A user issues a SELECT command against the Oracle database.

题目
单选题
A user issues a SELECT command against the Oracle database. Which of the following choices describes a step that Oracle will execute in support of this statement?()
A

Acquire locks on table queried 

B

Generate redo for statement 

C

Fetch data from disk into memory 

D

Write changes to disk

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相似问题和答案

第1题:

The user Sue issues this SQL statement:GRANT SELECT ON sue. EMP TO alice WITH GRANT OPTION; The user Alice issues this SQL statement:GRANT SELECT ON sue. EMP TO reena WITH GRANT OPTION; The user Reena issues this SQL statement:GRANT SELECT ON sue. EMP TO timber;The user Sue issues this SQL statement:REVOKE select on sue. EMP FROM alice;For which users does the revoke command revoke SELECT privileges on the SUE.EMP table?()

A. Alice only

B. Alice and Reena

C. Alice, Reena, and Timber

D. Sue, Alice, Reena, and Timber


参考答案:C

第2题:

The DBA issues this SQL command:What privileges does the user Scott have at this point?()

A. No privileges.

B. Only the SELECT privilege.

C. Only the CONNECT privilege.

D. All the privileges of a default user.


参考答案:A

第3题:

You are in the process of creating a virtual private catalog in your Oracle Database 11g database. The PROD1, PROD2, and PROD3 Oracle Database 10g databases are registered in the base recovery catalog. The database user who owns the base recovery catalog is CATOWNER. CATOWNER executes the following command to grant privileges to a new user VPC1 using Oracle Database 11g RMAN executables:What is the outcome of the above commands?()

A. They execute and create a virtual catalog for pre-Oracle 11g clients.

B. They produce an error because PROD1 and PROD2 databases belong to the older version.

C. They produce an error because you need to connect as CATOWNER to execute this packaged procedure.

D. They produce an error because you need to connect to the target database to execute this packaged procedure.


参考答案:A

第4题:

What type of protection is implemented when the DBA issues the ALTER DATABASE SET STANDBY DATABASE PROTECTED; command?()

  • A、The standby database is protected against write operations. 
  • B、The primary database is protected against write operations. 
  • C、The primary database is protected against data loss and data divergence. 
  • D、The standby database is protected against data loss and data divergence. 

正确答案:C

第5题:

How would you grant the RVPC user access to specific RMAN database records in the RMAN virtual private catalog?()  

  • A、 Issue the grant command from the SYS user (or equivalent) of the target database.
  • B、 Issue the grant command from the SYS user (or equivalent) of the recovery-catalog database.
  • C、 Issue the grant command from the recovery catalog-owning schema user account in the recovery catalog.
  • D、 Issue the grant command from RMAN when connected to the recovery catalog-owning schema.
  • E、 Issue the grant command from RMAN when connected to the target database.

正确答案:D

第6题:

View the Exhibit for some of the current parameter settings. A user logs in to the HR schema and issues the following commands:SQL> CREATE TABLE emp(empno NUMBER(3),ename VARCHAR2(20),sal NUMBER(8,2));SQL> INSERT INTO emp(empno,ename) VALUES(1,‘JAMES‘);At this moment, a second user also logs in to the HR schema and issues the following command:SQL> ALTER TABLE emp MODIFY sal NUMBER(10,2);What happens in the above scenario?()

A. The second user‘s session immediately produces the resource busy error.

B. The second user‘s command executes successfully.

C. The second user‘s session waits for a time period before producing the resource busy error.

D. A deadlock is created.


参考答案:C

第7题:

In a TCP/IP network, which of the following protocols is involved when a user issues a ping command?()

  • A、TCP
  • B、UDP
  • C、ICMP
  • D、SMTP

正确答案:C

第8题:

The DBA issues this SQL command: CREATE USER scott IDENTIFIED by tiger; What privileges does the user Scott have at this point?()

A. no privileges

B. only the SELECT privilege

C. only the CONNECT privilege

D. all the privileges of a default user


参考答案:A

第9题:

You install a non-RAC Oracle Database. During Installation, the Oracle Universal Installer (OUI) prompts you to enter the path of the Inventory directory and also to specify an operating system group name. Which statement is true?()

  • A、The ORACLE_BASE base parameter is not set.
  • B、The installation is being performed by the root user.
  • C、The operating system group that is specified should have the root user as its member.
  • D、The operating system group that is specified must have permission to write to the inventory directory

正确答案:D

第10题:

The DBA issues this SQL command:CREATE USER scott IDENTIFIED by tiger;What privileges does the user Scott have at this point?()

  • A、no privileges
  • B、only the SELECT privilege
  • C、only the CONNECT privilege
  • D、all the privileges of a default user

正确答案:A

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