dba_enabled_aggregations
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内容图文
DBA_ENABLED_AGGREGATIONS displays information about enabled on-demand statistic aggregation. Column Datatype NULL Description AGGREGATION_TYPE VARCHAR2(21) Type of the aggregation: CLIENT_ID SERVICE SERVICE_MODULE SERVICE_MODULE_ACTION PRI
DBA_ENABLED_AGGREGATIONS displays information about enabled on-demand statistic aggregation.
| Column | Datatype | NULL | Description |
|---|---|---|---|
| AGGREGATION_TYPE | VARCHAR2(21) | Type of the aggregation:
CLIENT_ID SERVICE SERVICE_MODULE SERVICE_MODULE_ACTION |
|
| PRIMARY_ID | VARCHAR2(64) | Primary qualifier (specific client identifier or service name) | |
| QUALIFIER_ID1 | VARCHAR2(48) | Secondary qualifier (specific module name) | |
| QUALIFIER_ID2 | VARCHAR2(32) | Additional qualifier (specific action name) |
通过DBA_ENABLED_AGGREGATIONS视图可以查询通过DBMS_MONITOR包开启的统计信息收集。通过dbms_monitor我们可以按照如下方式收集统计信息： 基于session client identfier收集基于service、module、action的组合收集 示例如下：
SQL> execute dbms_session.set_identifier('es');
PL/SQL 过程已成功完成。
SQL> exec dbms_monitor.client_id_stat_enable('es');
PL/SQL 过程已成功完成。
SQL> select aggregation_type from dba_enabled_aggregations;
AGGREGATION_TYPE
---------------------
CLIENT_ID
SQL> exec dbms_application_info.set_module(module_name=>'tm',action_name=>'ta');
PL/SQL 过程已成功完成。
SQL> select aggregation_type from dba_enabled_aggregations;
AGGREGATION_TYPE
---------------------
CLIENT_ID
SQL> exec dbms_monitor.serv_mod_act_stat_enable(service_name=>'easy');
BEGIN dbms_monitor.serv_mod_act_stat_enable(service_name=>'easy'); END;
*
第 1 行出现错误:
ORA-06550: 第 1 行, 第 7 列:
PLS-00306: 调用 'SERV_MOD_ACT_STAT_ENABLE' 时参数个数或类型错误
ORA-06550: 第 1 行, 第 7 列:
PL/SQL: Statement ignored
SQL> exec dbms_monitor.serv_mod_act_stat_enable(service_name=>'easy',module_name=>'tm');
PL/SQL 过程已成功完成。
SQL> select aggregation_type from dba_enabled_aggregations;
AGGREGATION_TYPE
---------------------
CLIENT_ID
SERVICE_MODULE
SQL> exec dbms_monitor.serv_mod_act_stat_enable(service_name=>'easy',module_name=>'tm',action_name=>'ta');
PL/SQL 过程已成功完成。
SQL> select aggregation_type from dba_enabled_aggregations;
AGGREGATION_TYPE
---------------------
CLIENT_ID
SERVICE_MODULE
SERVICE_MODULE_ACTION
查看统计信息： 视图：v$serv_mod_act_stats
SQL> l 1* select aggregation_type,service_name,module,action,stat_name,value from v$serv_mod_act_stats SQL> / AGGREGATION_TYPE SERVICE_NA MODULE ACTION STAT_NAME VALUE --------------------- ---------- ---------- -------------------- ------------------------------ ---------- SERVICE_MODULE easy tm user calls 0 SERVICE_MODULE easy tm DB time 0 SERVICE_MODULE easy tm DB CPU 0 SERVICE_MODULE easy tm parse count (total) 0 SERVICE_MODULE easy tm parse time elapsed 0 SERVICE_MODULE easy tm execute count 0 SERVICE_MODULE easy tm sql execute elapsed time 0 SERVICE_MODULE easy tm opened cursors cumulative 0 SERVICE_MODULE easy tm session logical reads 0 SERVICE_MODULE easy tm physical reads 0 SERVICE_MODULE easy tm physical writes 0 AGGREGATION_TYPE SERVICE_NA MODULE ACTION STAT_NAME VALUE --------------------- ---------- ---------- -------------------- ------------------------------ ---------- SERVICE_MODULE easy tm redo size 0 SERVICE_MODULE easy tm user commits 0 SERVICE_MODULE easy tm workarea executions - optimal 0 SERVICE_MODULE easy tm workarea executions - onepass 0 SERVICE_MODULE easy tm workarea executions - multipas 0 s SERVICE_MODULE easy tm session cursor cache hits 0 SERVICE_MODULE easy tm user rollbacks 0 SERVICE_MODULE easy tm db block changes 0 SERVICE_MODULE easy tm gc cr blocks received 0 AGGREGATION_TYPE SERVICE_NA MODULE ACTION STAT_NAME VALUE --------------------- ---------- ---------- -------------------- ------------------------------ ---------- SERVICE_MODULE easy tm gc cr block receive time 0 SERVICE_MODULE easy tm gc current blocks received 0 SERVICE_MODULE easy tm gc current block receive time 0 SERVICE_MODULE easy tm cluster wait time 0 SERVICE_MODULE easy tm concurrency wait time 0 SERVICE_MODULE easy tm application wait time 0 SERVICE_MODULE easy tm user I/O wait time 0 已选择27行。 SQL> l 1* select aggregation_type,service_name,module,action,stat_name,value from v$serv_mod_act_stats SQL> / AGGREGATION_TYPE SERVICE_NA MODULE ACTION STAT_NAME VALUE --------------------- ---------- ---------- -------------------- ------------------------------ ---------- SERVICE_MODULE_ACTION easy tm ta user calls 0 SERVICE_MODULE_ACTION easy tm ta DB time 0 SERVICE_MODULE_ACTION easy tm ta DB CPU 0 SERVICE_MODULE_ACTION easy tm ta parse count (total) 0 SERVICE_MODULE_ACTION easy tm ta parse time elapsed 0 SERVICE_MODULE_ACTION easy tm ta execute count 0 SERVICE_MODULE_ACTION easy tm ta sql execute elapsed time 0 SERVICE_MODULE_ACTION easy tm ta opened cursors cumulative 0 SERVICE_MODULE_ACTION easy tm ta session logical reads 0 SERVICE_MODULE_ACTION easy tm ta physical reads 0 SERVICE_MODULE_ACTION easy tm ta physical writes 0 AGGREGATION_TYPE SERVICE_NA MODULE ACTION STAT_NAME VALUE --------------------- ---------- ---------- -------------------- ------------------------------ ---------- SERVICE_MODULE_ACTION easy tm ta redo size 0 SERVICE_MODULE_ACTION easy tm ta user commits 0 SERVICE_MODULE_ACTION easy tm ta workarea executions - optimal 0 SERVICE_MODULE_ACTION easy tm ta workarea executions - onepass 0 SERVICE_MODULE_ACTION easy tm ta workarea executions - multipas 0 s SERVICE_MODULE_ACTION easy tm ta session cursor cache hits 0 SERVICE_MODULE_ACTION easy tm ta user rollbacks 0 SERVICE_MODULE_ACTION easy tm ta db block changes 0 SERVICE_MODULE_ACTION easy tm ta gc cr blocks received 0 AGGREGATION_TYPE SERVICE_NA MODULE ACTION STAT_NAME VALUE --------------------- ---------- ---------- -------------------- ------------------------------ ---------- SERVICE_MODULE_ACTION easy tm ta gc cr block receive time 0 SERVICE_MODULE_ACTION easy tm ta gc current blocks received 0 SERVICE_MODULE_ACTION easy tm ta gc current block receive time 0 SERVICE_MODULE_ACTION easy tm ta cluster wait time 0 SERVICE_MODULE_ACTION easy tm ta concurrency wait time 0 SERVICE_MODULE_ACTION easy tm ta application wait time 0 SERVICE_MODULE_ACTION easy tm ta user I/O wait time 0 SERVICE_MODULE easy tm user calls 0 SERVICE_MODULE easy tm DB time 0 SERVICE_MODULE easy tm DB CPU 0 SERVICE_MODULE easy tm parse count (total) 0 AGGREGATION_TYPE SERVICE_NA MODULE ACTION STAT_NAME VALUE --------------------- ---------- ---------- -------------------- ------------------------------ ---------- SERVICE_MODULE easy tm parse time elapsed 0 SERVICE_MODULE