单选题The user SCOTT executes the following command successfully to increase the salary values in one of his sessions： SQL UPDATE emp SET sal=sal*1.15 WHERE deptno=20； Before SCOTT ends the transaction， user HR who has the privileges on EMP table executes a query to fetch the salary details but finds the old salary values instead of the increased values. Why does HR still see the old data？（）Abecause of redo data from redo log fileBbecause of data from database buffer cacheCbecause of data from a temporary tablespaceDbecause of undo data from the undo tablespace
单选题
The user SCOTT executes the following command successfully to increase the salary values in one of his sessions： SQL> UPDATE emp SET sal=sal*1.15 WHERE deptno=20； Before SCOTT ends the transaction， user HR who has the privileges on EMP table executes a query to fetch the salary details but finds the old salary values instead of the increased values. Why does HR still see the old data？（）
A
because of redo data from redo log file
B
because of data from database buffer cache
C
because of data from a temporary tablespace
D
because of undo data from the undo tablespace
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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.
A redaction policy was added to the SAL column of the SCOTT.EMP table:All users have their default set of system privileges.For which three situations will data not be redacted?() A. SYS sessions, regardless of the roles that are set in the sessionB. SYSTEM sessions, regardless of the roles that are set in the sessionC. SCOTT sessions, only if the MGR role is set in the sessionD. SCOTT sessions, only if the MGR role is granted to SCOTTE. SCOTT sessions, because he is the owner of the tableF. SYSTEM session, only if the MGR role is set in the session
授予sa用户在SCOTT.EMP表中SAL列的更新权限的语句是()。 A.GRANT CHANGE ON SCOTT.EMP TO SAB.GRANT UPDATE ON SCOTT.EMP（SAL） TO SAC.GRANT UPDATE （SAL） ON SCOTT.EMP TO SAD.GRANT MODIFY ON SCOTT.EMP（SAL） TO SA
The session of user SCOTT receives the following error after executing an UPDATE command onthe EMP table： ERROR at line 1： ORA-00060： deadlock detected while waiting for resource On investigation， you find that a session opened by user JIM has a transaction that caused the deadlock. two statements are true regarding the session of SCOTT in this scenario（）A、The session is terminated after receiving the error and JIM can continue with his transaction.B、SCOTT should perform a COMMIT or ROLLBACK to allow JIM to continue with his transaction.C、The session is rolled back after receiving the error and JIM can continue with his transaction.D、SCOTT has to reexecute the last command in the transaction after he commits the transaction.
授予sa用户在SCOTT.EMP表中SAL列的更新权限的语句是（）。A、GRANT CHANGE ON SCOTT.EMP TO SAB、GRANT UPDATE ON SCOTT.EMP（SAL） TO SAC、GRANT UPDATE （SAL） ON SCOTT.EMP TO SAD、GRANT MODIFY ON SCOTT.EMP（SAL） TO SA
The HR user creates a view with this command： SQL CREATE VIEW emp_v AS SELECT * FROM scott.emp； Now HR wants to grant the SELECT privilege on the EMP_V view to the JIM user. Which statement is true in this scenario？（）A、HR can grant the privilege to JIM but without GRANT OPTION.B、HR can grant the privilege to JIM because HR is the owner of the view.C、SCOTT has to grant the SELECT privilege on the EMP table to JIM before this operation.D、HR needs the SELECT privilege on the EMP table with GRANT OPTION from SCOTT for this operation.
You execute the following piece of code with appropriate privileges: User SCOTT has been granted theCREATE SESSION privilege and the MGR role.Which two statements are true when a session logged in as SCOTT queries the SAL column in the viewand the table?（）A、Data is redacted for the EMP.SAL column only if the SCOTT session does not have the MGR role set.B、Data is redacted for EMP.SAL column only if the SCOTT session has the MGR role set.C、Data is never redacted for the EMP_V.SAL column.D、Data is redacted for the EMP_V.SAL column only if the SCOTT session has the MGR role set.E、Data is redacted for the EMP_V.SAL column only if the SCOTT session does not have the MGR role set.
You execute the following command to audit the database activities： SQL AUDIT DROP ANY TABLE BY scott BY SESSION WHENEVER SUCCESSFUL； What is the effect of this command？（）A、One audit record is created for the whole session if user SCOTT successfully drops one or more tables in his session.B、One audit record is created for every session when any user successfully drops a table owned by SCOTT.C、One audit record is created for each successful DROP TABLE command executed by any user to drop tables owned by SCOTT.D、One audit record is generated for the session when SCOTT grants the DROP ANY TABLE privilege to other users in his session.E、One audit record is created for each successful DROP TABLE command executed in the session of SCOTT.
In which two scenarios should you issue the following command？（） FLASHBACK TABLE SCOTT.EMP TO TIMESTAMP SYSTIMESTAP- INTERVAL ’15’ MINUTE；A、 when the schema of the user， SCOTT， was deleted by mistake 15 minutes agoB、 when the table EMP of the SCOTT schema was dropped by mistake 15 minutes agoC、 when some rows of the table， EMP， in the SCOTT schema were deleted by mistake 15 minutes agoD、 when some incorrect values were inserted in the EMP table in the user Scott’s schema during the last 15 minutesE、 never， because FLASHBACK TABLE is not a valid command in Oracle 10g.
