| SNAP_ID | NUMBER |  | Unique snapshot ID | 
| DBID | NUMBER |  | Database ID for the snapshot | 
| INSTANCE_NUMBER | NUMBER |  | Instance number for the snapshot | 
| INSTANCE | NUMBER |  | Instance from which the blocks are transferred | 
| CLASS | VARCHAR2(18) |  | Class of the cache block | 
| CR_BLOCK | NUMBER |  | CR block transfers not affected by remote processing delays | 
| CR_BUSY | NUMBER |  | Current block transfers affected by remote contention | 
| CR_CONGESTED | NUMBER |  | CR block transfers affected by remote system load | 
| CURRENT_BLOCK | NUMBER |  | Current block transfers not affected by remote processing delays | 
| CURRENT_BUSY | NUMBER |  | Current block transfers affected by remote contention | 
| CURRENT_CONGESTED | NUMBER |  | Current block transfers affected by remote system load | 
| LOST | NUMBER |  | The number of blocks that were sent by a particular instance but that never arrived in this instance | 
| CR_2HOP | NUMBER |  | The count of CR blocks which were received by this instance from a particular instance after a 2-way round-trip | 
| CR_3HOP | NUMBER |  | The count of CR blocks which were received by this instance from a particular instance after a 3-way round-trip | 
| CURRENT_2HOP | NUMBER |  | The count of current blocks which were received by this instance from a particular instance after a 2-way roundtrip | 
| CURRENT_3HOP | NUMBER |  | The count of current blocks which were received by this instance from a particular instance after a 3-way roundtrip | 
| CR_BLOCK_TIME | NUMBER |  | Total time waited for CR blocks from a particular instance (includes the other times) | 
| CR_BUSY_TIME | NUMBER |  | The time waited for CR blocks which were received by this instance from a particular instance and which were delayed by a log flushed on the sending instance | 
| CR_CONGESTED_TIME | NUMBER |  | The time waited for CR blocks which were received by this instance from a particular instance and which were delayed because LMS was busy | 
| CURRENT_BLOCK_TIME | NUMBER |  | Total time waited for CR blocks from a particular instance (includes the other times) | 
| CURRENT_BUSY_TIME | NUMBER |  | The time waited for current blocks which were received by this instance from a particular instance and which were delayed by a log flushed on the sending instance | 
| CURRENT_CONGESTED_TIME | NUMBER |  | The time waited for current blocks which were received by this instance from a particular instance and which were delayed because LMS was busy | 
| LOST_TIME | NUMBER |  | The time waited for blocks that were sent by a particular instance but that never arrived in this instance | 
| CR_2HOP_TIME | NUMBER |  | The time waited for CR blocks which were received by this instance from a particular instance after a 2-way round-trip | 
| CR_3HOP_TIME | NUMBER |  | The time waited for CR blocks which were received by this instance from a particular instance after a 3-way round-trip | 
| CURRENT_2HOP_TIME | NUMBER |  | The time waited for current blocks which were received by this instance from a particular instance after a 2-way roundtrip | 
| CURRENT_3HOP_TIME | NUMBER |  | The time waited for current blocks which were received by this instance from a particular instance after a 3-way roundtrip |