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概念
This feature enables command scripts to be executed through the Oracle Data Guard broker DGMGRL command-line interface; much like in SQL*Plus. DGMGRL commands, SQL commands using the broker SQL command, and operating system commands using the new HOST (or !) capability can be put into a file and executed on the DGMGRL command line.
该特性使命令脚本可以通过Oracle Data Guard broker DGMGRL命令行界面执行;就像在SQL*Plus。DGMGRL命令、使用代理SQL命令的SQL命令，以及使用新的主机(或!)功能的操作系统命令可以放入文件中，并在DGMGRL命令行上执行。
This feature enables customers who use the standard interface to Oracle Data Guard (DGMGRL) in their broker configurations to use scripts for Oracle Data Guard operations.
该特性使使用标准接口的客户可以在其代理配置中使用Oracle Data Guard(DGMGRL)，从而为Oracle数据保护操作使用脚本。实验
1）@命令允许执行存储在脚本文件中的DGMGRL命令，脚步里的命令是能在DGMGRL命令行执行的脚步： 详细更多可执行命令可参考官方文档：
http://docs.oracle.com/database/122/DGBKR/oracle-data-guard-broker-commands.htm#DGBKR3668
[[email protected] u01]$ dgmgrl sys/oracle@cndba
DGMGRL for Linux: Release 12.2.0.1.0 - Production on Wed Aug 16 14:44:15 2017
Copyright (c) 1982, 2017, Oracle and/or its affiliates. All rights reserved.
Welcome to DGMGRL, type "help" for information.
Connected to "pdbcndba_p"
Connected as SYSDBA.
DGMGRL> @/u01/test.sql
Configuration - dg_cndba
Protection Mode: MaxPerformance
Members:
pdbcndba_p - Primary database
pdbcndba_s - Physical standby database
Fast-Start Failover: DISABLED
Configuration Status:
SUCCESS (status updated 51 seconds ago)
2）使用DGMGRL /(slash)命令重复在命令提示符中输入的最后一个命令。 [[email protected] u01]$ dgmgrl sys/oracle@cndba
DGMGRL for Linux: Release 12.2.0.1.0 - Production on Wed Aug 16 15:03:27 2017
Copyright (c) 1982, 2017, Oracle and/or its affiliates. All rights reserved.
Welcome to DGMGRL, type "help" for information.
Connected to "pdbcndba_p"
Connected as SYSDBA.
DGMGRL> SHOW CONFIGURATION;
Configuration - dg_cndba
Protection Mode: MaxPerformance
Members:
pdbcndba_p - Primary database
pdbcndba_s - Physical standby database
Fast-Start Failover: DISABLED
Configuration Status:
SUCCESS (status updated 39 seconds ago)
DGMGRL> /
Configuration - dg_cndba
Protection Mode: MaxPerformance
Members:
pdbcndba_p - Primary database
pdbcndba_s - Physical standby database
Fast-Start Failover: DISABLED
Configuration Status:
SUCCESS (status updated 40 seconds ago)
3) DGMGRL CONNECT命令将您连接到数据库或far sync instance，该实例是数据保护代理配置的成员。
[[email protected] u01]$ dgmgrl sys/oracle
DGMGRL for Linux: Release 12.2.0.1.0 - Production on Wed Aug 16 15:07:22 2017
Copyright (c) 1982, 2017, Oracle and/or its affiliates. All rights reserved.
Welcome to DGMGRL, type "help" for information.
Connected to "pdbcndba_p"
Connected as SYSDG.
DGMGRL> connect sys/oracle
Connected to "pdbcndba_p"
Connected as SYSDG.
DGMGRL> connect sys/[email protected]
Connected to "pdbcndba_p"
Connected as SYSDBA.
4) 执行 show 和VALIDATE命令
[[email protected] u01]$ dgmgrl sys/oracle
DGMGRL for Linux: Release 12.2.0.1.0 - Production on Wed Aug 16 15:07:22 2017
Copyright (c) 1982, 2017, Oracle and/or its affiliates. All rights reserved.
Welcome to DGMGRL, type "help" for information.
Connected to "pdbcndba_p"
Connected as SYSDG.
DGMGRL> show database pdbcndba_p
Database - pdbcndba_p
Role: PRIMARY
Intended State: TRANSPORT-ON
Instance(s):
cndba
Database Status:
SUCCESS
DGMGRL> VALIDATE DATABASE pdbcndba_p
Database Role: Primary database
Ready for Switchover: Yes
Flashback Database Status:
pdbcndba_p: Off
Managed by Clusterware:
pdbcndba_p: NO
Warning: Ensure primary database's StaticConnectIdentifier property
is configured properly so that the primary database can be restarted
by DGMGRL after switchover参考链接：