可以使用Hints对某个SQL开启实时监控

select/*+monitor*/ count(*) from scott.emp where sal>2000;


使用dbms_sqltune查看监控信息

set long 9999999

set longchunksize 9999999

set linesize 200

selectdbms_sqltune.report_sql_monitor from dual;


REPORT_SQL_MONITOR

---------------------------------------------------------------------------------------------------------------------------

SQL Monitoring Report


SQL Text

------------------------------

select /*+monitor*/count(*) from scott.emp where sal>2000


Global Information

------------------------------

Status :DONE (ALL ROWS)

Instance ID :1

Session :SYS (9:15084)

SQL ID :6k8qh0ubz4mnw

SQL Execution ID :16777216

Execution Started :05/27/2017 23:10:31

First Refresh Time :05/27/2017 23:10:31

Last Refresh Time :05/27/2017 23:10:31

Duration :.0003s

Module/Action :sqlplus.exe/-

Service :SYS$USERS

Program :sqlplus.exe

Fetch Calls :1


Global Stats

==================================================

| Elapsed | IO| Other | Fetch | Buffer |

| Time(s) | Waits(s) |Waits(s) | Calls | Gets |

==================================================

| 0.00 |0.00 | 0.00 | 1 |7 |

==================================================


SQL Plan MonitoringDetails (Plan Hash Value=2083865914)

==========================================================================================================================

| Id | Operation | Name |Rows | Cost | Time| Start | Execs | Rows| Activity | Activity Detail |

| | | | (Estim) | | Active(s) | Active | | (Actual) | (%)| (# samples) |

==========================================================================================================================

| 0 | SELECT STATEMENT || | |1 | +0 | 1 |1 | | |

| 1 |SORT AGGREGATE | |1 | | 1 |+0 | 1 | 1 | | |

| 2 |TABLE ACCESS FULL | EMP | 10 |3 | 1 | +0 |1 | 6 | | |

==========================================================================================================================


监控信息始终指向最后一次监控的SQL语句，这些信息将会在数据库重启后清除。