A redaction policy was added to the SAL column of the SCOTT.EMP table: All users have their default set of system privileges. For which three situations will data not be redacted?（）A、SYS sessions, regardless of the roles that are set in the sessionB、SYSTEM sessions, regardless of the roles that are set in the sessionC、SCOTT sessions, only if the MGR role is set in the sessionD、SCOTT sessions, only if the MGR role is granted to SCOTTE、SCOTT sessions, because he is the owner of the tableF、SYSTEM session, only if the MGR role is set in the session
User SCOTT executes the following command on the EMP table but has not issued COMMIT， ROLLBACK， or any data definition language （DDL） command： SQL SELECT ename FROM emp 2 WHERE job=’CLERK’ FOR UPDATE OF empno； SCOTT has opened another session to work with the database instance. Which three operations wouldwait when issued in SCOTT’s second session（）A、LOCK TABLE emp IN SHARE MODE；B、LOCK TABLE emp IN EXCLUSIVE MODE；C、UPDATE emp SET sal=sal*1.2 WHERE job=MANAGER；D、INSERT INTO emp（empno，ename） VALUES （1289，’Harry’）；E、SELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno；
The user SCOTT executes the following command successfully to increase the salary values in one of his sessions： SQL UPDATE emp SET sal=sal*1.15 WHERE deptno=20； Before SCOTT ends the transaction， user HR who has the privileges on EMP table executes a query to fetch the salary details but finds the old salary values instead of the increased values. Why does HR still see the old data？（）A、because of redo data from redo log fileB、because of data from database buffer cacheC、because of data from a temporary tablespaceD、because of undo data from the undo tablespace
User SCOTT executes the following command on the EMP table but has not issued COMMIT， ROLLBACK， orany data definition language （DDL） command： SQL SELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno； SCOTT has opened another session to work with the database instance. Which three operations would waitwhen issued in SCOTT’s second session（）A、LOCK TABLE emp IN SHARE MODE；B、LOCK TABLE emp IN EXCLUSIVE MODE；C、UPDATE emp SET sal=sal*1.2 WHERE job=ANAGER？UPDATE emp SET sal=sal*1.2 WHERE job=？ANAGER？D、INSERT INTO emp（empno，ename） VALUES （1289，’Harry’）；E、SELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno
User A executes the following command to update the TRANS table） SQL UPDATE B.trans SET tr_amt=tr_amt+500 WHERE c_code=’C005’； Before user A issues a COMMIT or ROLLBACK command， user B executes the following command on the TRANS table： SQl ALTER TABLE trans MODIFY （tr_type VARCHAR2 （3））； What would happen in this scenario？（）A、The transaction for user A is rolled back.B、The ALTER TABLE command modifies the column successfully.C、The ALTER TABLE command fails due to the resource being busy.D、The ALTER TABLE command waits until user A ends the transaction.
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.
User SCOTT executes the following command on the EMP table but has not issued COMMIT， ROLLBACK，or any data definition language （DDL） command： SQL SELECT job FROM emp 2 WHERE job=’CLERK’ FOR UPDATE OF empno; SCOTT has opened another session to work with the database. Which three operations would wait when issued in SCOTT’s second session？（）A、LOCK TABLE emp IN SHARE MODE;B、LOCK TABLE emp IN EXCLUSIVE MODE;C、DELETE FROM emp WHERE job=’MANAGER’;D、INSERT INTO emp（empno，ename） VALUES （1289，’Dick’）;E、SELECT job FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno;
多选题The session of user SCOTT receives the following error after executing an UPDATE command onthe EMP table： ERROR at line 1： ORA-00060： deadlock detected while waiting for resource On investigation， you find that a session opened by user JIM has a transaction that caused the deadlock. two statements are true regarding the session of SCOTT in this scenario（）AThe session is terminated after receiving the error and JIM can continue with his transaction.BSCOTT should perform a COMMIT or ROLLBACK to allow JIM to continue with his transaction.CThe session is rolled back after receiving the error and JIM can continue with his transaction.DSCOTT has to reexecute the last command in the transaction after he commits the transaction.
多选题You execute the following piece of code with appropriate privileges: User SCOTT has been granted theCREATE SESSION privilege and the MGR role.Which two statements are true when a session logged in as SCOTT queries the SAL column in the viewand the table?（）AData is redacted for the EMP.SAL column only if the SCOTT session does not have the MGR role set.BData is redacted for EMP.SAL column only if the SCOTT session has the MGR role set.CData is never redacted for the EMP_V.SAL column.DData is redacted for the EMP_V.SAL column only if the SCOTT session has the MGR role set.EData is redacted for the EMP_V.SAL column only if the SCOTT session does not have the MGR role set.
