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
参考解析
解析：
暂无解析
相关考题：
The user SYS creates a job by using the following command:Which two statements are true about the job that was created by the preceding command?() A. The job is enabled by default after creationB. The job is automatically dropped after the end dateC. The job executes with the privileges of the user SYSD.
You executed the following command to drop a user:DROP USER scott CASCADE;Which two statements regarding the above command are correct?() A. All the objects of scott are moved to the Recycle Bin.B. Any objects in the Recycle Bin belonging to scott are purged.C. All the objects owned by scott are permanently dropped from the database.D. All the objects of scott in the Recycle Bin must be purged before executing the DROP command.E. Any objects in the Recycle Bin belonging to scott will not be affected by the above DROP command.
Evaluate the following SQL statement used to create the PRODUCTS table:Which statement is true regarding this command?() A. It executes successfully but partition pruning cannot happen for this partition key.B. It produces an error because the TOTAL_VALUE column cannot be used as a partition key.C. It produces an error because compression cannot be used for the TOTAL_VALUE partition key.D. It executes successfully but the values in the TOTAL_VALUE column would not be physically stored in the partitions.
The DBA issues this SQL command: CREATE USER scott IDENTIFIED by tiger; What privileges does the user Scott have at this point?() A. no privilegesB. only the SELECT privilegeC. only the CONNECT privilegeD. all the privileges of a default user
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.
The user SYS creates a job by using the following command:Which two statements are true about the job that was created by the preceding command? ()(Choose two.) A. The job is enabled by default after creationB. The job is automatically dropped after the end dateC. The job executes with the privileges of the user SYSD. The globalization environment that exists at the time of the job creation prevails at the job runs
A sequence was created with the DDL statement shown below:CREATE SEQUENCE my_seq START WITH 5 INCREMENT BY 5 CACHE 5 User1 successfully executes the following statements in Connection1: VALUES NEXT VALUE FOR my_seq INTO :con1hvar VALUES NEXT VALUE FOR my_seq INTO :con1hvar User2 successfully executes the following statement in Connection2: VALUES NEXT VALUE FOR my_seq INTO :con2hvar After User1 User2 are finished, User3 executes the following statement in Connection3: SELECT NEXT VALUE FOR my_seq FROM sysibm.sysdummy1Which value will be returned by the query?（）A、20B、25C、50D、55
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.
Your tnsnames.ora file has the following entry for the service alias ORCL： ORCL = （DESCRIPTION = （ADDRESS = （PROTOCOL = TCP） （HOST = 10.156.24.216） （PORT = 1521）） （CONNECT_DATA = （SERVER = DEDICATED） （SERVICE_NAME = orcl.oracle.com） ） ） The TNSPING command executes successfully when tested with ORCL but you are not able to connect to the database instance with the following command： SQL CONNECT scott/tiger@orcl What could be the reason for this？（）A、The listener is not running at the server.B、The TNS_ADMIN environmental variable is set to a wrong value.C、The orcl.oracle.com database service is not registered with the listener.D、The DEFAULT_DOMAIN parameter is set to a wrong value in the SQLNET.ORA file.
The tnsnames.ora file has an entry for the service alias ORCL as follows:The TNS ping command executes successfully when tested with ORCL; however, from the same OS usersession, you are not able to connect to the database instance with the following command:SQL CONNECT scott/tiger@orcl What could be the reason for this?（）A、The listener is not running on the database node.B、The TNS_ADMIN environment variable is set to the wrong value.C、The orcl.oracle.com database service is not registered with the listener.D、The DEFAULT_DOMAIN parameter is set to the wrong value in the sqlnet.ora file.E、The listener is running on a different port.
The DBA issues this SQL command:CREATE USER scott IDENTIFIED by tiger;What privileges does the user Scott have at this point?（）A、no privilegesB、only the SELECT privilegeC、only the CONNECT privilegeD、all the privileges of a default user
You issue the following code： EXEC DBMS_RESOURCE_MANAGER_PRIVS.GRANT_SWITCH_CONSUMER_GROUP （’SCOTT’ ’GRP1’， TRUE）； What will be the result of executing the above code？（） A、 The switch privilege will be granted to the user， Scott， for changing the consumer group to GRP1.B、 The switch privilege will be granted to the user， Scott， for changing the consumer group from GRP1 to any other group.C、 The code will not execute successfully because there is no GRANT_SWITCH_CONSUMER_GROUP procedure in the DBMS_RESOURCE_MANAGER_PRIVS package.D、The code will execute successfully but no privilege will be granted to the user， Scott.
User A executes the following command to drop a large table in your database：SQL DROP TABLE trans； While the drop table operation is in progress， user B executes the following command on the same table：SQL DELETE FROM trans WHERE tr_type=’SL’； Which statement is true regarding the DELETE command（）A、It fails to delete the records because the records are locked in SHARE mode.B、It deletes the rows successfully because the table is locked in SHARE modeC、It fails to delete the records because the table is locked in EXCLUSIVE mode.D、It deletes the rows successfully because the table is locked in SHARE ROW EXCLUSIVE mode.
