单项选择题
What is true about version-enabled tables？（）
A.The unit of versioning is the schema.
B.It is possible to version enable a table pertaining to SYS.
C.There are as many segments as versions for the same base table.
D.It is possible to create workspaces if there is no version-enabled table in the database.
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多项选择题
Which three table transformations can be done using online redefinition of tables？（）
A.A
B.B
C.C
D.D
E.E -
单项选择题
You have just run this syntax to start the listener from the Listener Control utility： LSNRCTL>START Starting /mstgelai/oracle/bin/tnslsnr： please wait… System parameter file is /u01/oracle/network/admin/listener.ora Log messages written to /u01/oracle/network/log/listener.log Listening on： （DESCRIPTION=（ADDRESS=（PROTOCOL=tcp）（HOST=stc-sun01-server）（PORT=1521））） Connecting to… The command completed successfully What is the name of the Listener you started？（）
A.TNSLSNR
B.LISTENER
C.LOCAL_LISTENER
D.DEFAULT_LSRN -
单项选择题
In this scenario， assume that you archive logs 101 to 104 to two archiving destinations， /log1 and /log2. The control file contains archived log records as follows： Sequence Filename 101 /log1/log_1_101.arc 101 /log2/log_1_101.arc 102 /log1/log_1_102.arc 102 /log2/log_1_102.arc 103 /log1/log_1_103.arc 103 /log2/log_1_103.arc 104 /log1/log_1_104.arc 104 /log2/log_1_104.arc You accidentally delete logs 102 and 104 from log 1. You run this command： BACKUP ARCHIVELOG FROM SEQUENCE 101 UNTIL SEQUENCE 105； What happens？（）
A.A
B.B
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D.D
