DBA_LOGSTDBY_EVENTS

DBA_LOGSTDBY_EVENTS contains information about the activity of the logical standby database system. It can be used to determine the cause of failures that occur when applying redo logs.

Column	Datatype	NULL	Description
EVENT_TIME	DATE		Time the event was logged
CURRENT_SCN	NUMBER		Change vector SCN for the change. If a failure occurred, then examine this column to determine which archived log file contains the source of the failure (for example, an unsupported record).
COMMIT_SCN	NUMBER		SCN value on which the change was committed
XIDUSN	NUMBER		Transaction ID undo segment number
XIDSLT	NUMBER		Transaction ID slot number
XIDSQN	NUMBER		Transaction ID sequence number
EVENT	CLOB		Statement that was being processed when the failure occurred
STATUS_CODE	NUMBER		Status (or Oracle error code) belonging to the STATUS message
STATUS	VARCHAR2(2000)		Description of the current activity of the process or the reason why the apply operation stopped