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Upgrade Oracle9i/10g/11g OCA to Oracle Database 12c OCP

Question No: 1

LDAP_DIRECTORY_SYSAUTH is set to YES.

Users requiring DBAs access have been granted the sysdba enterpriserole in Oracle Internet Directory(OID).

SSL has been configure for the database and OLD and the password file has been configured for the database.

User scott with sysdba privilege tries to connect remotely using this command:

$sqlplusscott/tiger@DB0l As sysdba where DB01 is the net service name. Which authentication method will be attempted first?

  1. authentication by password file

  2. authentication by using certificates over SSL

  3. authentication by using the Oracle Internet Directory

  4. authentication by using the local OS of the database server

Answer: A

Question No: 2

In which three scenarios is media recovery required?

  1. when a tablespace is accidentally dropped from a database

  2. when archived redo log files are lost

  3. when data files are lost

  4. when one of the online redo log members is corrupted

  5. when all control files are lost

Answer: A,C,E

Reference:http://docs.oracle.com/cd/A87860_01/doc/server.817/a76993/recoscen.htm

Question No: 3

You want to export the pluggable database (PDB) hr pdb1 from the multitenant container database (CDB)CDB1 and import it into the cdb2 CDB as the emp_pdb1 PDB.

Examine the list of possible steps required to perform the task: 1.Create a PDB named emp_pdb1.

2.Export the hr_pdb1 PDB by using the full clause. 3.Open the emp_pdb1 PDB.

  1. Mount the emp_pdb1 PDB.

  2. Synchronize the emp_pdb1 PDB in restricted mode. 6.Copy the dump file to the Data Pump directory.

7.Create a Data Pump directory in the emp_pdb1 PDB. 8.Import data into emp_pdb1 with the full and remap clauses.

9.Createthe same tablespaces in emp_pdb1 as in hr_pdb1 for new local user objects. Identify the required steps in the correct order.

A. 2, 1, 3, 7, 6, and 8

B. 2, 1, 4, 5, 3, 7, 6, 9, and 8

C. 2, 1, 3, 7, 6, 9, and 8

D. 2, 1, 3, 5, 7, 6, and 8

Answer: C

Question No: 4

Which three RMAN persistent settings can be set for a database?

  1. backup retention policy

  2. default backup device type

  3. default section size for backups

  4. default destinations for backups

  5. multiple backup device types for a single backup

Answer: A,B,D Reference:http://docs.oracle.com/cd/B19306_01/backup.102/b14192/setup004.htm#i10197 39

Question No: 5

On your Oracle 12c database, you invoke SQL*Loader to load data into the employees table in the hr schema by issuing the command:

Sgt;sqlldrhr/hr@pdb table=employees

Which two statements are true about the command?

  1. It succeeds with default settings if the employees table exists in the hr schema.

  2. It fails because no SQL*Loader data file location is specified.

  3. It fails if the hr user does not have the create any directory privilege.

  4. It fails because no SQL*Loader control file location is specified.

  5. It succeeds and creates the employees table in the HR schema.

Answer: B,D

Question No: 6

Examine the RMAN command:

RMANgt; BACKUP VALIDATE DATABASE;

Which statement is true about the execution of the command?

  1. Block change tracking must be enabled before executing this command.

  2. The database must be running in archivelog mode for the successful execution of this command.

  3. A complete database backup must exist before executing this command.

  4. The command checks for blocks containing all zeros, an invalid checksum, or a corrupt

    block header.

  5. The command checks for blocks that contain a valid checksum and matching headers and footers, but that has logically inconsistentcontents.

Answer: D

Question No: 7

A complete database backup to media is taken for your database every day. Which three actions would you take to improve backup performance?

  1. Set the backup_tape_io_slaves parameter to true.

  2. Set the dbwr_io_slaves parameter to a nonzero value if synchronous I/O is in use.

  3. Configure large pool if not already done.

  4. Remove the rate parameter, if specified, in the allocate channel command.

  5. Always use RMAN compression for tape backups ratherthan the compression provided by media manager.

  6. Always use synchronous I/O for the database.

Answer: B,C,D

Reference:http://docs.oracle.com/cd/B19306_01/backup.102/b14191/rcmtunin.htm

Question No: 8

You notice performance degradation in your production Oracle 12c database. You want to know what caused this performance difference.

Which method or feature should you use?

  1. Database Replay

  2. Automatic Database Diagnostic Monitor (ADDM) Compare Period report

  3. Active Session History (ASH) report

  4. SQL Performance Analyzer

Answer: B

Reference:http://docs.oracle.com/cd/E24628_01/server.121/e17635/tdppt_degrade.htm

Question No: 9

You plan to use the In-Database Archiving feature of Oracle Database 12c, and store rows that are inactive for over three months, in Hybrid Columnar Compressed (HCC) format.

Which three storage options support the use of HCC?

  1. ASM disk groups with ASM disks consisting of Exadata Grid Disks.

  2. ASM disk groups with ASM disks consisting of LUNS on any Storage Area Network array

  3. ASM disk groups with ASM disks consisting of any zero padded NFS-mounted files

  4. Database files stored in ZFS and accessed using conventional NFS mounts.

  5. Database files stored in ZFS and accessed using the Oracle Direct NFS feature

  6. Database files stored in any file system and accessed using the Oracle Direct NFS feature

  7. ASM disk groups with ASM disks consisting of LUNs on Pillar Axiom Storage arrays

Answer: A,E,G

Explanation: HCC requires the use of Oracle Storage – Exadata (A), Pillar Axiom (G) or Sun ZFS Storage Appliance (ZFSSA).

Note:

  • Hybrid Columnar Compression, initially only available on Exadata, has been extended to support Pillar Axiom and Sun ZFS Storage Appliance (ZFSSA) storage when used with Oracle Database Enterprise Edition 11.2.0.3 and above

  • Oracle offers the ability to manage NFS using a feature called Oracle Direct NFS (dNFS). Oracle Direct NFS implements NFS V3 protocol within the Oracle database kernel itself.

Oracle Direct NFS client overcomes many of the challenges associated with using NFS with the OracleDatabase with simple configuration, better performance than traditional NFS clients, and offers consistent configuration across platforms.

Question No: 10

Which three conditions must be met before you create a Virtual Private Catalog (VPC)?

  1. A base recovery catalog should exist.

  2. The owner of VPC cannot own recovery catalog.

  3. At least one target database should beregistered in the recovery catalog.

  4. The register database privilege should be granted to the virtual catalog owner.

  5. The recovery_catalog_owner role should be granted to the virtual catalog owner.

Answer: C,D,E

Reference:http://docs.oracle.com/cd/B28359_01/backup.111/b28273/rcmsynta013.htm

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