[多项选择]Your multitenant container database has three pluggable databases (PDBs): PDB1, PDB2, and PDB3.Which two RMAN commands may be; used to back up only the PDB1 pluggable database?（）
A. BACKUP PLUGGABLE DATABASE PDB1 while connected to the root container
B. BACKUP PLUGGABLE DATABASE PDB1 while connected to the PDB1 container
C. BACKUP DATABASE while connected to the PDB1 container
D. BACKUP DATABASE while connected to the boot container
E. BACKUP PLUGGABLE database PDB1 while connected to PDB2

[单项选择] Your multitenant container database (CDB) contains a pluggable database, HR_PDB. The default permanent tablespace in HR_PDB is USERDATA. The container database (CDB) is open and you connect RMAN. You want to issue the following RMAN command: RMAN > BACKUP TABLESPACE hr_pdb:userdata; Which task should you perform before issuing the command?（）
A. Place the root container in ARHCHIVELOG mode.
B. Take the user data tablespace offline.
C. Place the root container in the nomount stage.
D. Ensure that HR_PDB is open.

[单项选择] Your multitenant container database (CDB) is running in ARCHIVELOG mode. You connect to the CDB RMAN. Examine the following command and its output: You execute the following command: RMAN > BACKUP DATABASE PLUS ARCHIVELOG; Which data files will be backed up?（）
A. Data files that belong to only the root container
B. Data files that belong to the root container and all the pluggable databases (PDBs)
C. Data files that belong to only the root container and PDB$SEED
D. Data files that belong to the root container and all the PDBs excluding PDB$SEED

[单项选择] In your multitenant container database (CDB) containing pluggable databases (PDB), users complain about performance degradation. How does real-time Automatic database Diagnostic Monitor (ADDM) check performance degradation and provide solutions?（）
A. It collects data from SGA and compares it with a preserved snapshot.
B. It collects data from SGA, analyzes it, and provides a report.
C. It collects data from SGA and compares it with the latest snapshot.
D. It collects data from both SGA and PGA, analyzes it, and provides a report

[单项选择] In your multitenant container database (CDB) with two pluggable database (PDBs). You want to create a new PDB by using SQL Developer. Which statement is true?（）
A. The CDB must be open.
B. The CDB must be in the mount stage.
C. The CDB must be in the nomount stage.
D. Alt existing PDBs must be closed.

[单项选择] Your multitenant container database, CDB1, is running in ARCHIVELOG mode and has two pluggable databases, HR_PDB and ACCOUNTS_PDB. An RMAN backup exists for the database. You issue the command to open ACCOUNTS_PDB and find that the USERDATA.DBF data file for the default permanent tablespace USERDATA belonging to ACCOUNTS_PDB is corrupted. What should you do before executing the commands to restore and recover the data file in ACCOUNTS_PDB?（）
A. Place CDB1 in the mount stage and then the USERDATA tablespace offline in ACCOUNTS_PDb.
B. Place CDB1 in the mount stage and issue the ALTER PLUGGABLE DATABASE accounts_pdb CLOSE IMMEDIATE command.
C. Issue the ALTER PLUGGABLE DATABASE accounts_pdb RESTRICTED command.
D. Take the USERDATA tablespace offline in ACCOUNTS_PDb.

[单项选择] Your multitenant container (CDB) containing three pluggable databases (PDBs) is running in ARCHIVELOG mode. You find that the SYSAUX tablespace is corrupted in the root container. The steps to recover the tablespace are as follows: 1. Mount the CDB. 2. Close all the PDBs. 3. Open the database. 4. Apply the archive redo logs. 5. Restore the data file. 6. Take the SYSAUX tablespace offline. 7. Place the SYSAUX tablespace online. 8. Open all the PDBs with RESETLOGS. 9. Open the database with RESETLOGS. 10. Execute the command SHUTDOWN ABORT. Which option identifies the correct sequence to recover the SYSAUX tablespace?（）
A. 6，5，4，7
B. 10，1，2，5，8
C. 10，1，2，5，4，9，8
D. 10，1，5，8，10

