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orcacie9i database:performance tuning : 1z0-033 Exam

Exam Number/Code: 1Z0-033
Exam Name: orcacie9i database:performance tuning

“orcacie9i database:performance tuning”, also known as 1z0-033 exam, is a Oracle certification.
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1. You create a stored outline and apply it for use. What strategy would you adopt to verify that the stored outline
is being used for a statement?
A.verify OL$,OL$HINTS, and OL$NODES tables after running the statement with USE_STORED_OUTLINES
set
B.examine the V$SQL dynamic performance view after running the statement with the
USE_STORED_OUTLINES set
C.compare the explain plan output for the statement when running with and without the
USE_STORED_OUTLINES set
D.compare the statspack output by taking snaps before and after running the statement with the
USE_STORED_OUTLINES set

Answer:: C
3. Why does performance degrade when many UPDATE, INSERT, or DELETE statements are issued on a table
that has an associated Bitmap index?
A.Some DML operations re-create the Bitmap index blocks.
B.The Bitmap index is rebuilt automatically after a DML operation.
C.The smallest amount of a bitmap that can be locked is a bitmap segment.
D.Additional time is taken to remove NULL values from the Bitmap index after a DML operation.

Answer:: C

4. In an online transaction processing (OLTP) system, you notice that the transactions are waiting. Which two
techniques would you use to determine if it is a locking problem? (Choose two.)
A.query V$SESSION to determine the sessions waiting for locks
B.query V$LOCKED_OBJECT to diagnose the deadlocked sessions
C.execute the utllockt.sql script to find the list of locking and waiting transactions
D.use the catblock.sql script to populate DBA_BLOCKERS and DBA_WAITERS views
E.query the DBA_WAITERS view to determine the sessions that are waiting for a locked resource

Answer:: CE

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5. A customer has various dictionary-managed tablespaces with past data. The extents in dictionary-managed
tablespaces are not uniformly sized. Newly created tablespaces are locally managed. You want to make all the
tablespaces locally managed. What approach would you use to change the dictionary-managed tablespaces to
locally managed tablespaces to get all the performance benefits of local extent management?
A.use only the DBMS_SPACE_ADMIN.TABLESPACE_MIGRATE_TO_LOCAL procedure
B.create new locally managed tablespaces and move data from existing dictionary-managed tablespaces to locally
managed tablespaces
C.use the DBMS_SPACE_ADMIN.TABLESPACE_MIGRATE_TO_LOCAL procedure, followed by
DBMS_SPACE_ADMIN.TABLESPACE_FIX_SEGMENT_STATES
D.use the ALTER TABLESPACE command to change extent management to local, and then use the
DBMS_SPACE_ADMIN.TABLESPACE_MIGRATE_TO_LOCAL procedure

Answer:: B

6. You have reserved memory within the Shared Pool by using the SHARED_POOL_RESERVED_SIZE
parameter to accommodate large space allocations while compiling PL/SQL blocks and database triggers.
While observing the performance of the reserved area, you find that the value of the REQUEST_FAILURES
column in the V$SHARED_POOL_RESERVED view is continuously increasing.
Which statement is true in this scenario?
A.The parsing of the statement fails due to invalidations.
B.The execution of the statement fails due to invalidations.
C.The space allocated for the reserved area is not enough.
D.The syntax in the PL/SQL blocks is causing the compilation failure.

Answer:: C

7. You need to size the KEEP pool. Which calculation would you use to determine the initial size of the KEEP
pool?
A.50% of the DEFAULT pool
B.50% of the RECYCLE pool
C.the total number of blocks of all the candidate objects that you need in the KEEP pool / the number of objects
that you need in the KEEP pool
D.total number of blocks of all the candidate objects that you need in the KEEP pool + additional space to allow
for object growth

Answer:: D

8. ABC Corp. plans to build an online transaction processing (OLTP) system. The company plans to tune all the
components during the development life cycle.
From the list given below, identify the order in which the components should be tuned.
1. logical and physical model
2. cursor sharing
3. Oracle instance memory structures
4. operating system
5 data file I/O
A.1, 2, 3, 5, 4
B.1, 3, 2, 4, 5
C.1, 2, 3, 4, 5
D.1, 2, 5, 3, 4

Answer:: A
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