Users in your PROD database complain about the slow response of the transactions. While investigating the reason， you find that the transactions are waiting for the undo segments to be available， and undo retention has been set to zero. What would you do to overcome this problem？（）

单项选择题Thecustomerandordertablesareoftenusedinjoins，therebyresultingincomplexqueries.Youcreatedviewstosimplifythewritingofqueries.Theseviewsarestoredin（）.

A.user tables
B.view segment
C.table segment
D.data dictionary
E.object segment
F.performance tables

单项选择题You manually create an additional listener process，L1，for databases PROD，  PAYDB and FINDB. While starting up the listener process，you get the following error message： LSNRCTL> start l1  Starting  u01 app oracle product 10.1.0 db_1 bin tnslsnr： please wait...  TNSLSNR for Linux： Version 10.1.0.2.0 - Production  System parameter file is  u01 app oracle product 10.1.0 db_1 network admin listener.ora Log messages written to  u01 app oracle product 10.1.0 db_1 network log l1.log Error listening on： （ADDRESS=（PROTOCOL=TCP）（HOST=144.23.230.185）（port=8899））  TNS-12542： TNS：address already in use TNS-12560：  TNS：protocol adapter error TNS-00512： Address already in use  Linux Error： 98： Address already in use  Listener failed to start. See the error message（s） above...  What action would you take to overcome this error without disrupting any existing database communications？（）

A.stop and restart the listener process
B.set the TNS_ADMIN environmental variable
C.stop all running listener processes and restart the listener process
D.change the port number to an unused port number and restart the listener process
E.change the IP address to host machine name in the LISTENER.ORA file and restart the listener process

单项选择题Inyourdatabase，youmaybeforcedtoperformarecoveryusingtheRESETLOGSoptionduringwhichtheredologswouldberesettosequencenumber1.Youwanttoavoidtheoverwritingofoldlogfiles.Whicharchivedlogfilenameformatensuresthis？（）

A.%t_%s.dbf
B.arch_%t.arc
C.arch_%d.arc
D.arch_%t_%d.arc
E.arch_%d_%s_.dbf
F.arch_%t_%s_%r.arc

单项选择题Your database is running in the ARCHIVELOG mode. You placed a tablespace， tbs_1， offline with the immediate option. Which statement is correct in this scenario？ （）

A.The operation would fail if tbs_1 were a read-only tablespace.
B.The operation would fail if tbs_1 were a read/write tablespace.
C.The operation would fail if tbs_1 were the default tablespace for the database.
D.If the above operation were successful， media recovery would be required to bring the tablespace online.
E.If the above operation were successful， instance recovery would be required to bring the tablespace online.

多项选择题The following are the details of your database：Instance name：test  Host name ： tech1.us.oracle.com IP address：145.33.230.186 Enterprise Manager Console HTTP Port number：5500  You started the database instance and you want to manage your database remotely with Enterprise Manager through a Web browser.  Which two URLs would you use to access the Database Control？（）

A.http：//145.33.230.186：5500/em
B.http：//www.145.33.230.186：5500/em
C.http：//tech1.us.oracle.com：5500/em
D.http：//test.145.33.230.186：5500/em
E.http：//test.tech1.us.oracle.com：5500
F.http：//www.tech1.us.oracle.com：5500/em
G.http：//test.tech1.us.oracle.com：5500/em