A new report process containing a complex query is written, with high impact on thedatabase. You want to collect basic statistics about query, such as the level of parallelism, total database time, and the number of I/O requests.For the database instance STATISTICS_LEVEL, the initialization parameter is set to TYPICAL and the CONTROL_MANAGEMENT_PACK_ACCESS parameter is set to DIAGNOSTIC+TUNING.What should you do to accomplish this task、

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• 1Your multitenant container database (CDB) contains three pluggable database (PDBs).You find that the control file is damaged. You plan to use RMAN to recover the control file. There are no startup triggers associated with the PDBs.Which three steps should you perform to recover the control file and make the database fully operational、

  A.Mount the container database (CDB) and restore the control file from the control file auto backup.

  B.Recover and open the CDB in NORMAL mode.

  C.Mount the CDB and then recover and open the database, with the RESETLOGS option.

  D.Open all the pluggable databases.

  E.C.Mount the CDB and then recover and open the database, with the RESETLOGS option.D.Open all the pluggable databases.E.Recover each pluggable database.

  F.Start the database instance in the nomount stage and restore the control file from control file auto backup.

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• 2Examine the following command:ALTER SYSTEM SET enable_ddl_logging=FALSE;Which statement is true、

  A.None of the data definition language (DDL) statements are logged in the trace file.

  B.Only DDL commands that resulted in errors are logged in the alert log file.

  C.A new log.xml file that contains the DDL statements is created, and the DDL command details are removed from the alert log file.

  D.Only DDL commands that resulted in the creation of new database files are logged.

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• 3Which three functions are performed by the SQL Tuning Advisor、

  A.Building and implementing SQL profiles

  B.Recommending the optimization of materialized views

  C.Checking query objects for missing and stale statistics

  D.Recommending bitmap, function-based, and B-tree indexes

  E.Recommending the restructuring of SQL queries that are using bad plans

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• 4You are administering a database stored in Automatic Storage management (ASM). The files are stored in the DATA disk group. You execute the following command:SQL > ALTER DISKGROUP data ADD ALIAS ‘+data/prod/myfile.dbf’ FOR ‘+data/prod/myfile.dbf’What is the result、

  A.The file ‘+data.231.54769’ is physically relocated to ‘+data/prod’ and renamed as ‘myfile.dbf’ .

  B.The file ‘+data.231.54769’ is renamed as ‘myfile.dbf’, and copied to ‘+data/prod’ .

  C.The file ‘+data.231.54769’ remains in the same location and a synonym 'myfile.dbf' is create

  D.D.The file ‘myfil

  E.dbf’ is created in ‘+data/prod’ and the reference to ‘+data.231.54769’ in the data dictionary removed.

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• 5You database is running an ARCHIVELOG mode.The following parameter are set in your database instance:LOG_ARCHIVE_FORMAT = arch+%t_%r.arcLOG_ARCHIVE_DEST_1 = ‘LOCATION = /disk1/archive’DB_RECOVERY_FILE_DEST_SIZE = 50GDB_RECOVERY_FILE = ‘/u01/oradata’Which statement is true about the archived redo log files、

  A.They are created only in the location specified by the LOG_ARCHIVE_DEST_1 parameter.

  B.They are created only in the Fast Recovery Area.

  C.They are created in the location specified by the LOG_ARCHIVE_DEST_1 parameter and in the default location $ORACLE_HOME/dbs/arch.

  D.They are created in the location specified by the LOG_ARCHIVE_DEST_1 parameter and the location specified by the DB_RECOVERY_FILE_DEST parameter.

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• 6Identify two valid options for adding a pluggable database (PDB) to an existing multitenant container database (CDB).

  A.Use the CREATE PLUGGABLE DATABASE statement to create a PDB using the files from the SEED.

  B.Use the CREATE DATABASE . . . ENABLE PLUGGABLE DATABASE statement to provision a PDB by copying file from the SEED.

  C.Use the DBMS_PDB package to clone an existing PDB.

  D.B.Use the CREATE DATABASE . . . ENABLE PLUGGABLE DATABASE statement to provision a PDB by copying file from the SEED.C.Use the DBMS_PDB package to clone an existing PDB.D.Use the DBMS_PDB package to plug an Oracle 12c non-CDB database into an existing CDB.

  E.Use the DBMS_PDB package to plug an Oracle 11 g Release 2 (11.2.0.3.0) non-CDB database into an existing CDB.

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• 7Your database supports a DSS workload that involves the execution of complex queries: Currently, the library cache contains the ideal workload for analysis. You want to analyze some of the queries for an application that are cached in the library cache.What must you do to receive recommendations about the efficient use of indexes and materialized views to improve query performance、

  A.Create a SQL Tuning Set (STS) that contains the queries cached in the library cache and run the SQL Tuning Advisor (STA) on the workload captured in the STS.

  B.Run the Automatic Workload Repository Monitor (ADDM).

  C.Create an STS that contains the queries cached in the library cache and run the SQL Performance Analyzer (SPA) on the workload captured in the STS.

  D.Create an STS that contains the queries cached in the library cache and run the SQL Access Advisor on the workload captured in the STS.

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• 8The following parameter are set for your Oracle 12c database instance:OPTIMIZER_CAPTURE_SQL_PLAN_BASELINES=FALSEOPTIMIZER_USE_SQL_PLAN_BASELINES=TRUEYou want to manage the SQL plan evolution task manually. Examine the following steps:1. Set the evolve task parameters.2. Create the evolve task by using the DBMS_SPM.CREATE_EVOLVE_TASK function.3. Implement the recommendations in the task by using theDBMS_SPM.IMPLEMENT_EVOLVE_TASK function.4. Execute the evolve task by using the DBMS_SPM.EXECUTE_EVOLVE_TASK function.5. Report the task outcome by using the DBMS_SPM.REPORT_EVOLVE_TASK function.Identify the correct sequence of steps:

  A.2, 4, 5

  B.2, 1, 4, 3, 5

  C.1, 2, 3, 4, 5

  D.1, 2, 4, 5

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• 9In a recent Automatic Workload Repository (AWR) report for your database, you notice a high number of buffer busy waits. The database consists of locally managed tablespaces with free list managed segments.On further investigation, you find that buffer busy waits is caused by contention on data blocks.Which option would you consider first to decrease the wait event immediately、

  A.Decreasing PCTUSED

  B.Decreasing PCTFREE

  C.Increasing the number of DBWN process

  D.Using Automatic Segment Space Management (ASSM)

  E.Increasing db_buffer_cache based on the V$DB_CACHE_ADVICE recommendation

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• 10Examine this command:SQL > exec DBMS_STATS.SET_TABLE_PREFS (‘SH’, ‘CUSTOMERS’, ‘PUBLISH’, ‘false’);Which three statements are true about the effect of this command、

  A.Statistics collection is not done for the CUSTOMERS table when schema stats are gathered.

  B.Statistics collection is not done for the CUSTOMERS table when database stats are gathered.

  C.Any existing statistics for the CUSTOMERS table are still available to the optimizer at parse time.

  D.B.Statistics collection is not done for the CUSTOMERS table when database stats are gathered.C.Any existing statistics for the CUSTOMERS table are still available to the optimizer at parse tim

  E.D.Statistics gathered on the CUSTOMERS table when schema stats are gathered are stored as pendingE.Statistics gathered on the CUSTOMERS table when database stats are gathered are stored as pending statistics.

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