ORACLE RESOURCE MANAGER（资源管理器）
| Consumer Group | Level 1 | Level 2 | Level 3 |
|---|---|---|---|
SYS_GROUP |
100% | - | - |
| mailgrp | - | 80% | - |
| mgrgrp | - | 20% | - |
OTHER_GROUPS |
- | - | 100% |
SQL> select * from v$version;
BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE 10.2.0.1.0 Production
TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
SQL> --1.创建简单资源计划
SQL> BEGIN
2 DBMS_RESOURCE_MANAGER.CREATE_SIMPLE_PLAN(SIMPLE_PLAN => 'simple_plan1',
3 CONSUMER_GROUP1 => 'mailgrp', GROUP1_CPU => 80,
4 CONSUMER_GROUP2 => 'mgrgrp', GROUP2_CPU => 20);
5 END;
6 /
PL/SQL 过程已成功完成。
SQL> --2.为组和用户指定映射规则
SQL> BEGIN
2 DBMS_RESOURCE_MANAGER.CREATE_PENDING_AREA();
3 DBMS_RESOURCE_MANAGER.SET_CONSUMER_GROUP_MAPPING
4 (DBMS_RESOURCE_MANAGER.ORACLE_USER, 'mail', 'mailgrp');
5 DBMS_RESOURCE_MANAGER.SET_CONSUMER_GROUP_MAPPING
6 (DBMS_RESOURCE_MANAGER.ORACLE_USER, 'mgr', 'mgrgrp');
7 END;
8 /
PL/SQL 过程已成功完成。
SQL> --3.提交变更
SQL> BEGIN
2 DBMS_RESOURCE_MANAGER.SUBMIT_PENDING_AREA();
3 END;
4 /
PL/SQL 过程已成功完成。
SQL> set linesize 200
SQL> COL PLAN FOR A20;
SQL> COL CPU_METHOD FOR A20;
SQL> COL STATUS FOR A10;
SQL> COL MANDATORY FOR A10;
SQL> COL COMMENTS FOR A50;
SQL> SELECT T.PLAN,T.CPU_METHOD,T.STATUS,T.MANDATORY,T.COMMENTS FROM DBA_RSRC_PLANS T;
PLAN CPU_METHOD STATUS MANDATORY COMMENTS
-------------------- -------------------- ---------- ---------- --------------------------------------------------
SIMPLE_PLAN1 EMPHASIS NO Simple plan
INTERNAL_PLAN EMPHASIS YES Default Plan
INTERNAL_QUIESCE EMPHASIS YES Plan to internally quiesce system
SYSTEM_PLAN EMPHASIS NO Plan to give system sessions priority
SQL> COL PLAN FOR A20;
SQL> COL GROUP_OR_SUBPLAN FOR A20;
SQL> COL TYPE FOR A20;
SQL> COL CPU_P1 FOR 99999
SQL> COL CPU_P2 FOR 99999
SQL> COL CPU_P3 FOR 99999
SQL> COL MANDATORY FOR A10;
SQL> COL COMMENTS FOR A50;
SQL> SELECT T.PLAN,T.GROUP_OR_SUBPLAN,T.TYPE,T.CPU_P1,T.CPU_P2,T.CPU_P3 ,T.MANDATORY,T.COMMENTS
2 FROM DBA_RSRC_PLAN_DIRECTIVES T WHERE T.PLAN='SIMPLE_PLAN1';
PLAN GROUP_OR_SUBPLAN TYPE CPU_P1 CPU_P2 CPU_P3 MANDATORY COMMENTS
-------------------- -------------------- -------------------- ------ ------ ------ ---------- --------------------------
SIMPLE_PLAN1 MAILGRP CONSUMER_GROUP 0 80 0 NO Level 2 Group 1
SIMPLE_PLAN1 SYS_GROUP CONSUMER_GROUP 100 0 0 NO SYS Level 1
SIMPLE_PLAN1 OTHER_GROUPS CONSUMER_GROUP 0 0 100 NO OTHER_GROUPS Level 3
SIMPLE_PLAN1 MGRGRP CONSUMER_GROUP 0 20 0 NO Level 2 Group 2
SQL> COL ATTRIBUTE FOR A20
SQL> COL VALUE FOR A20
SQL> COL CONSUMER_GROUP FOR A20
SQL> COL STATUS FOR A20
SQL> SELECT * FROM DBA_RSRC_GROUP_MAPPINGS;
ATTRIBUTE VALUE CONSUMER_GROUP STATUS
-------------------- -------------------- -------------------- --------------------
ORACLE_USER MAIL MAILGRP
ORACLE_USER MGR MGRGRP
ORACLE_USER SYS SYS_GROUP
ORACLE_USER SYSTEM SYS_GROUP
SQL> COL CONSUMER_GROUP FOR A25
SQL> COL CPU_METHOD FOR A20
SQL> COL STATUS FOR A10
SQL> COL MANDATORY FOR A10
SQL> COL COMMENTS FOR A50
SQL> SELECT * FROM DBA_RSRC_CONSUMER_GROUPS;
CONSUMER_GROUP CPU_METHOD COMMENTS STATUS MANDATORY
------------------------- -------------------- -------------------------------------------------- ---------- ----------
MAILGRP ROUND-ROBIN Level 2 Group 1 NO
MGRGRP ROUND-ROBIN Level 2 Group 2 NO
OTHER_GROUPS ROUND-ROBIN consumer group for users not included in any group YES
in the active top-plan
DEFAULT_CONSUMER_GROUP ROUND-ROBIN consumer group for users not assigned to any group YES
SYS_GROUP ROUND-ROBIN Group of system sessions YES
LOW_GROUP ROUND-ROBIN Group of low priority sessions NO
AUTO_TASK_CONSUMER_GROUP ROUND-ROBIN System maintenance task consumer group NO
已选择7行。
SQL> --4.开启simple_plan1资源计划
SQL> ALTER SYSTEM SET RESOURCE_MANAGER_PLAN='SIMPLE_PLAN1';
系统已更改。
SQL> --访问该视图查看活动的资源计划
SQL> SELECT * FROM V$RSRC_PLAN;
ID NAME IS_TO
---------- -------------------------------- -----
66146 SIMPLE_PLAN1 TRUE
