Oracle认证Oracle认证Oracle认证ORACLE选择题

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• 71To enable the Database Smart Flash Cache, you configure the following parameters:DB_FLASH_CACHE_FILE = ‘/dev/flash_device_1’ , ‘/dev/flash_device_2’DB_FLASH_CACHE_SIZE=64GWhat is the result when you start up the database instance、

  A.It results in an error because these parameter settings are invalid.

  B.One 64G flash cache file will be used.

  C.Two 64G flash cache files will be use

  D.D.Two 32G flash cache files will be used.

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• 72You executed this command to create a password file:$ orapwd file = orapworcl entries = 10 ignorecase = NWhich two statements are true about the password file、

  A.It will permit the use of uppercase passwords for database users who have been granted the SYSOPER role.

  B.It contains username and passwords of database users who are members of the OSOPER operating system group.

  C.It contains usernames and passwords of database users who are members of the OSDBA operating system group.

  D.It will permit the use of lowercase passwords for database users who have granted the SYSDBA rol

  E.E.It will not permit the use of mixed case passwords for the database users who have

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• 73Identify three valid methods of opening, pluggable databases (PDBs).

  A.ALTER PLUGGABLE DATABASE OPEN ALL ISSUED from the root

  B.ALTER PLUGGABLE DATABASE OPEN ALL ISSUED from a PDB

  C.ALTER PLUGGABLE DATABASE PDB OPEN issued from the seed

  D.ALTER DATABASE PDB OPEN issued from the root

  E.ALTER DATABASE OPEN issued from that PDB

  G.ALTER PLUGGABLE DATABASE PDB OPEN issued from another PDB

  H.A.ALTER PLUGGABLE DATABASE OPEN ALL ISSUED from the rootB.ALTER PLUGGABLE DATABASE OPEN ALL ISSUED from a PDBC.ALTER PLUGGABLE DATABASE PDB OPEN issued from the seedD.ALTER DATABASE PDB OPEN issued from the rootE.ALTER DATABASE OPEN issued from that PDBF.ALTER PLUGGABLE DATABASE PDB OPEN issued from another PDBG.ALTER PLUGGABLE DATABASE OPEN issued from that PDB

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• 74You administer an online transaction processing (OLTP) system whose database is stored in Automatic Storage Management (ASM) and whose disk group use normal redundancy.One of the ASM disks goes offline, and is then dropped because it was not brought online before DISK_REPAIR_TIME elapsed.When the disk is replaced and added back to the disk group, the ensuing rebalance operation is too slow.Which two recommendations should you make to speed up the rebalance operation if this type of failure happens again、

  A.Increase the value of the ASM_POWER_LIMIT parameter.

  B.Set the DISK_REPAIR_TIME disk attribute to a lower value.

  C.Specify the statement that adds the disk back to the disk group.

  D.Increase the number of ASMB processes.

  E.Increase the number of DBWR_IO_SLAVES in the ASM instance.

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• 75You are administering a database and you receive a requirement to apply the following restrictions:1. A connection must be terminated after four unsuccessful login attempts by user.2. A user should not be able to create more than four simultaneous sessions.3. User session must be terminated after 15 minutes of inactivity.4. Users must be prompted to change their passwords every 15 days.How would you accomplish these requirements、

  A.by granting a secure application role to the users

  B.by creating and assigning a profile to the users and setting theREMOTE_OS_AUTHENT parameter to FALSE

  C.By creating and assigning a profile to the users and setting theSEC_MAX_FAILED_LOGIN_ATTEMPTS parameter to 4

  D.By Implementing Fine-Grained Auditing (FGA) and setting theREMOTE_LOGIN_PASSWORD_FILE parameter to NON

  E.E.By implementing the database resource Manager plan and setting theSEC_MAX_FAILED_LOGIN_ATTEMPTS parameters to 4.

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• 76A senior DBA asked you to execute the following command to improve performance:SQL> ALTER TABLE subscribe log STORAGE (BUFFER_POOL recycle);You checked the data in the SUBSCRIBE_LOG table and found that it is a large table containing one million rows.What could be a reason for this recommendation、

  A.The keep pool is not configured.

  B.Automatic Workarea Management is not configured.

  C.Automatic Shared Memory Management is not enable

  D.B.Automatic Workarea Management is not configured.C.Automatic Shared Memory Management is not enabled.D.The data blocks in the SUBSCRIBE_LOG table are rarely accessed.

  E.All the queries on the SUBSCRIBE_LOG table are rewritten to a materialized view.

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• 77Which three tasks can be automatically performed by the Automatic Data Optimization feature of Information lifecycle Management (ILM)、

  A.Tracking the most recent read time for a table segment in a user tablespace

  B.Tracking the most recent write time for a table segment in a user tablespace

  C.Tracking insert time by row for table rows

  D.Tracking the most recent write time for a table block

  E.Tracking the most recent read time for a table segment in the SYSAUX tablespace

  F.Tracking the most recent write time for a table segment in the SYSAUX tablespace

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• 78Which two partitioned table maintenance operations support asynchronous Global Index Maintenance in Oracle database 12c、

  A.ALTER TABLE SPLIT PARTITION

  B.ALTER TABLE MERGE PARTITION

  C.ALTER TABLE TRUNCATE PARTITION

  D.ALTER TABLE ADD PARTITION

  E.ALTER TABLE DROP PARTITION

  F.ALTER TABLE MOVE PARTITION

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• 79You 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

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• 80Which two statements are true about Oracle Managed Files (OMF)、

  A.OMF cannot be used in a database that already has data files created with user- specified directions.

  B.The filesystem directions that are specified by OMF parameters are created automatically.

  C.OMF can be used with ASM disk groups, as well as with raw devices, for better file management.

  D.OMF automatically creates unique file names for table spaces and control files.

  E.OMF may affect the location of the redo log files and archived log files

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