Oracle重建awr步骤
1.稳妥起见，建议停机重建2.如果是rac环境需要修改如下参数：
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alter system set cluster_database = false scope = spfile;
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3.执行如下脚本开始清除，执行速度很快，因为都是drop，如果遇到某个表不存在的报错，无须理会
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@?/rdbms/admin/catnoawr.sql
4.运行脚本执行重建
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@?/rdbms/admin/catawrtb.sql
5.运行脚本编译无效对象6. 11g运行如下脚本
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@?/rdbms/admin/execsvrm.sql
运行这个脚本的时候，遇到如下报错：
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BEGIN
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*
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ERROR at line 1:
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ORA-04068: existing state of packages has been discarded
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ORA-04061: existing state of package "SYS.DBMS_SWRF_INTERNAL" has been
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invalidated
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ORA-04065: not executed, altered or dropped package "SYS.DBMS_SWRF_INTERNAL"
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ORA-06508: PL/SQL: could not find program unit being called:
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"SYS.DBMS_SWRF_INTERNAL"
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ORA-06512: at line 3
解决办法是对包重新编译：
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alter package dbms_swrf_internal compile;
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alter package dbms_swrf_internal compile body;
7.重新执行第六步8.生成一个报告试试
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exec dbms_workload_repository.create_snapshot;
遇到如下报错：
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SQL> exec dbms_workload_repository.create_snapshot;
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BEGIN dbms_workload_repository.create_snapshot; END;
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*
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ERROR at line 1:
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ORA-13518: Invalid database id (819500514)
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ORA-06512: at "SYS.DBMS_WORKLOAD_REPOSITORY", line 99
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ORA-06512: at "SYS.DBMS_WORKLOAD_REPOSITORY", line 122
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ORA-06512: at line 1
在MOS上找到一篇文章说了这个问题
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ORA-13518 : 'Invalid Database Id' On Call to DBMS_WORKLOAD_REPOSITORY Package [ID 984447.1]
Changes
Recently AWR was recreated using catnoawr.sql and catawrtb.sql.
Cause
When a function / procedure is called from DBMS_WORKLOAD_REPOSITORY package, it refers table WRM$_DATABASE_INSTANCE to get dbid information.
As the AWR repositories has been recreated , the table doesn't not have any data present in it.
SQL> select * from WRM$_DATABASE_INSTANCE ;
no rows selected
Solution
The WRM$_DATABASE_INSTANCE gets populated with instance information when the instance is rebooted.
So, If you have recreated AWR using catnoawr.sql , catawrtb.sql , then you need to bounce the Instance .
On restart , the table will be populated with the requisite information.
Hence , better option for recreating AWR is to use startup restrict method.
After the recreation activity is completed , shutdown the database and open it normally.
9.重启后问题解决10.修改rac 相关参数
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alter system set cluster_database=truescope= spfile;
11.生成awr报告
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@$ORACLE_HOME/rdbms/admin/awrrpt.sql
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文章起源：
http://cdweb.net/article/pcpeje.html
