You are about to plug a multi-terabyte non-CDB into an exist-最需题库

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1Which 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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2Examine the commands executed to monitor database operations:$> conn sys oracle/oracle@prod as sysdbaSQL > VAR eid NUMBERSQL > EXEC: eid := DBMS_SQL_MONITOR.BEGIN_OPERATION (‘batch_job’ , FORCED_TRACKING => ‘Y’);Which two statements are true、
A.Database operations will be monitored only when they consume a significant amount ofresource.
B.Database operations for all sessions will be monitored.
C.Database operations will be monitored only if the STATISTICS_LEVEL parameter is set to TYPICAL and CONTROL_MANAGEMENT_PACK_ACCESS is set DIAGNISTIC + TUNING.
D.C.Database operations will be monitored only if the STATISTICS_LEVEL parameter is set to TYPICAL and CONTROL_MANAGEMENT_PACK_ACCESS is set DIAGNISTIC + TUNING.D.Only DML and DDL statements will be monitored for the session.
E.All subsequent statements in the session will be treated as one database operation and will be monitored.
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3Flashback is enabled for your multitenant container database (CDB), which contains two pluggable database (PDBs). A local user was accidently dropped from one of the PDBs.You want to flash back the PDB to the time before the local user was dropped. You connect to the CDB and execute the following commands:SQL > SHUTDOWN IMMEDIATESQL > STARTUP MOUNTSQL > FLASHBACK DATABASE to TIME “TO_DATE (‘08/20/12’ , ‘MM/DD/YY’)”;Examine following commands:1. ALTER PLUGGABLE DATABASE ALL OPEN;2. ALTER DATABASE OPEN;3. ALTER DATABASE OPEN RESETLOGS;Which command or commands should you execute next to allow updates to the flashback back schema、
A.Only 1
B.Only 2
C.Only 3
D.3 and 1
E.1 and 2
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4The persistent configuration settings for RMAN have default for all parameters.Identify four RMAN commands that produce a multi-section backup.
A.BACKUP TABLESPACE SYSTEM SECTION SIZE 100M;
B.BACKUP AS COPY TABLESPACE SYSTEM SECTION SIZE 100M;
C.BACKUP ARCHIVELOG ALL SECTION SIZE 25M;
D.BACKUP TABLESPACE "TEMP" SECTION SIZE 10M;
E.BACKUP TABLESPACE "UNDO" INCLUDE CURRENT CONTROLFILE SECTION SIZE 100M;
G.BACKUP SPFILE SECTION SIZE 1M;
H.A.BACKUP TABLESPACE SYSTEM SECTION SIZE 100M;B.BACKUP AS COPY TABLESPACE SYSTEM SECTION SIZE 100M;C.BACKUP ARCHIVELOG ALL SECTION SIZE 25M;D.BACKUP TABLESPACE "TEMP" SECTION SIZE 10M;E.BACKUP TABLESPACE "UNDO" INCLUDE CURRENT CONTROLFILE SECTION SIZE 100M;F.BACKUP SPFILE SECTION SIZE 1M;G.BACKUP INCREMENTAL LEVEL 0 TABLESPACE SYSAUX SECTION SIZE 100M;
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5You have altered a non-unique index to be invisible to determine if queries execute within an acceptable response time without using this index.Which two are possible if table updates are performed which affect the invisible index columns、
A.The index remains invisible.
B.The index is not updated by the DML statements on the indexed table.
C.The index automatically becomes visible in order to have it updated by DML on the table.
D.The index becomes unusable but the table is updated by the DML.
E.The index is updated by the DML on the table.
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6Your 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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7Your 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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8Which 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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9You 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、
A.The database must have multiplexed redo logs for the flashback to succeed.
B.The database must be MOUNTED for the flashback to succeed.
C.The database must use block change tracking for the flashback to succee
D.B.The database must be MOUNTED for the flashback to succeed.C.The database must use block change tracking for the flashback to succeed.D.The database must be opened in restricted mode for the flashback to succeed.
E.The database must be opened with the RESETLOGS option after the flashback is complete.
F.The database must be opened in read-only mode to check if the database has been flashed back to the correct SCN.
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10In 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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