单选题The DBA issues this SQL command: CREATE USER scott IDENTIFIED by tiger; What privileges does the user Scott have at this point?（）Ano privilegesBonly the SELECT privilegeConly the CONNECT privilegeDall the privileges of a default user
单选题What will be the result of using the SQL DROP USER SCOTT CASCADE； command？（）A The user， Scott， is dropped， all the objects in Scott’s schema are placed in the Recycle Bin， and the objects that are already in the Recycle Bin are dropped.B The user， Scott， is dropped， all the objects in Scott’s schema are placed in the Recycle Bin， and all the objects in the Recycle Bin， belonging to the user Scott， are not dropped.C The user， Scott， is dropped， all the objects in the Scott’s schema are not placed in the Recycle Bin， and the objects in the Recycle Bin， belonging to the user， Scott， are not dropped.D The user， Scott， is dropped， all the objects in Scott’s schema are not placed in the Recycle Bin， and the objects in the Recycle Bin are dropped.
多选题In which two scenarios should you issue the following command？（） FLASHBACK TABLE SCOTT.EMP TO TIMESTAMP SYSTIMESTAP- INTERVAL ’15’ MINUTE；Awhen the schema of the user， SCOTT， was deleted by mistake 15 minutes agoBwhen the table EMP of the SCOTT schema was dropped by mistake 15 minutes agoCwhen some rows of the table， EMP， in the SCOTT schema were deleted by mistake 15 minutes agoDwhen some incorrect values were inserted in the EMP table in the user Scott’s schema during the last 15 minutesEnever， because FLASHBACK TABLE is not a valid command in Oracle 10g.
多选题You executed the following command to drop a user: DROP USER scott CASCADE; Which two statements regarding the above command are correct?（）AAll the objects of scott are moved to the Recycle Bin.BAny objects in the Recycle Bin belonging to scott are purged.CAll the objects owned by scott are permanently dropped from the database.DAll the objects of scott in the Recycle Bin must be purged before executing the DROP command.EAny objects in the Recycle Bin belonging to scott will not be affected by the above DROP command.
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You execute the following command toauditdatabase activities： SQLAUDITDROP ANY TABLE BY scott BY SESSION WHENEVER SUCCESSFUL； What is the effect of this command（）AOneauditrecord is created for every successful DROP TABLE command executed in the session ofSCOTT.BOneauditrecord is generated for the session when SCOTT grants the DROP ANY TABLE privilege toother users.COne audit record is created for the whole session if user SCOTT successfully drops one or more tablesin his session.DOne audit record is created for every session of any other user in which a table owned by SCOTT isdropped successfully.EOne audit record is created for every successful DROP TABLE command executed by any user to droptables owned by SCOTT.
单选题You issue the following code： EXEC DBMS_RESOURCE_MANAGER_PRIVS.GRANT_SWITCH_CONSUMER_GROUP （’SCOTT’ ’GRP1’， TRUE）； What will be the result of executing the above code？（）A The switch privilege will be granted to the user， Scott， for changing the consumer group to GRP1.B The switch privilege will be granted to the user， Scott， for changing the consumer group from GRP1 to any other group.C The code will not execute successfully because there is no GRANT_SWITCH_CONSUMER_GROUP procedure in the DBMS_RESOURCE_MANAGER_PRIVS package.DThe code will execute successfully but no privilege will be granted to the user， Scott.
单选题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？（）AOne audit record is created for the whole session if user SCOTT successfully drops one or more tables in his session.BOne audit record is created for every session when any user successfully drops a table owned by SCOTT.COne audit record is created for each successful DROP TABLE command executed by any user to drop tables owned by SCOTT.DOne audit record is generated for the session when SCOTT grants the DROP ANY TABLE privilege to other users in his session.EOne audit record is created for each successful DROP TABLE command executed in the session of SCOTT.
单选题User A executes the following command to drop a large table in your database：SQL DROP TABLE trans； While the drop table operation is in progress， user B executes the following command on the same table：SQL DELETE FROM trans WHERE tr_type=’SL’； Which statement is true regarding the DELETE command（）AIt fails to delete the records because the records are locked in SHARE mode.BIt deletes the rows successfully because the table is locked in SHARE modeCIt fails to delete the records because the table is locked in EXCLUSIVE mode.DIt deletes the rows successfully because the table is locked in SHARE ROW EXCLUSIVE mode.
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.
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 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？（）ALOCK TABLE emp IN SHARE MODE;BLOCK TABLE emp IN EXCLUSIVE MODE;CDELETE FROM emp WHERE job=’MANAGER’;DINSERT INTO emp（empno，ename） VALUES （1289，’Dick’）;ESELECT job 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， 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
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.