大家在做性能问题诊断的时候,awr是不可或缺的工具,使用?/rdbms/admin/awrrpt.sql可能大家使用的多了,可能有时候感觉输入参数还
大家在做性能问题诊断的时候,awr是不可或缺的工具,使用?/rdbms/admin/awrrpt.sql可能大家使用的多了,可能有时候感觉输入参数还是有些太繁琐了。一边复制,一边得到一个快照列表查看,其实还是不太方便。
比如我想查看某一天的8点到9点的快照,生成一个awr报告,那么可能得算一下大概需要多少天的快照,然后从一个冗长的快照列表中去一个一个复制,还是有些繁琐的。自己在生成awr的过程中总是感觉有些不太方便,今天下决心自己定制了一把。
首先解决快照列表的问题。一般我们需要得到如下的一个列表。
Instance DB Name Snap Id Snap Started Level
------------ ------------ --------- ------------------ -----
TEST01 TEST01 1274 19 Oct 2014 22:00 1
1275 19 Oct 2014 23:00 1
1276 20 Oct 2014 00:00 1
1277 20 Oct 2014 01:00 1
1278 20 Oct 2014 02:00 1
我使用了如下的脚本做了定制,比如我需要两天以前的,那天是10月19号,需要得到3点到9点的快照,那么我就直接可以使用脚本得到一个快照的简单列表。
输出的结果如下。前后各宽裕一个小时。这样我就简单就可以选择哪些快照是我需要的。随时查看。
Current Instance
~~~~~~~~~~~~~~~~
DBID DB_NAME INST_NUM INST_NAME
---------- --------- ---------- ----------------
3645037571 TEST01 1 TEST01
DB_NAME SNAP_ID SNAPDAT LVL
--------- ---------- -------------------------- ----------
TEST01 1262 19 Oct 2014 02:00 1
1263 19 Oct 2014 03:00 1
1264 19 Oct 2014 04:00 1
1265 19 Oct 2014 05:00 1
1266 19 Oct 2014 06:00 1
1267 19 Oct 2014 07:00 1
1268 19 Oct 2014 08:00 1
1269 19 Oct 2014 09:00 1
8 rows selected.
脚本内容如下:
sqlplus -s $DB_CONN_STR@$SH_DB_SID break on db_name
set pages 50
set linesize 100
prompt
prompt Current Instance
prompt ~~~~~~~~~~~~~~~~
select d.dbid dbid
, d.name db_name
, i.instance_number inst_num
, i.instance_name inst_name
from v\$database d,
v\$instance i;
select
di.db_name db_name
, s.snap_id snap_id
, to_char(s.end_interval_time,'dd Mon YYYY HH24:mi') snapdat
, s.snap_level lvl
from dba_hist_snapshot s
, dba_hist_database_instance di
where
( di.dbid,di.instance_number) in
(select d.dbid dbid
, i.instance_number inst_num
from v\$database d,
v\$instance i)
and di.dbid = s.dbid
and di.instance_number = s.instance_number
and di.startup_time = s.startup_time
and to_char(END_INTERVAL_TIME,'yyyymmdd')='$1'
and EXTRACT(HOUR FROM END_INTERVAL_TIME) between $2-1 and $3+1
order by db_name, instance_name, snap_id;
EOF

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