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    Updated Oracle Database 12c: Installation and Administration Braindumps Study Material


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    Sample Questions:

    QUESTION 1:


    Which statement is true regarding the startup of a database instance?

    A. The instance does not start up normally and requires manual media recovery after a shutdown
    using the abort option.
    B. Uncommitted transactions are rolled back during the startup of the database instance after a
    shutdown using the immediate option.
    C. There is no difference in the underlying mechanics of the startup whether the database is shut
    down by using the immediate option or the abort option.
    D. Media recovery is required when the database is shut down by using either the immediate
    option or the abort option.
    E. Instance recovery is not required if the database instance was shut down by using
    SHUTDOWN IMMEDIATE.

    Answer: B

    Reference:


    http://docs.oracle.com/cd/A87860_01/doc/server.817/a76956/start.htm

    QUESTION 2:

    You configure your database Instance to support shared server connections.
    Which two memory areas that are part of PGA are stored in SGA instead, for shared server
    connection?

    A. User session data
    B. Stack space
    C. Private SQL area
    D. Location of the runtime area for DML and DDL Statements
    E. Location of a part of the runtime area for SELECT statements

    Answer: A,C

    Explanation:


    A: PGA itself is subdivided. The UGA (User Global Area) contains session state
    information, including stuff like package-level variables, cursor state, etc. Note that, with shared
    server, the UGA is in the SGA. It has to be, because shared server means that the session state
    needs to be accessible to all server processes, as any one of them could be assigned a particular
    session. However, with dedicated server (which likely what youre using), the UGA is allocated in
    the PGA.
    C: The Location of a private SQL area depends on the type of connection established for a
    session. If a session is connected through a dedicated server, private SQL areas are located in
    Oracle 1z0-062 Exam
    the server process PGA. However, if a session is connected through a shared server, part of the
    private SQL area is kept in the SGA.
    Note:
     System global area (SGA)
    The SGA is a group of shared memory structures, known as SGA components, that contain data
    and control information for one Oracle Database instance. The SGA is shared by all server and
    background processes. Examples of data stored in the SGA include cached data blocks and
    shared SQL areas.
     Program global area (PGA)
    A PGA is a memory region that contains data and control information for a server process. It is
    nonshared memory created by Oracle Database when a server process is started. Access to the
    PGA is exclusive to the server process. There is one PGA for each server process. Background
    processes also allocate their own PGAs. The total memory used by all individual PGAs is known
    as the total instance PGA memory, and the collection of individual PGAs is referred to as the total
    instance PGA, or just instance PGA. You use database initialization parameters to set the size of
    the instance PGA, not individual PGAs.
    Reference: Oracle Database Concepts 12c

    QUESTION 3:

    Your multitenant container database has three pluggable databases (PDBs): PDB1, PDB2, and
    PDB3.
    Which two RMAN commands may be; used to back up only the PDB1 pluggable database?

    A. BACKUP PLUGGABLE DATABASE PDB1 while connected to the root container
    B. BACKUP PLUGGABLE DATABASE PDB1 while connected to the PDB1 container
    C. BACKUP DATABASE while connected to the PDB1 container
    D. BACKUP DATABASE while connected to the boot container
    E. BACKUP PLUGGABLE database PDB1 while connected to PDB2

    Answer: A,C

    Explanation:

    To perform operations on a single PDB, you can connect as target either to the root
    or directly to the PDB.
     (A) If you connect to the root, you must use the PLUGGABLE DATABASE syntax in your RMAN
    commands. For example, to back up a PDB, you use the BACKUP PLUGGABLE DATABASE
    command.
     (C)If instead you connect directly to a PDB, you can use the same commands that you would
    use when connecting to a non-CDB. For example, to back up a PDB, you would use the BACKUP
    DATABASE command.

    Reference:

    Oracle Database Backup and Recovery Users Guide 12c, About Backup and
    Recovery of CDBs

    QUESTION 4:


    Identify three scenarios in which you would recommend the use of SQL Performance Analyzer to
    analyze impact on the performance of SQL statements.

    A. Change in the Oracle Database version
    B. Change in your network infrastructure
    C. Change in the hardware configuration of the database server
    D. Migration of database storage from non-ASM to ASM storage
    E. Database and operating system upgrade

    Answer: A,C,E

    Explanation:


    Oracle 11g/12c makes further use of SQL tuning sets with the SQL Performance
    Analyzer, which compares the performance of the statements in a tuning set before and after a
    database change. The database change can be as major or minor as you like, such as:
     (E) Database, operating system, or hardware upgrades.
     (A,C) Database, operating system, or hardware configuration changes.
     Database initialization parameter changes.
     Schema changes, such as adding indexes or materialized views.
     Refreshing optimizer statistics.
     Creating or changing SQL profiles.

    QUESTION 5:

    You performed an incremental level 0 backup of a database:
    RMAN > BACKUP INCREMENTAL LEVEL 0 DATABASE;
    Oracle 1z0-062 Exam
    To enable block change tracking after the incremental level 0 backup, you issued this command:
    SQL > ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE
     /mydir/rman_change_track.f;
    To perform an incremental level 1 cumulative backup, you issued this command:
    RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE;
    Which three statements are true?

    A. Backup change tracking will sometimes reduce I/O performed during cumulative incremental
    backups.
    B. The change tracking file must always be backed up when you perform a full database backup.
    C. Block change tracking will always reduce I/O performed during cumulative incremental
    backups.
    D. More than one database block may be read by an incremental backup for a change made to a
    single block.
    E. The incremental level 1 backup that immediately follows the enabling of block change tracking
    will not read the change tracking file to discover changed blocks.

    Answer: A,D,E





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