[单项选择] Your 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

[单项选择] Your database has experienced a loss of datafile users_01.dbf, which is associated with a ablespace called USERS. The database is still running. Which answer properly describes the rder of the steps that you would use to recover from this error?（） 1.Shut down the database. 2.Take the users_01.dbf datafile offline with the alter database command. 3.Restore the users_01.dbf datafile from backup media with the required archived redo logs. 4.Restore all users tablespace-related datafiles from backup media. 5.Issue the recover tablespace users command. 6.Issue the recover datafile users_01.dbf command. 7.Start up the database. 8.Bring the users_01.dbf datafile online with the alter database command.
A. 1，3，6，7
B. 2，3，6，8
C. 1，2，3，6，7
D. 1，2，3，6，，7，8
E. 2，3，6，5，7

[单项选择] Your system has been upgraded from Oracle Database 10g to Oracle Database 11g. You imported SQL Tuning Sets (STS) from the previous version. After changing the OPTIMIZER_FEATURE_ENABLE parameter to 10.2.0.4 and running the SQL Performance Analyzer, you observed performance regression for a few SQL statements. What would you do with these SQL statements?（）
A. Set OPTIMIZER_USE_PLAN_BASELINES to FALSE to prevent the use of regressed plans.
B. Capture the plans from the previous version using STS and then load them into the stored outline.
C. Capture the plans from the previous version using STS and then load them into SQL Management Base (SMB).
D. Set OPTIMIZER_CAPTURE_SQL_PLAN_BASELINES to FALSE to prevent the plans from being loaded to the SQL plan baseline.

[单项选择] Your database has experienced a loss of datafile users_01.dbf， which is associated with a ablespace called USERS.  The database is still running.  Which answer properly describes the rder of the steps that you would use to recover from this error？（）   a. Shut down the database.  b. Take the users_01.dbf datafile offline with the alter database command.  c. Restore the users_01.dbf datafile from backup media with the required archived redo logs.  d. Restore all users tablespace-related datafiles from backup media. e. Issue the recover tablespace users command. f. Issue the recover datafile users_01.dbf command. g. Start up the database.  h. Bring the users_01.dbf datafile online with the alter database command. 
A. a， c， f， g
B. b， c， f， h
C. a， b， c， f， g
D. a， b， c， f， g， h
E. b， c， f， e， g

[单项选择] Your ARCHIVELOG-mode database has lost three datafiles and shut down. One is assigned to the SYSTEM tablespace and two are assigned to the USERS tablespace. You can choose from the following steps to recover your database：   a. Restore the three database datafiles that were lost.  b. Issue the Startup Mount command to mount the database.  c. Issue the alter database open command.  d. Issue the alter database open resetlogs command.  e. Recover the database using the recover database command. f. Recover the datafiles with the recover datafile command.  g. Take the datafiles offline.  Which is the correct order of these steps in this case？（）
A. a， b， e， c
B. b， e， d
C. a， b， d， c
D. b， g， c， f
E. a， b， d， f

[单项选择] Your database has a backup that was taken yesterday （Tuesday） between 13：00 and 15：00 hours. This is the only backup you have. You have lost all the archived redo logs generatedsince the previous Monday， but you have archived redo logs available from the previous Sunday and earlier. You now need to restore your backup due to database loss.  To which point can you restore your database？（）  
A.  13：00 on Tuesday.
B.  15：00 on Tuesday.
C.  Up until the last available archived redo log on Sunday.
D.  To any point； all the redo should still be available in the online redo logs.
E.  The database is not recoverable.

[多项选择] Your PROD database has been started using the server parameter file. In your PROD database you are using RMAN for backup and recovery operations. You issue the following commands from the RMAN prompt：     RMAN> CONFIGURE CONTROLFILE AUTOBACKUP OFF；   RMAN> BACKUP DATABASE；   Which files from the database will be backed up as a result of this BACKUP command？（）
A.  control file
B.  all datafiles
C.  password file
D.  online redo log file
E.  archive redo log file
F.  server parameter file
G.  only the SYSTEM datafile