| SOURCE_DATABASE_NAME | VARCHAR2(4000) |  | Database name of source session | 
| SOURCE_INSTANCE_NAME | VARCHAR2(4000) |  | Instance name of source session | 
| SOURCE_INSTANCE_ID | VARCHAR2(4000) |  | Instance ID of source session | 
| SOURCE_INSTANCE_START_TIME | TIMESTAMP(6) WITH TIME ZONE |  | Instance start time of source session | 
| SEQUENCE# | NUMBER |  | Migration sequence number | 
| SOURCE_SID | NUMBER |  | Session ID of source session | 
| SOURCE_SERIAL# | NUMBER |  | Source serial number of source session | 
| SOURCE_STATE | VARCHAR2(24) |  | Migration state of source session | 
| CONNECT_STRING | VARCHAR2(4000) |  | Connect string specified for migration | 
| SOURCE_START_TIME | TIMESTAMP(6) WITH TIME ZONE |  | Start time for migration on source session | 
| COST | NUMBER |  | Estimate of migration cost | 
| FAILURE_REASON | VARCHAR2(34) |  | Reason for migration failure, if any | 
| SOURCE_END_TIME | TIMESTAMP(6) WITH TIME ZONE |  | End time for migration on source session | 
| ROUNDTRIPS | NUMBER |  | Number of client-server round trips during migration | 
| SOURCE_USER_NAME | VARCHAR2(30) | NOT NULL | User associated with the source session | 
| SOURCE_SCHEMA_NAME | VARCHAR2(30) | NOT NULL | Schema associated with the source session | 
| DESTINATION_DATABASE_NAME | VARCHAR2(4000) |  | Database name of the destination session |