Oracle 1Z0-030 Real Exam Questions

January 21, 2011 admin Certification Vendors, ORACLE

Oracle9i New Features for Administrators™

Exam Number: 1Z0-030

Associated Certifications: Oracle8i DBA OCPs to Oracle9i DBA

Exam Price: £ 131

Exam Registration: Register

Duration: 105 minutes

Number of Questions: 60

Passing Score: 50%

1: When querying the v$sysstat, v$sesstat or v$mystat views, you notice the statistic "workarea executions – onepass". What is the meaning of this statistic?
A.It is the cumulative count of work areas running in more than one pass.
B.It is the total amount of PGA memory dedicated to the work areas using the one pass size.
C.It is the cumulative count of work areas using the one pass size, where large sorts have spilled to disk.
D.It is the cumulative count of work areas using the one pass size, which did not have to spill to disk.
Correct Answers: C

2: Which method would you consider while implementing automatic undo management in an Oracle9i Real Application Clusters (RAC) environment?
A.creating a single undo tablespace with a nondefault block size and placing the data file on the shared raw device
B.creating a single undo tablespace with the default block size for all instances participating in RAC and placing the data file on the primary node
C.creating a single undo tablespace with the default block size for all instances participating in RAC and placing the data file on the shared raw device
D.creating multiple undo tablespaces, one for each instance participating in RAC, and placing the data file on the respective nodes
E.creating multiple undo tablespaces, one for each instance participating in RAC, and placing the data files on the shared raw device
Correct Answers: E

3: You want to create a database with automatic undo management. Which two options would you consider for the undo tablespace that would hold the undo segments? (Choose two.)
A.It must not be in logging mode.
B.It can have nonstandard block size.
C.It must be a locally managed tablespace.
D.It must be a dictionary-managed tablespace.
E.It must be created along with database creation.
Correct Answers: B C

4: Which option would you use to enable automatic SQL execution memory management?
A.Set the SGA_TARGET parameter to a nonzero value.
B.Set the %_AREA_SIZE parameter to a nonzero value.
C.Set the WORKAREA_SIZE_POLICY parameter to Auto.
D.Set the PGA_AGGREGATE_TARGET parameter to a nonzero value.
Correct Answers: D

5: Consider the following statement:
    SQL> EXECUTE DBMS_STATS.GATHER_SCHEMA_STATS (-
        2> ownname => ‘OE’, –
        3> estimate_percent => DBMS_STATS.AUTO_SAMPLE_SIZE, –
        4> method_opt => ‘for all columns size AUTO’);
What is the effect of ‘for all columns size AUTO’ of the METHOD_OPT option?
A.The Oracle server creates a new histogram based on existing histogram definitions for all table, column, and index statistics for the OE schema.
B.The Oracle server creates a histogram based on data distribution regardless of how the application uses the column/s for all table, column, and index statistics for the OE schema.
C.The Oracle server creates a histogram based on data distribution and application usage of the column/s for all table, column, and index statistics for the OE schema.
D.The Oracle server creates a histogram based on application usage, regardless of data distribution, for all table, column, and index statistics for the OE schema.
Correct Answers: C

6: Which statement describes the use of the cached execution plans feature?
A.improves the performance of SQL statements
B.provides better diagnosis of query performance
C.avoids the need to set the CURSOR_SHARING parameter
D.helps maintain cached execution plans even after the SQL statement is aged out of the Library Cache
Correct Answers: B

7: You have a tablespace, APP_TBSP, with a non-OMF file. To ease file management, you set the following parameters in the server-persistent parameter file (SPFILE) of your database instance and restart the instance:
DB_CREATE_FILE_DEST = /u01/oradata/orcl
DB_CREATE_ONLINE_LOG_DEST_1 = /u02/oradata/orcl DB_CREATE_ONLINE_LOG_DEST_2 = /u03/oradata/orcl
Then, you execute the following command to add a new data file to the tablespace:
SQL> ALTER TABLESPACE app_tbsp ADD DATAFILE;
What would be the result of this command?
A.The command fails because there are no name and size specified for the data file.
B.The command fails because a tablespace cannot have both OMF and non-OMF files.
C.The command succeeds by adding a new data file with file size equal to that of the existing file.
D.The command succeeds by adding a new data file with OMF default used for the size and the OMF naming conventions used for the file
name.
Correct Answers: D

8: The backup retention policy is configured as RECOVERY WINDOW 2. You executed the following command in RMAN against your database:
RMAN> REPORT OBSOLETE;
What would you see in the output?
A.a list of all the expired backups and copies
B.a list of all those backups and copies that have been deleted within the last two days
C.a list of all those backups and copies that have been recovered within the last two days
D.a list of backups and copies that are no longer needed to perform recovery with the range covered by the current retention policy
Correct Answers: D

9: Identify the two steps that are performed during native PL/SQL compilation for the PL/SQL blocks other than the top-level anonymous PL/SQL blocks. (Choose two.)
A.compilation of program into C code
B.compilation of program into byte code
C.compilation of program into native code
D.compilation of program into binary code
Correct Answers: A C

10: Online index rebuild functionality can be used to rebuild all the indexes in the options below except _____.
A.b-tree indexes
B.bitmap indexes
C.reverse key indexes
D.function-based indexes
Correct Answers: B

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Oracl 1Z0-030, Oracle 9i