[单选]
Examine the following set of RMAN commands:

Which statement is true when the RMAN RUN block Is executed?（）

A . The execution of the script fails because multiple channels cannot coexist.
B . The script is executed and both the channels are used for the script execution.
C . The new channel, CHI, is Ignored because a channel has been configured already.
D . ration parameter DC1 is overridden because a new channel is allocated in RMAN RUN block.

In which situation is the UNDO_RETENTION parameter be ignored， even if it is set to a value（） When the data file of the undo tablespace is autoextensible。 When there are more than one undo tablespaces available in the database。 When the undo tablespace is of a fixed size and retention guarantee is not enabled。 When the undo tablespace is autoextensible and retention guarantee is not enabled。申请调整概算的项目，国家发展改革委原则上先商请审计机关进行审计，待审计结束后，再视具体情况进行概算调整。 You need to ensure that database schema changes in branch offices result in the proper notifications. What should you do?（） Install Notification Services on all branch office servers， and configure Notification Services to use a local notifications database.。 Specify that all SQL Server log files must be archived and sent by e-mail to the main office. 。 Implement DML triggers that use Database Mail to send an e-mail message about the DML activity.。 Implement DDL triggers that use Database Mail to send an e-mail message about the DDL activity.。偏利共栖恩德以及上海电气风机下列哪个部件是振动测试模块（）。 WP2035。 WP3045。 WP4084。

Examine the following set of RMAN commands:

Which statement is true when the RMAN RUN block Is executed?（）

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[单选] Examine the following set of RMAN commands: Which statement is true when the RMAN RUN block Is executed?（）

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[单选]
Examine the following set of RMAN commands:

Which statement is true when the RMAN RUN block Is executed?（）