easy tm execute count 0 SERVICE_MODULE easy tm sql execute elapsed time 0 SERVICE_MODULE easy tm opened cursors cumulative 0 SERVICE_MODULE easy tm session logical reads 0 SERVICE_MODULE easy tm physical reads 0 SERVICE_MODULE easy tm physical writes 0 SERVICE_MODULE easy tm redo size 0 SERVICE_MODULE easy tm user commits 0 SERVICE_MODULE easy tm workarea executions - optimal 0 SERVICE_MODULE easy tm workarea executions - onepass 0 AGGREGATION_TYPE SERVICE_NA MODULE ACTION STAT_NAME VALUE --------------------- ---------- ---------- -------------------- ------------------------------ ---------- SERVICE_MODULE easy tm workarea executions - multipas 0 s SERVICE_MODULE easy tm session cursor cache hits 0 SERVICE_MODULE easy tm user rollbacks 0 SERVICE_MODULE easy tm db block changes 0 SERVICE_MODULE easy tm gc cr blocks received 0 SERVICE_MODULE easy tm gc cr block receive time 0 SERVICE_MODULE easy tm gc current blocks received 0 SERVICE_MODULE easy tm gc current block receive time 0 SERVICE_MODULE easy tm cluster wait time 0 AGGREGATION_TYPE SERVICE_NA MODULE ACTION STAT_NAME VALUE --------------------- ---------- ---------- -------------------- ------------------------------ ---------- SERVICE_MODULE easy tm concurrency wait time 0 SERVICE_MODULE easy tm application wait time 0 SERVICE_MODULE easy tm user I/O wait time 0 已选择54行。
视图：v$client_stats
SQL> l 1* select client_identifier,stat_name,value from v$client_stats SQL> / CLIENT_IDE STAT_NAME VALUE ---------- ------------------------------ ---------- es user calls 28 es DB time 45170 es DB CPU 20997 es parse count (total) 15 es parse time elapsed 13894 es execute count 14 es sql execute elapsed time 8309 es opened cursors cumulative 19 es session logical reads 35 es physical reads 0 es physical writes 0 CLIENT_IDE STAT_NAME VALUE ---------- ------------------------------ ---------- es redo size 1976 es user commits 0 es workarea executions - optimal 0 es workarea executions - onepass 0 es workarea executions - multipas 0 s es session cursor cache hits 6 es user rollbacks 0 es db block changes 12 es gc cr blocks received 0 CLIENT_IDE STAT_NAME VALUE ---------- ------------------------------ ---------- es gc cr block receive time 0 es gc current blocks received 0 es gc current block receive time 0 es cluster wait time 0 es concurrency wait time 0 es application wait time 0 es user I/O wait time 0 已选择27行。
注意：在service级别的统计信息总是开启的，例如
SQL> l
1* select aggregation_type from dba_enabled_aggregations
SQL> /
AGGREGATION_TYPE
---------------------
CLIENT_ID
SERVICE_MODULE
SERVICE_MODULE_ACTION
SQL> select * from v$service_stats;
SERVICE_NAME_HASH SERVICE_NA STAT_ID STAT_NAME VALUE
----------------- ---------- ---------- ------------------------------ ----------
3427055676 SYS$USERS 2666645286 logons cumulative 48
165959219 SYS$BACKGR 2666645286 logons cumulative 47
OUND
3271786180 easy 2666645286 logons cumulative 19
1671308587 jj 2666645286 logons cumulative 0
2349869997 pointXDB 2666645286 logons cumulative 0
3427055676 SYS$USERS 2882015696 user calls 244
......
3271786180 easy 3332107451 user I/O wait time 1756694
1671308587 jj 3332107451 user I/O wait time 0
2349869997 pointXDB 3332107451 user I/O wait time 0
已选择140行。内容总结
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