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Oracle® Database Reference 10g Release 2 (10.2) Part Number B14237-02 |
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# V$SQL_PLAN_STATISTICS

`V$SQL_PLAN_STATISTICS` provides execution statistics at the row source level for each child cursor.

Column | Datatype | Description
--- | --- | ---
`ADDRESS` | `RAW(4 | 8)` | Address of the handle to the parent for this cursor
`HASH_VALUE` | `NUMBER` | Hash value of the parent statement in the library cache. The two columns `ADDRESS` and `HASH_VALUE` can be used to join with `V$SQLAREA` to locate the parent cursor.
`SQL_ID` | `VARCHAR2(13)` | SQL identifier of the parent statement in the library cache
`PLAN_HASH_VALUE` | `NUMBER` | Numerical representation of the SQL plan for this cursor. Comparing one `PLAN_HASH_VALUE` to another easily identifies whether or not two plans are the same (rather than comparing the two plans line by line)
`CHILD_NUMBER` | `NUMBER` | Number of the child cursor that uses this work area. The columns `ADDRESS`, `HASH_VALUE`, and `CHILD_NUMBER` can be used to join with `V$SQL` to locate the child cursor using this area.
`OPERATION_ID` | `NUMBER` | A number assigned to each step in the execution plan
`EXECUTIONS` | `NUMBER` | Number of times this cursor has been executed
`LAST_STARTS` | `NUMBER` | Number of times this operation has been started, during the last execution
`STARTS` | `NUMBER` | Number of times this operation has been started, accumulated over the past executions
`LAST_OUTPUT_ROWS` | `NUMBER` | Number of rows produced by the row source, during the last execution
`OUTPUT_ROWS` | `NUMBER` | Number of rows produced by the row source, accumulated over the past executions
`LAST_CR_BUFFER_GETS` | `NUMBER` | Number of buffers retrieved in consistent mode, during the last execution. Buffers are usually retrieved in consistent mode for queries.
`CR_BUFFER_GETS` | `NUMBER` | Number of buffers retrieved in consistent mode, accumulated over the past executions. Buffers are usually retrieved in consistent mode for queries.
`LAST_CU_BUFFER_GETS` | `NUMBER` | Number of buffers retrieved in current mode, during the last execution. Buffers are retrieved in current mode for statements such as `INSERT`, `UPDATE`, and `DELETE`.
`CU_BUFFER_GETS` | `NUMBER` | Number of buffers retrieved in current mode, accumulated over the past executions. Buffers are retrieved in current mode for statements such as `INSERT`, `UPDATE`, and `DELETE`.
`LAST_DISK_READS` | `NUMBER` | Number of physical disk reads performed by the operation, during the last execution
`DISK_READS` | `NUMBER` | Number of physical disk reads performed by the operation, accumulated over the past executions
`LAST_DISK_WRITES` | `NUMBER` | Number of physical disk writes performed by the operation, during the last execution
`DISK_WRITES` | `NUMBER` | Number of physical disk writes performed by the operation, accumulated over the past executions
`LAST_ELAPSED_TIME` | `NUMBER` | Elapsed time (in microseconds) corresponding to this operation, during the last execution
`ELAPSED_TIME` | `NUMBER` | Elapsed time (in microseconds) corresponding to this operation, accumulated over the past executions