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

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• 1You 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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• 2To 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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• 3You support Oracle Database 12c Oracle Database 11g, and Oracle Database log on the same server.All databases of all versions use Automatic Storage Management (ASM).Which three statements are true about the ASM disk group compatibility attributes that are set for a disk group、

  A.The ASM compatibility attribute controls the format of the disk group metadata.

  B.RDBMS compatibility together with the database version determines whether a database Instance can mount the ASM disk group.

  C.The RDBMS compatibility setting allows only databases set to the same version as thecompatibility value, to mount the ASM disk group.

  D.The ASM compatibility attribute determines some of the ASM features that may be used by the Oracle disk group.

  E.The ADVM compatibility attribute determines the ACFS features that may be used by the Oracle 10 g database.

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• 4You execute the following commands to audit database activities:SQL > ALTER SYSTEM SET AUDIT_TRIAL=DB, EXTENDED SCOPE=SPFILE;SQL > AUDIT SELECT TABLE, INSERT TABLE, DELETE TABLE BY JOHN By SESSION WHENEVER SUCCESSFUL;Which statement is true about the audit record that generated when auditing after instance restarts、

  A.One audit record is created for every successful execution of a SELECT, INSERT OR DELETE command on a table, and contains the SQL text for the SQL Statements.

  B.One audit record is created for every successful execution of a SELECT, INSERT OR DELETE command, and contains the execution plan for the SQL statements.

  C.One audit record is created for the whole session if john successfully executes aSELECT, INSERT, or DELETE command, and contains the execution plan for the SQL statements.

  D.One audit record is created for the whole session if JOHN successfully executes a select command, and contains the SQL text and bind variables used.

  E.One audit record is created for the whole session if john successfully executes aSELECT, INSERT, or DELETE command on a table, and contains the execution plan, SQL text, and bind variables used.

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• 5Which three statements are true about using flashback database in a multitenant container database (CDB)、

  A.The root container can be flashed back without flashing back the pluggable databases (PDBs).

  B.To enable flashback database, the CDB must be mounted.

  C.Individual PDBs can be flashed back without flashing back the entire CDB.

  D.C.Individual PDBs can be flashed back without flashing back the entire CDB.D.The DB_FLASHBACK RETENTION_TARGET parameter must be set to enable flashback of the CDB.

  E.A CDB can be flashed back specifying the desired target point in time or an SCN, but not a restore point.

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• 6You 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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• 7You 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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• 8A 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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• 9Which 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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• 10Which 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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