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HomeDatabaseMysql Tutorial解决Oracle 11g安装导致数据库无法自动搜集统计信息

近期发现个别Oracle 11g数据库无法自动收集统计信息,部分视图查询结果如下:SQLgt; select client_name,status from dba_auto

近期发现个别Oracle 11g数据库无法自动收集统计信息,部分视图查询结果如下:

SQL>  select client_name,status from dba_autotask_client where client_name = 'auto optimizer stats collection';
 
CLIENT_NAME                                                      STATUS
---------------------------------------------------------------- --------
auto optimizer stats collection                                  ENABLED
 
SQL>
 
SQL> select client_name,status from dba_autotask_task;
 
CLIENT_NAME                                                      STATUS
---------------------------------------------------------------- --------
 
SQL>
SQL> select window_name,autotask_status from DBA_AUTOTASK_WINDOW_CLIENTS;
 
WINDOW_NAME                    AUTOTASK_STATUS
------------------------------ ---------------
WEDNESDAY_WINDOW              DISABLED
FRIDAY_WINDOW                  DISABLED
SATURDAY_WINDOW                DISABLED
THURSDAY_WINDOW                DISABLED
TUESDAY_WINDOW                DISABLED
SUNDAY_WINDOW                  DISABLED
MONDAY_WINDOW                  DISABLED
 
7 rows selected

发现作业全部DISABLED,经测试发现和数据库安装时未勾选“启用自动维护任务”的现象一致(默认勾选),可能是之前DBA安装时取消勾选,,如下图:

解决Oracle 11g安装导致数据库无法自动搜集统计信息

 

由于未勾选“启用自动维护任务“,数据安装会执行如下命令,导致作业disable:

execute DBMS_AUTO_TASK_ADMIN.disable();

以后数据库如果需要启动自动维护任务,只需要执行如下命令:

SQL> execute DBMS_AUTO_TASK_ADMIN.enable();
 
PL/SQL procedure successfully completed
 
SQL> select window_name,autotask_status from DBA_AUTOTASK_WINDOW_CLIENTS;
 
WINDOW_NAME                    AUTOTASK_STATUS
------------------------------ ---------------
WEDNESDAY_WINDOW              ENABLED
FRIDAY_WINDOW                  ENABLED
SATURDAY_WINDOW                ENABLED
THURSDAY_WINDOW                ENABLED
TUESDAY_WINDOW                ENABLED
SUNDAY_WINDOW                  ENABLED
MONDAY_WINDOW                  ENABLED
 
7 rows selected

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