Which  statements are true regarding a tablespace（）

多项选择题Whichstatementsaretrueregardinglisteners（）

A.Listeners use only the TCP/IP protocol.
B.Multiple listener processes can run simultaneously on a host.
C.Multiple database instances can be registered with a single listener.
D.The listener-related errors can be traced only at the administrative level.
E.Only one database instance can be registered with a single listener at any time

多项选择题You are managing an Oracle Database 11g database. You configured the database to run in ARCHIVELOGmode.  Which two statements are true in this scenario（）

A.You must shut down the database instance to perform the backups.
B.You must configure the Flash Recovery Area （FRA） for the database.
C.You can perform complete database backups without closing the database.
D.All the previous closed database backups including control files become invalid after you configure thedatabase to ARCHIVELOG mode.

多项选择题WhichstatementsaretrueaboutlogicalstructuresoftheOracledatabase（）

A.Each segment contains one or more extents.
B.Multiple tablespaces can share a single data file
C.A data block is the smallest unit of input/output （I/O） in data files.
D.It is possible to have tablespaces of different block sizes in a database.
E.Each data block in the database always corresponds to one operating system block

多项选择题Whichstatementsregardingtheserverparameterfile（SPFILE）aretrue（）

A.An SPFILE is a binary file.
B.An SPFILE cannot reside on a client.
C.An SPFILE cannot contain static parameters.
D.An SPFILE can store changes persistently across instance restarts.
E.An SPFILE can be read by the database server， but it is not written to by the server.
F.An SPFILE must be created manually， before creating a database， even if you use the DatabaseConfiguration Assistant （DBCA） to create the database

单项选择题Which statement is true about loading data using the conventional path of SQL*Loader（）

A.Redo is not generated while performing conventional path loads.
B.Only PRIMARY KEY， UNIQUE KEY， and NOT NULL constraints are checked.
C.No exclusive locks are acquired when the conventional path loads are performed.
D.Instead of performing transactions， SQL*Loader directly writes data blocks to the data files.
E.INSERT triggers are disabled before the conventional path load and reenabled at the end of the load