单选题View the Exhibit and examine the parameters. User A executes the following command to update the TRANS table： SQL UPDATE B.trans SET tr_amt=tr_amt+500 WHERE c_code=’C005’； Before user A issues a COMMIT or ROLLBACK command， user B executes the following command onthe TRANS table： SQL ALTER TABLE trans MODIFY （tr_type VARCHAR2（3））； What would happen in this scenario（）A The ALTER TABLE command modifies the column successfully.B The DDL operation gets higher priority and transaction for user a is rolled back.C The ALTER TABLE command waits indefinitely until user a ends the transaction.D The ALTER TABLE command fails after waiting for 60 seconds due to the resource being busy.
单选题View the Exhibit and examine the parameters. User A executes the following command to update the TRANStable： SQL UPDATE B.trans SET tr_amt=tr_amt+500 WHERE c_code=’C005’； Before user A issues a COMMIT orROLLBACK command， user B executes the following command on the TRANS table： SQL ALTER TABLE trans MODIFY （tr_type VARCHAR2（3））； What would happen in this scenario（）A The ALTER TABLE command modifies the column successfully.B The DDL operation gets higher priority and transaction for user A is rolled back.C The ALTER TABLE command waits indefinitely until user A ends the transaction.D The ALTER TABLE command fails after waiting for 60 seconds due to the resource being busy
单选题All the database users are presently connected to the database instance and working. The HR user hasopened three database sessions and executed the following command in one of his sessions：SQL UPDATE persons SET ccode=’U031’ WHERE ccode=’U029’； 123 rows updated.SQL DELETE FROM persons WHERE exp=’Y’；3 rows deleted. The SYS user opens a new session after HR executed the above commands. Which sessions can see theeffect of the UPDATE and DELETE commands（）AAll sessions of the HR user onlyBAll sessions of the HR user and the SYS userCThe session of the HR user that executed the commandsDAll the sessions for which the database users have access privilege to the PERSONS table
单选题The HR user creates a view with this command： SQL CREATE VIEW emp_v AS SELECT * FROM scott.emp； Now HR wants to grant the SELECT privilege on the EMP_V view to the JIM user. Which statement is true in this scenario？（）AHR can grant the privilege to JIM but without GRANT OPTION.BHR can grant the privilege to JIM because HR is the owner of the view.CSCOTT has to grant the SELECT privilege on the EMP table to JIM before this operation.DHR needs the SELECT privilege on the EMP table with GRANT OPTION from SCOTT for this operation.
单选题授予sa用户在SCOTT.EMP表中SAL列的更新权限的语句是（）。AGRANT CHANGE ON SCOTT.EMP TO SABGRANT UPDATE ON SCOTT.EMP（SAL） TO SACGRANT UPDATE （SAL） ON SCOTT.EMP TO SADGRANT MODIFY ON SCOTT.EMP（SAL） TO SA
单选题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（）AThe command fails because SCOTT still has privileges.BThe command succeeds and privileges are revoked from JIM.CThe command fails because HR cannot revoke the privileges from JIM.DThe command succeeds and only HR has the privilege to perform the SELECT， INSERT， and UPDATEoperations on the EMP table.
单选题User A executes the following command to update the TRANS table） SQL UPDATE B.trans SET tr_amt=tr_amt+500 WHERE c_code=’C005’； Before user A issues a COMMIT or ROLLBACK command， user B executes the following command on the TRANS table： SQl ALTER TABLE trans MODIFY （tr_type VARCHAR2 （3））； What would happen in this scenario？（）AThe transaction for user A is rolled back.BThe ALTER TABLE command modifies the column successfully.CThe ALTER TABLE command fails due to the resource being busy.DThe ALTER TABLE command waits until user A ends the transaction.
多选题User SCOTT executes the following command on the EMP table but has not issued COMMIT， ROLLBACK， or any data definition language （DDL） command： SQL SELECT ename FROM emp 2 WHERE job=’CLERK’ FOR UPDATE OF empno； SCOTT has opened another session to work with the database instance. Which three operations wouldwait when issued in SCOTT’s second session（）ALOCK TABLE emp IN SHARE MODE；BLOCK TABLE emp IN EXCLUSIVE MODE；CUPDATE emp SET sal=sal*1.2 WHERE job=MANAGER；DINSERT INTO emp（empno，ename） VALUES （1289，’Harry’）；ESELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno；
多选题User SCOTT executes the following command on the EMP table but has not issued COMMIT， ROLLBACK， orany data definition language （DDL） command： SQL SELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno； SCOTT has opened another session to work with the database instance. Which three operations would waitwhen issued in SCOTT’s second session（）ALOCK TABLE emp IN SHARE MODE；BLOCK TABLE emp IN EXCLUSIVE MODE；CUPDATE emp SET sal=sal*1.2 WHERE job=ANAGER？UPDATE emp SET sal=sal*1.2 WHERE job=？ANAGER？DINSERT INTO emp（empno，ename） VALUES （1289，’Harry’）；ESELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno