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Q71. You 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.

Answer: AE


Q72. You notice a high number of waits for the db file scattered read and db file sequential read events in the recent Automatic Database Diagnostic Monitor (ADDM) report. After further investigation, you find that queries are performing too many full table scans and indexes are not being used even though the filter columns are indexed. 

Identify three possible reasons for this.

A. Missing or stale histogram statistics

B. Undersized shared pool

C. High clustering factor for the indexes

D. High value for the DB_FILE_MULTIBLOCK_READ_COUNT parameter

E. Oversized buffer cache

Answer: ACD


Q73. You run a script that completes successfully using SQL*Plus that performs these actions:

1.Creates a multitenant container database (CDB)

2.Plugs in three pluggable databases (PDBs)

3.Shuts down the CDB instance

4.Starts up the CDB instance using STARTUP OPEN READ WRITE Which two statements are true about the outcome after running the script?

A. The seed will be in mount state.

B. The seed will be opened read-only.

C. The seed will be opened read/write.

D. The other PDBs will be in mount state.

E. The other PDBs will be opened read-only.

F. The PDBs will be opened read/write.

Answer: BD


Q74. Which three statements are true about Flashback Database?

A. Flashback logs are written sequentially, and are archived. 

B. Flashback Database uses a restored control file to recover a database.

C. The Oracle database automatically creates, deletes, and resides flashback logs in the Fast Recovery Area. 

D. Flashback Database can recover a database to the state that it was in before a reset logs operation.

E. Flashback Database can recover a data file that was dropped during the span of time of the flashback.

F. Flashback logs are used to restore to the blocks' before images, and then the redo data may be used to roll forward to the desired flashback time.

Answer: CDF


Q75. You executed a DROP USER CASCADE on an Oracle 11g release 1 database and immediately realized that you forgot to copy the OCA. EXAM_RESULTS table to the OCP schema.

The RECYCLE_BIN enabled before the DROP USER was executed and the OCP user has been granted the FLASHBACK ANY TABLE system privilege.

What is the quickest way to recover the contents of the OCA. EXAM_RESULTS table to the OCP schema?

A. Execute FLASHBACK TABLE OCA. EXAM_RESULTS TO BEFORE DROP RENAME TO OCP.EXAM_RESULTS; connected as SYSTEM.

B. Recover the table using traditional Tablespace Point In Time Recovery.

C. Recover the table using Automated Tablespace Point In Time Recovery.

D. Recovery the table using Database Point In Time Recovery.

E. Execute FLASHBACK TABLE OCA. EXAM_RESULTS TO BEFORE DROP RENAME TO EXAM_RESULTS; connected as the OCP user.

Answer: C


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Q76. You must track all transactions that modify certain tables in the sales schema for at least three years.

Automatic undo management is enabled for the database with a retention of one day. 

Which two must you do to track the transactions?

A. Enable supplemental logging for the database.

B. Specify undo retention guarantee for the database.

C. Create a Flashback Data Archive in the tablespace where the tables are stored. 

D. Create a Flashback Data Archive in any suitable tablespace.

E. Enable Flashback Data Archiving for the tables that require tracking.

Answer: DE


Q77. 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.

Answer: B


Q78. Your database is open and the LISTENER listener running. You stopped the wrong listener LISTENER by issuing the following command:

1snrctl > STOP

What happens to the sessions that are presently connected to the database Instance?

A. They are able to perform only queries.

B. They are not affected and continue to function normally.

C. They are terminated and the active transactions are rolled back.

D. They are not allowed to perform any operations until the listener LISTENER is started. 

Answer: B


Q79. The 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;

F. BACKUP SPFILE SECTION SIZE 1M;

G. BACKUP INCREMENTAL LEVEL 0 TABLESPACE SYSAUX SECTION SIZE 100M;

Answer: ABEG


Q80. What is the result of executing a TRUNCATE TABLE command on a table that has Flashback Archiving enabled?

A. It fails with the ORA-665610 Invalid DDL statement on history-tracked message

B. The rows in the table are truncated without being archived. 

C. The rows in the table are archived, and then truncated. 

D. The rows in both the table and the archive are truncated. 

Answer: C