单选题 In your Oracle12c database, you plan to execute the command： SQL> CREATE TABLESPACE tbs1 DATAFILE ‘/u02/oracle/data/tbs01.dbf’ SIZE 50M;
The u02 file system has 1 GB of free space available.
What is the outcome?
A、
It creates a locally managed tablespace with manual segment space management enabled.
B、
It creates a dictionary-managed tablespace with manual segment space management enabled.
C、
It raises an error because extent management is not specified.
D、
It creates a locally managed tablespace with automatic segment space management enabled.
单选题 Your production database uses file system storage. You want to move storage to Oracle Automatic Storage Management (ASM). How would you achieve this?
C、
by using the Database Upgrade Assistant (DBUA)
D、
by using a transportable database
单选题 When is the UNDO_RETENTION parameter value ignored by a transaction?
A、
when the undo tablespace is of a fixed size and retention guarantee is not enabled
B、
when the data file of the undo tablespace is autoextensible
C、
when there are multiple undo tablespaces available in a database
D、
when Flashback Database is enabled
单选题 Examine the parameters for a database Your database has three undo tablespaces and the default undo tablespace is not
autoextensible. Resumable space allocation is not enabled for any sessions in the database
instance. What is the effect on new transactions when all undo space in the default undo
tablespace is in use by active transaction?
A、
Transactions write their undo in a temporary tablespace.
C、
Transactions write their undo in the SYSTEM undo segment.
D、
Transactions wait until space becomes available in UNDOTBS1.
单选题 Your database instance is started by using a sever parameter file (SPFILE). You execute the following command to change the value of the LOG_BUFFER initialization parameter.
ALTER SYSTEM SET LOG_BUFFER=32M;
What is the outcome of this command?
A、
It returns an error because SCOPE should be set to MEMORY.
B、
It returns an error because the value of this parameter cannot be changed dynamically.
C、
The parameter value is changed and it comes into effect as soon as space becomes
available in the SGA.
D、
The parameter value is changed and it comes into effect at the next instance startup.
单选题 What is a requirement for creating a remote database scheduler job?
A、
The remote database job must run as a user that is valid on target remote database
B、
A private database link must be created from the originating database to the target remote database
C、
The target remote database on which the job is scheduled must be Oracle Database 11g Release 2 or later
D、
The target remote database must be on a different host from the originating scheduler database host
单选题 Your database has archive logging enabled and RMAN backups are taken at regular intervals. A data file in the USERS tablespace is damaged. Which command must you execute before
starting the recovery of this tablespace?
D、
ALTER TABLESPACE users OFFLINE
单选题 You want to create a test database as a replica of your production database with minimum intervention from a DBA. Which method would you use?
A、
Use DBCA to create a template from the existing database to contain the database structure
with data files and then use the same template to create the database in the new location.
B、
Use DBCA to create a template from the existing database to contain the database
structure and then manually copy the data by using Oracle Data Pump.
C、
Use Database Configuration Assistant (DBCA) to create a template from the existing
database to contain the database structure.
D、
Create the database by using the CREATE DATABASE … command and manually
import data by using Data Pump.
2021-04-28
共157道
