sales_data DATAFILE SIZE 100M
SEGMENT SPACE MANAGEMENT AUTO;
Which two statements are true about the SALES_DATA tablespace? (Choose two.)
A.The database automatically determines the extent-sizing policy for the tablespace.
B.The segments are automatically shrunk when the contents are removed from them.
C.The allocation of extents within the tablespace is managed through the dictionary tables.
D.The space utilization description of the data blocks in segments is recorded in bitmap blocks.
E.The space utilization description of the data blocks in segments is managed through free lists.
Answer: AD
150. The user HR receives the following error while inserting data into the TTK table:
ERROR at line 1:
ORA-01653: unable to extend table HR.TTK by 128 in tablespace SMD
Upon investigation, you find that SMD is a small file tablespace. Which three action would allow the user to insert data? (Choose three.)
A.Add a data file to the SMD tablespace.
B.Add a data file to the temporary tablespace associated with the user HR.
C.Resize the data file associated with the SMD tablespace to make it larger.
D.Alter the data file associated with the SMD tablespace to grow automatically.
E.Change the segment space management for the SMD tablespace to automatic.
n segments is managed through free lists.
Answer: ACD
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146. Identify three situations in which you would NOT be able to drop a tablespace. (Choose three.)
A.when the tablespace is online
B.when the tablespace has segments with data in it
C.when the tablespace is a default permanent tablespace for the database
D.when the tablespace contains a table that is currently being used by transactions
E.when the tablespace contains undo data that is needed to rollback an uncommitted transaction
Answer: CDE
149. You executed the following command to create a tablespace called SALES_DATA:
SQL> CREATE TABLESPACE sales_data DATAFILE SIZE 100M
SEGMENT SPACE MANAGEMENT AUTO;
Which two statements are true about the SALES_DATA tablespace? (Choose two.)
A.The database automatically determines the extent-sizing policy for the tablespace.
B.The segments are automatically shrunk when the contents are removed from them.
C.The allocation of extents within the tablespace is managed through the dictionary tables.
D.The space utilization description of the data blocks in segments is recorded in bitmap blocks.
E.The space utilization description of the data blocks in segments is managed through free lists.
Answer: AD
Killtest Practice Exams for 1Z0-052 are written to the highest standards of technical accuracy, using only certified subject matter experts and published authors for development.144. You execute the following command to change the status of the SALES tablespace:
SQL> ALTER TABLESPACE sales OFFLINE;
Which statements describe the effect of the command? (Choose all that apply.)
A.The tablespace would require recovery to go back online.
B.A checkpoint is taken on all data files that are associated with the SALES tablespace.
C.The sessions that subsequently try to access the objects in the SALES tablespace receive an error.
D.The new status of the SALES tablespace is recorded in the control file when the database instance is closed.
Answer: BC
145. Examine the commands executed in a DBA session:
SQL> CREATE BIGFILE TABLESPACE MRKT
2 DATAFILE ‘/u01/app/oracle/oradata/orcl/mrkt.dbf’ size 10M LOGGING
3 EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO;
Tablespace created.
SQL> ALTER DATABASE DEFAULT TABLESPACE MRKT;
Database altered.
Which two statements are true regarding the MRKT tablespace? (Choose two.)
A.No more data files can be added to the tablespace.
B.Segment space is managed by free lists in the tablespace.
C.A user created without being assigned a default tablespace uses this tablespace.
D.The tablespace can be dropped with the current setting with segments present in it.
Answer: AC
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142. The user SCOTT owns the CUST table that is placed in the SALES tablespace. The user SCOTT opens a session and executes commands as follows:
SQL> INSERT INTO cust VALUES(101, ‘JACK’);
1 row created.
SQL> INSERT INTO cust VALUES(102, ‘SMITH’);
1 row created.
As a DBA, you execute the following command from another session:
ALTER TABLESPACE sales READ ONLY;
Which statement is true regarding the effect of this command on the transaction in Scott’s session?
A.The command fails as a transaction is still pending.
B.The transaction in Scott’s session is rolled back and the tablespace becomes read-only.
C.The command waits and the user SCOTT can execute data manipulation language (DML) statements only as part of the current transaction.
D.The command hangs until all transactions on the objects in the tablespace commit or rollback, and then the tablespace is placed in read-only mode.
Answer: D
143. You execute a command to resize a data file, sales.dbf, of size 200 MB in your database:
ALTER DATABASE DATAFILE ‘/remorse/sales.dbf’ RESIZE 150M;
Which statement is true about this command?
A.The command must be issued in MOUNT state.
B.The command succeeds only if the data file is offline.
C.The command must be issued when the database is in the archivelog mode.
D.The command succeeds if no extent in the tablespace is currently allocated above the 150 MB boundary of the file.
Answer: D
