Oracle AWR 报告脚本：SQL ordered by Elapsed Time

以下是 Oracle AWR 报告中，SQL ordered by Elapsed Time 部分的计算语句：

/****************************************************************************************SQL ordered by Elapsed Time		Resources reported for PL/SQL code includes the resources used by all SQL statements called by the code. 		% Total DB Time is the Elapsed Time of the SQL statement divided into the Total Database Time multiplied by 100 		%Total - Elapsed Time as a percentage of Total DB time 		%CPU - CPU Time as a percentage of Elapsed Time 		%IO - User I/O Time as a percentage of Elapsed Time 		Captured SQL account for 75.8% of Total DB Time (s): 214,223 		Captured PL/SQL account for 0.5% of Total DB Time (s): 214,223 ****************************************************************************************/select dbid,       db_name,       instance_number,       inst_name,       begin_snap_id,       end_snap_id,       elapsed,       (SELECT  e.VALUE-b.value as diff_value          FROM DBA_HIST_SYS_TIME_MODEL B,               DBA_HIST_SYS_TIME_MODEL E          WHERE e.dbid = b.dbid            and e.instance_number = b.instance_number            and e.STAT_ID = b.STAT_ID            and B.DBID            = base_info.dbid            AND B.INSTANCE_NUMBER = base_info.instance_number            AND B.SNAP_ID         = base_info.begin_snap_id            AND E.SNAP_ID         = base_info.end_snap_id            AND B.STAT_NAME       = 'DB time'         ) as db_time,       (SELECT sum(E.VALUE)-sum(B.VALUE) as STAT_TXN            FROM DBA_HIST_SYSSTAT B,                 DBA_HIST_SYSSTAT E           WHERE b.dbid          = e.dbid            and b.instance_number = e.instance_number            and b.STAT_ID         = e.STAT_ID           AND E.DBID            = base_info.dbid           and e.instance_number = base_info.instance_number           and b.snap_id         = base_info.begin_snap_id           and e.snap_id          = base_info.end_snap_id            AND e.STAT_NAME in ('user rollbacks','user commits')         ) as transaction_count  from (with db_info as (select d.dbid            dbid,                                d.name            db_name,                                i.instance_number instance_number,                                i.instance_name   inst_name                           from v$database d, v$instance i),          snap_info as (select c.*,                              EXTRACT(DAY FROM c.max_end_interval_time - c.min_end_interval_time) * 86400                               + EXTRACT(HOUR FROM c.max_end_interval_time - c.min_end_interval_time) * 3600                               + EXTRACT(MINUTE FROM c.max_end_interval_time - c.min_end_interval_time) * 60                               + EXTRACT(SECOND FROM c.max_end_interval_time - c.min_end_interval_time) ELAPSED                         from (select min(snap_id) begin_snap_id,                                      max(snap_id) end_snap_id,                                      min(END_INTERVAL_TIME) as  min_end_interval_time,                                      max(END_INTERVAL_TIME) as max_end_interval_time                                 from dba_hist_snapshot sn                                where sn.begin_interval_time >= trunc(sysdate) - 1                                  and sn.begin_interval_time < sysdate) c                        )               select * from db_info, snap_info) base_info;       select *  from (select to_char(nvl((sqt.elap / 1000000), to_number(null)),'9,999,990') as "Elapsed Time (s)",  						 to_char(nvl((sqt.cput / 1000000), to_number(null)),'9,999,990') as "CPU Time (s)",  						 to_char(sqt.exec,'999,999,999') as "Executions",  						 to_char(decode(sqt.exec,0, to_number(null),(sqt.elap / sqt.exec / 1000000)),'9999990.0') as "Elapsed Time per Exec (s)",--10g中用 Elap per Exec (s) 表示               to_char((100 * (sqt.elap / &db_time )),9990.0)  as "% Total DB Time",--11g中的"%Total%"               decode(sqt.elap, 0, to_number(null), (100 * (sqt.cput / sqt.elap))) as "%CPU",               decode(sqt.elap, 0, to_number(null), (100 * (sqt.iowt / sqt.elap))) as "%IO",               sqt.sql_id as "SQL Id",               decode(sqt.module,null, null, 'Module: ' || sqt.module) as "SQL Module",               nvl(dbms_lob.substr(st.sql_text,1400,1), to_clob('** SQL Text Not Available **')) as  "SQL Text" --norm_val 直接执行时可去掉dbms_lob.substr()          from (select sql_id, 	                     max(module) module,	                     sum(elapsed_time_delta) elap,	                     sum(cpu_time_delta)     cput,	                     sum(executions_delta)   exec,	                     sum(iowait_delta)       iowt                  from dba_hist_sqlstat                 where /*dbid = &dbid*/                    instance_number = &instance_number                   and &begin_snap_id < snap_id                   and snap_id <= &end_snap_id                 group by sql_id                ) sqt,               dba_hist_sqltext st         where st.sql_id(+) = sqt.sql_id           /*and st.dbid(+) = 3929621523*/         order by nvl(sqt.elap, -1) desc, sqt.sql_id) where rownum < 65   and (rownum <= 10 or "% Total DB Time" > 1.0);