V$LOGSTDBY_STATE

V$LOGSTDBY_STATE provides consolidated information from V$LOGSTDBY and V$LOGSTDBY_STATS about the running state of Logical Standby.

Column	Datatype	Description
`PRIMARY_DBID`	`NUMBER`	Database ID (DBID) of the primary database
`SESSION_ID`	`NUMBER`	LogMiner session ID allocated to SQL Apply.
`REALTIME_APPLY`	`VARCHAR2(64)`	`Y` indicates that SQL Apply is running in real-time apply mode. If a standby redo log is configured, SQL Apply applies changes as they are written to the standby redo log files. `N` indicates that SQL Apply applies changes as each archived redo log file is received.
`STATE`	`VARCHAR2(64)`	`INITIALIZING`: LogMiner session has been created and coordinator has attached to it `LOADING DICTIONARY`: SQL Apply is loading the LogMiner dictionary `WAITING ON GAP`: SQL Apply is waiting for a log file to be sent from the primary database `APPLYING`: SQL Apply is actively mining or applying transactions `WAITING FOR DICTIONARY LOGS`: SQL Apply is waiting for the archived logs containing the LogMiner dictionary to be shipped from the primary database `IDLE`: SQL Apply has applied all changes available at the logical standby, and is caught up with the primary database