关于oracle11g不收集统计信息的问题
本帖最后由 tangjiangdong 于 2018-2-5 15:04 编辑老师你好，关于oracle11g不收集统计信息，有个问题想请教一下：
1.查看打开状态
SQL> select client_name,status from dba_autotask_client;
CLIENT_NAME STATUS
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auto optimizer stats collection ENABLED
auto space advisor ENABLED
sql tuning advisor ENABLED
2.查看最新的统计信息时间select *
from(select t.OWNER,t.TABLE_NAME,t.LAST_ANALYZED
from dba_tab_statistics t
where t.LAST_ANALYZED is not null
order by t.LAST_ANALYZED desc)
where rownum < 11;
OWNER TABLE_NAME LAST_ANALYZED
------------------------------ ------------------------------ -------------
SFBPM FM_FORM_HEADER 2018/1/31 17:
GREENOFFICE USER_PROFILE 2018/1/3 22:4
GREENOFFICE USER_PORTAL_PROFILE 2018/1/3 22:4
GREENOFFICE TM_TASK_ROUTINE 2018/1/3 22:4
GREENOFFICE UPLOADED_FILES 2018/1/3 22:4
GREENOFFICE STRING_RESOURCES 2018/1/3 22:4
GREENOFFICE SYSTEM_CONFIG 2018/1/3 22:4
GREENOFFICE SYSTEM_CODE_LOCAL 2018/1/3 22:4
GREENOFFICE SYSTEM_CODE_GLOBAL 2018/1/3 22:4
GREENOFFICE SYSTEM_CODE_CATEGORY 2018/1/3 22:4
10 rows selected
3.查看自动收集任务历史执行状态
SQL> select * from DBA_AUTOTASK_JOB_HISTORY;
CLIENT_NAME WINDOW_NAME
WINDOW_START_TIME WINDOW_DURATION
JOB_NAME
JOB_STATUS JOB_START_TIME
JOB_DURATION JOB_ERROR JOB_INFO
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SQL> select * from DBA_AUTOTASK_CLIENT_HISTORY;
CLIENT_NAME WINDOW_NAME
WINDOW_START_TIME WINDOW_DURATION
JOBS_CREATED JOBS_STARTED JOBS_COMPLETED WINDOW_END_TIME
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从上面的输出可以知道库是有开启自动统计信息功能，但却并没自动收集的记录，这是怎么回事呢？
只有一种可能： 在相关的window时间里 ，是不是关闭了数据库。
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