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Vendor: Oracle
Certifications: Oracle Database 12c
Exam Name: Oracle Database 12c: RAC and Grid Infrastructure Administration
Exam Code: 1Z0-068
Total Questions: 157 Q&As
1Z0-068 dumps
QUESTION 1
In 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
Correct Answer: D

QUESTION 2
You use the segment advisor to help determine objects for which space may be reclaimed. 1Z0-068 dumps
Which three statements are true about the advisor given by the segment advisor?
A. It may advise the use of online table redefinition for tables in dictionary managed tablespace.
B. It may advise the use of segment shrink for tables in dictionary managed tablespaces it the no chained rows.
C. It may advise the use of online table redefinition for tables in locally managed tablespaces
D. It will detect and advise about chained rows.
E. It may advise the use of segment shrink for free list managed tables.
Correct Answer: BCD

QUESTION 3
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?
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 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.
Correct Answer: BE

QUESTION 4
Which three resources might be prioritized between competing pluggable databases when creating a multitenant container database plan (CDB plan) using Oracle Database Resource Manager?
A. Maximum Undo per consumer group
B. Maximum Idle time
C. Parallel server limit
D. CPU
E. Exadata I/O
F. Local file system I/O
Correct Answer: ACD

QUESTION 5
You conned using SQL Plus to the root container of a multitenant container database (CDB) with SYSDBA privilege.The CDB has several pluggable databases (PDBs) open in the read/write mode.
There are ongoing transactions in both the CDB and PDBs.
What happens alter issuing the SHUTDOWN TRANSACTIONAL statement?
A. The shutdown proceeds immediately. The shutdown proceeds as soon as all transactions in the PDBs are either committed or rolled hack.
B. The shutdown proceeds as soon as all transactions in the CDB are either committed or rolled back.
C. The shutdown proceeds as soon as all transactions in both the CDB and PDBs are either committed or rolled back.
D. The statement results in an error because there are open PDBs.
Correct Answer: B

QUESTION 6
Which statement is true about Enterprise Manager (EM) express in Oracle Database 12c?
A. By default, EM express is available for a database after database creation.
B. You can use EM express to manage multiple databases running on the same server.
C. You can perform basic administrative tasks for pluggable databases by using the EM express interface.
D. You cannot start up or shut down a database Instance by using EM express.
E. You can create and configure pluggable databases by using EM express.
Correct Answer: A

QUESTION 7
After implementing full Oracle Data Redaction, 1Z0-068 dumps you change the default value for the NUMBER data type as follows:
1Z0-068 dumps
After changing the value, you notice that FULL redaction continues to redact numeric data with zero.
What must you do to activate the new default value for numeric full redaction?
A. Re-enable redaction policies that use FULL data redaction.
B. Re-create redaction policies that use FULL data redaction.
C. Re-connect the sessions that access objects with redaction policies defined on them.
D. Flush the shared pool.
E. Restart the database instance.
Correct Answer: E

QUESTION 8
Which three statements are true regarding the use of the Database Migration Assistant for Unicode (DMU)?
A. A DBA can check specific tables with the DMU
B. The database to be migrated must be opened read-only.
C. The release of the database to be converted can be any release since 9.2.0.8.
D. The DMU can report columns that are too long in the converted characterset.
E. The DMU can report columns that are not represented in the converted characterset.
Correct Answer: ADE

QUESTION 9
You notice a performance change in your production Oracle 12c database. You want to know which change caused this performance difference.
Which method or feature should you use?
A. Compare Period ADDM report
B. AWR Compare Period report
C. Active Session History (ASH) report
D. Taking a new snapshot and comparing it with a preserved snapshot
Correct Answer: B

QUESTION 10
You notice that the elapsed time for an important database scheduler Job is unacceptably long.
The job belongs to a scheduler job class and window.
Which two actions would reduce the job’s elapsed time?
A. Increasing the priority of the job class to which the job belongs
B. Increasing the job’s relative priority within the Job class to which it belongs
C. Increasing the resource allocation for the consumer group mapped to the scheduler job’s job class within the plan mapped to the scheduler window
D. Moving the job to an existing higher priority scheduler window with the same schedule and duration
E. Increasing the value of the JOB_QUEUE_PROCESSES parameter
F. Increasing the priority of the scheduler window to which the job belongs
Correct Answer: BC

QUESTION 11
Which two are true concerning a multitenant container database with three pluggable database? 1Z0-068 dumps
A. All administration tasks must be done to a specific pluggable database.
B. The pluggable databases increase patching time.
C. The pluggable databases reduce administration effort.
D. The pluggable databases are patched together.
E. Pluggable databases are only used for database consolidation.
Correct Answer: CE

QUESTION 12
A warehouse fact table in your Oracle 12c Database is range-partitioned by month and accessed frequently with queries that span multiple partitions.
The table has a local prefixed, range partitioned index.
Some of these queries access very few rows in some partitions and all the rows in other partitions, but these queries still perform a full scan for all accessed partitions.
This commonly occurs when the range of dates begins at the end of a month or ends close to the start of a month. You want an execution plan to be generated that uses indexed access when only a few rows are accessed from a segment, while still allowing full scans for segments where many rows are returned.
Which three methods could transparently help to achieve this result?
A. Using a partial local Index on the warehouse fact table month column with indexing disabled to the table partitions that return most of their rows to the queries.
B. Using a partial local Index on the warehouse fact table month column with indexing disabled for the table partitions that return a few rows to the queries.
C. Using a partitioned view that does a UNION ALL query on the partitions of the warehouse fact table, which retains the existing local partitioned column.
D. Converting the partitioned table to a partitioned view that does a UNION ALL query on the monthly tables, which retains the existing local partitioned column.
E. Using a partial global index on the warehouse fact table month column with indexing disabling for the table partitions that return most of their rows to the queries.
F. Using a partial global index on the warehouse fact table month column with indexing disabled for the table partitions that return a few rows to the queries.
Correct Answer: BCE

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