SQL> --这个时候INITIAL_RSRC_CONSUMER_GROUP显示了初始的组，但实际上并不会被应用，必须赋权才行
SQL> SELECT T.USERNAME,T.INITIAL_RSRC_CONSUMER_GROUP FROM DBA_USERS T
2 WHERE T.USERNAME IN('MAIL','MGR');
USERNAME INITIAL_RSRC_CONSUMER_GROUP
------------------------------ ------------------------------
MGR MGRGRP
MAIL MAILGRP
SQL> SELECT T.SID,T.SERIAL#,T.USERNAME,T.RESOURCE_CONSUMER_GROUP FROM V$SESSION T
2 WHERE T.USERNAME IN('MAIL','MGR');
SID SERIAL# USERNAME RESOURCE_CONSUMER_GROUP
---------- ---------- ------------------------------ --------------------------------
133 5 MGR OTHER_GROUPS
135 32 MGR OTHER_GROUPS
SQL> --5.为指定用户赋于切换到指定组的权限，使该用户可以使用组
SQL> BEGIN
2 DBMS_RESOURCE_MANAGER_PRIVS.GRANT_SWITCH_CONSUMER_GROUP ('mail', 'mailgrp', TRUE);
3 DBMS_RESOURCE_MANAGER_PRIVS.GRANT_SWITCH_CONSUMER_GROUP ('mgr', 'mgrgrp', TRUE);
4 END;
5 /
PL/SQL 过程已成功完成。
SQL> --6.在其它会话中，以MAIL用户登录，由以下输出可知，MAILGRP组已被应用。
SQL> SELECT T.SID,T.SERIAL#,T.USERNAME,T.RESOURCE_CONSUMER_GROUP FROM V$SESSION T
2 WHERE T.USERNAME IN('MAIL','MGR');
SID SERIAL# USERNAME RESOURCE_CONSUMER_GROUP
---------- ---------- ------------------------------ --------------------------------
133 5 MGR OTHER_GROUPS
135 32 MGR OTHER_GROUPS
137 3 MAIL MAILGRP
SQL> SELECT T.SID,T.SERIAL#,T.USERNAME,T.RESOURCE_CONSUMER_GROUP FROM V$SESSION T
2 WHERE T.USERNAME IN('MAIL','MGR');
SID SERIAL# USERNAME RESOURCE_CONSUMER_GROUP
---------- ---------- ------------------------------ --------------------------------
133 5 MGR OTHER_GROUPS
135 32 MGR OTHER_GROUPS
137 3 MAIL MAILGRP
140 56 MGR MGRGRP
DBA_RSRC_CONSUMER_GROUP_PRIVS
|
which they have been granted. groups granted to the user. |
DBA_RSRC_CONSUMER_GROUPS |
Lists all resource consumer groups that exist in the database. |
DBA_RSRC_MANAGER_SYSTEM_PRIVS
|
Resource Manager system privileges. granted system privileges for the |
DBA_RSRC_PLAN_DIRECTIVES |
Lists all resource plan directives that exist in the database. |
DBA_RSRC_PLANS |
Lists all resource plans that exist in the database. |
DBA_RSRC_GROUP_MAPPINGS |
Lists all of the various mapping pairs for all of the session attributes |
DBA_RSRC_MAPPING_PRIORITY |
Lists the current mapping priority of each attribute |
DBA_USERS
|
Specifically, for the Database Resource Manager, it contains the initial resource consumer group for the user. about the current user, and specifically, for the Database Resource Manager, it contains the current user's initial resource consumer group. |
V$ACTIVE_SESS_POOL_MTH |
Displays all available active session pool resource allocation methods. |
V$BLOCKING_QUIESCE |
Lists all sessions that could potentially block a quiesce operation. Includes sessions that are active and not in the group. |
V$PARALLEL_DEGREE_LIMIT_MTH |
Displays all available parallel degree limit resource allocation methods. |
V$QUEUEING_MTH |
Displays all available queuing resource allocation methods. |
V$RSRC_CONS_GROUP_HISTORY |
For each entry in the view each consumer group in the plan showing the cumulative statistics for the consumer group. |
V$RSRC_CONSUMER_GROUP |
Displays information about active resource consumer groups. This view can be used for tuning. |
V$RSRC_CONSUMER_GROUP_CPU_MTH |
Displays all available CPU resource allocation methods for resource consumer groups. |
V$RSRC_PLAN |
Displays the names of all currently active resource plans. |
V$RSRC_PLAN_CPU_MTH |
Displays all available CPU resource allocation methods for resource plans. |
V$RSRC_PLAN_HISTORY |
Shows when Resource Manager plans were enabled or disabled on the instance. It helps you understand how resources were shared among the consumer groups over time. |
V$RSRC_SESSION_INFO |
Displays Resource Manager statistics for each session. Shows how the session has been affected by the Resource Manager. Can be used for tuning. |
V$SESSION |
Lists session information for each current session. Specifically, lists the name of the resource consumer group of each current session. |