You want to flash back a test database by five hours.You issue this command:SQL > FLASHBACK DATABASE TO TIMESTAMP (SYSDATE - 5/24);Which two statements are true about this flashback scenario、

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• 1Which three statements are true about SQL plan directives、

  A.They are tied to a specific statement or SQL ID.

  B.They instruct the maintenance job to collect missing statistics or perform dynamic sampling to generate a more optimal plan.

  C.They are used to gather only missing statistics.

  D.B.They instruct the maintenance job to collect missing statistics or perform dynamic sampling to generate a more optimal plan.C.They are used to gather only missing statistics.D.They are created for a query expression where statistics are missing or the cardinality estimates by the optimizer are incorrect.

  E.They instruct the optimizer to create only column group statistics.

  F.Improve plan accuracy by persisting both compilation and execution statistics in the SYSAUX tablespace.

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• 2Your multitenant container database (CDB) contains pluggable databases (PDBs), you are connected to the HR_PDB. You execute the following command:SQL > CREATE UNDO TABLESPACE undotb01DATAFILE ‘u01/oracle/rddb1/undotbs01.dbf’ SIZE 60M AUTOEXTEND ON;What is the result、

  A.It executes successfully and creates an UNDO tablespace in HR_PD

  B.B.It falls and reports an error because there can be only one undo tablespace in a CDB.

  C.It fails and reports an error because the CONTAINER=ALL clause is not specified in the comman

  D.D.It fails and reports an error because the CONTAINER=CURRENT clause is not specified in the command.

  E.It executes successfully but neither tablespace nor the data file is created.

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• 3Your database has the SRV1 service configured for an application that runs on middle-tier  application server. The application has multiple modules. You enable tracing at the service level by executing the following command:SQL > exec DBMS_MONITOR.SERV_MOD_ACT_TRACE_ENABLE (‘SRV1’);The possible outcome and actions to aggregate the trace files are as follows:1. The command fails because a module name is not specified.2. A trace file is created for each session that is running the SRV1 service.3. An aggregated trace file is created for all the sessions that are running the SRV1 service.4. The trace files may be aggregated by using the trcess utility.5. The trace files be aggregated by using the tkprof utility.Identify the correct outcome and the step to aggregate by using tkprof utility、

  A.1

  B.2 and 4

  C.2 and 5

  D.3 and 4

  E.3 and 5

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• 4You are about to plug a multi-terabyte non-CDB into an existing multitenant container database (CDB) as a pluggable database (PDB).The characteristics of the non-CDB are as follows:、 Version: Oracle Database 12c Releases 1 64-bit、 Character set: WE8ISO8859P15、 National character set: AL16UTF16、 O/S: Oracle Linux 6 64-bitThe characteristics of the CDB are as follows:、 Version: Oracle Database 12c Release 1 64-bit、 Character set: AL32UTF8、 O/S: Oracle Linux 6 64-bitWhich technique should you use to minimize down time while plugging this non-CDB into the CDB、

  A.Transportable database

  B.Transportable tablespace

  C.Data Pump full export / import

  D.The DBMS_PDB package

  E.RMAN

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• 5Which three statements are true about the working of system privileges in a multitenant control database (CDB) that has pluggable databases (PDBs)、

  A.System privileges apply only to the PDB in which they are used.

  B.Local users cannot use local system privileges on the schema of a common user.

  C.The granter of system privileges must possess the set container privilege.

  D.B.Local users cannot use local system privileges on the schema of a common user.C.The granter of system privileges must possess the set container privileg

  E.D.Common users connected to a PDB can exercise privileges across other PDBs.E.System privileges with the with grant option container all clause must be granted to a common user before the common user can grant privileges to other users.

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• 6In your database, you want to ensure that idle sessions that are blocking active are automatically terminated after a specified period of time.How would you accomplish this、

  A.Setting a metric threshold

  B.Implementing Database Resource Manager

  C.Enabling resumable timeout for user sessions

  D.Decreasing the value of the IDLE_TIME resource limit in the default profile

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• 7You Execute the Following command to create a password file in the database server:$ orapwd file = ‘+DATA/PROD/orapwprod entries = 5 ignorecase = N format = 12’Which two statements are true about the password file、

  A.It records the usernames and passwords of users when granted the DBA role.

  B.It contains the usernames and passwords of users for whom auditing is enabled.

  C.Is used by Oracle to authenticate users for remote database administration.

  D.C.Is used by Oracle to authenticate users for remote database administration.D.It records the usernames and passwords of all users when they are added to the OSDBA or OSOPER operating system groups.

  E.It supports the SYSBACKUP, SYSDG, and SYSKM system privileges.

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• 8Identify two situations in which the alert log file is updated.

  A.Running a query on a table returns ORA-600: Internal Error.

  B.Inserting a value into a table returns ORA-01722: invalid number.

  C.Creating a table returns ORA-00955: name us already in used by an existing objects.

  D.Inserting a value into a table returns ORA-00001: unique constraint (SYS.OK_TECHP) violated.

  E.Rebuilding an index using ALTER INDEX . . . REBUILD fails with an ORA-01578: ORACLE data block corrupted (file # 14, block # 50) error.

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• 9Which three statements are true about Oracle Data Pump export and import operations、

  A.You can detach from a data pump export job and reattach later.

  B.Data pump uses parallel execution server processes to implement parallel import.

  C.Data pump import requires the import file to be in a directory owned by the oracle owner.

  D.The master table is the last object to be exported by the data pump.

  E.You can detach from a data pump import job and reattach later.

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• 10In your Database, the TBS PERCENT USED parameter is set to 60 and the TBS PERCENT FREE parameter is set to 20.Which two storage-tiering actions might be automated when using information Lifecycle Management (ILM) to automate data movement、

  A.The movement of all segments to a target tablespace with a higher degree of compression, on a different storage tier, when the source tablespace exceeds TBS PERCENT USED

  B.Setting the target tablespace to read-only

  C.The movement of some segments to a target tablespace with a higher degree of compression, on a different storage tier, when the source tablespace exceeds TBS PERCENT USED

  D.Setting the target tablespace offline

  E.The movement of some blocks to a target tablespace with a lower degree of compression, on a different storage tier, when the source tablespace exceeds TBS PERCENT USED

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