1z0-497 Oracle Database 12c Essentials exact Exam Questions

Oracle Database 12c Essentials

Last Update 4 hours ago Total Questions : 150

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Question # 41

Which three events signal a database writer (DWR) to write buffers to disk?

The database advances a checkpoint.

A client process commits a transaction.

The redo log buffer becomes full.

A server process cannot find non-dirty blocks after scanning a threshold number of buffers.

A tablespace is changed to read-only status.

The database is shut down in immediate mode.

Question # 42

Which option represents a function of Global Data Services (GDS)?

performs data replication

performs database failovers

replaces the functionality of Oracle Clusterware and Oracle RAC

coordinates site failovers

works seamlessly with Oracle Site Guard

Question # 43

Which is the default isolation level in Oracle Database 12c?

serializable

read-only

read committed

read uncommitted

Question # 44

Your customer has two CDBs: one for Production and one for development. You are asked to create a new development PDB (salesdev) from an existing production PDB (salesprd). Which two options would accomplish this?

You copy all the PDBSSEEDdata files from the production CDB into the development CDB and execute this on the development CDB;

SQL > CREATE PLUGGABLE DATABASE salesdev ADMIN USER salesdm IDENTIFIED by password;

You alter the salesprd source database to open in read-only mode, and start cloning the source database:

SQL > ALTER PLUGGABLE DATABASE salesprd OPEN READ ONLY;

SQL > CREATE PLUGGABLE DATABASE salesdev FROM salesprd;

You alter the salesprd source database to open in read-only mode:

SQL > ALTER PLUGGABLE DATABASE salesprd OPEN READ ONLY;

In the development CDB, you create a databaselink " PRD " that connects to the root of the source CDB, and start cloning the source PDB:

SQL > CREATE PLUGGABLE DATABASE salesdevFROM salesprd@prd;

Connected as the salesprd local DBA, you create an XML using:

SQL > ALTER PLUGGABLE DATABASE salespdb UNPLUG INTO ' /tmp/salesprd-xml ' ;

Copy the XML file and all salesprd-related files to the target CDB and start plugging the copy into the development CDB using:

SQL > CREATE PLUGGABLE DATABASE salesdev USING ' /tmp/salesprd.xml ' ;

Question # 45

Your customer wants to migrate their production database from Oracle Database 10gon AIX to Oracle Database 12con Solaris, and is concerned about the downtime. Which Oracle solution would you recommend?

Active Data Guard

Oracle GoldenGate

Oracle Real Application Clusters

Oracle Transportable Tablespaces

Oracle Cloud Platform as a Service

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