SQL> set lines 200
SQL> select * from v$version where rownum=1;

BANNER                                                                               CON_ID
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Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production              0

SQL> 

Monitorable (Read-Only) Properties

DGMGRL> show database orcl 'LogXptStatus'  ##redo日志传输
LOG TRANSPORT STATUS
PRIMARY_INSTANCE_NAME   STANDBY_DATABASE_NAME    STATUS           
                orcl               orcldg                      
                orcl              orcldg2                      
DGMGRL> 
DGMGRL> show database orcl 'InconsistentLogXptProps'   ##不一致的redo日志传输属性(primary)
INCONSISTENT LOG TRANSPORT PROPERTIES
   INSTANCE_NAME         STANDBY_NAME        PROPERTY_NAME         MEMORY_VALUE         BROKER_VALUE 

DGMGRL> show database orcl 'InconsistentProperties';  ##不一致的数据库属性
INCONSISTENT PROPERTIES
   INSTANCE_NAME        PROPERTY_NAME         MEMORY_VALUE         SPFILE_VALUE         BROKER_VALUE 

DGMGRL> 

DGMGRL> show database orcl 'StatusReport';  ##报错
STATUS REPORT
       INSTANCE_NAME   SEVERITY ERROR_TEXT

DGMGRL> 

DGMGRL> show database orcl TopWaitEvents  ##等待事件
TOP SYSTEM WAIT EVENTS
               Event            Wait Time 
   rdbms ipc message             16769701 
    class slave wait              2573282 
        PX Idle Wait              2507538 
Space Manager: slave idle wait              1435970 
      DIAG idle wait              1260277 

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