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 in

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?（）

Acquire locks on table queried

Generate redo for statement

Fetch data from disk into memory

Write changes to disk

更多“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 in”相关问题

第1题

Examine the statement： SQL> CREATE TABLESPACE user_data 2> EXTENT MANAGEMENT LOCAL 3> SEGMENT SPACE MANAGEMENT AUTO； Which twp assumptions must be true for this statement to execute successfully？（）A、Oracle Managed Files are used for this instance.B、The USER_DATA tablespace is managed using FET$/UET$ tables.C、The COMPATIBLE initialization parameter must be 9.0.0 or higher.D、Space within segments in the USER_DATA tablespace is managed with freelists.

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第2题

The user HR owns the EMP table. The user HR grants privileges to the user SCOTT by using this command： SQL> GRANT SELECT，INSERT，UPDATE ON emp TO scott WITH GRANT OPTION； The user SCOTT executes this command to grant privileges to the user JIM： SQL> GRANT SELECT，INSERT，UPDATE ON hr.emp TO jim； Now， the user HR decides to revoke privileges from JIM using this command： SQL> REVOKE SELECT，INSERT，UPDATE ON emp FROM jim； Which statement is true after HR issues the REVOKE command（）A、The command fails because SCOTT still has privileges.B、The command succeeds and privileges are revoked from JIM.C、The command fails because HR cannot revoke the privileges from JIM.D、The command succeeds and only HR has the privilege to perform the SELECT， INSERT， and UPDATEoperations on the EMP table.

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第3题

You issue the following statement： SQL> SELECT FIRSTNAME， LASTNAME FROM HR.EMPLOYEE； You receive the following error： 01578： ORACLE data block corrupted （file# 6， block # 54） ORA-01110 ： data file 6： ’u01/oracle/oradata/data1.dbf’ How will you resolve this problem of data block corruption by reducing the mean time to recover （MTTR）？（）A、 by using the DBMS_REPAIR packageB、 by using the DBVERIFY utilityC、 by using Block Media RecoveryD、 by issuing the ANALYZE TABLE HR.EMPLOYEES VALIDATE STRUCTURE command

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第4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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第5题

User A issues the command: LOCK TABLES pets READ; Which command can User B execute against the pets table?（）A、UPDATE pets…B、SELECT….FROM petsC、INSERT INTO pets…D、ALTER TABLE pets…

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第6题

单选题You issue the following statement： SQL> SELECT FIRSTNAME， LASTNAME FROM HR.EMPLOYEE； You receive the following error： 01578： ORACLE data block corrupted （file# 6， block # 54） ORA-01110 ： data file 6： ’u01/oracle/oradata/data1.dbf’ How will you resolve this problem of data block corruption by reducing the mean time to recover （MTTR）？（）Aby using the DBMS_REPAIR packageBby using the DBVERIFY utilityCby using Block Media RecoveryDby issuing the ANALYZE TABLE HR.EMPLOYEES VALIDATE STRUCTURE command

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第7题

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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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 in

题目

更多“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 in”相关问题

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