oracle 修改自动统计信息时间

今天是2022年1月7日今天值夜班，同事让给优化一个sql，优化完成后，顺便看了下新系统的统计信息情况，发现在晚上做数据采集的时间，系统资源增加，发现是统计信息在跑，在模拟环境测试，特此记录。

 

      - trc                                     get trace path      
      - undo                                    show undo info
      - user | users                            list all users info
      - version                                 show database version
      - xo  <sql_id> [phv]                      xplan.display_awr for given sql_id (add execution order column)
      - xpo <sql_id> [child_number]             xplan.display_cursor for given sql_id(add execution order column)
      - xp  <sql_id>                            display_cursor for given sql_id
      - x   <sql_id>                            display_awr for given sql_id 


  NOTE
  ================
    - Set environment variable DBUSER to change default connect string which  is "/ as sysdba"
    - Set environment variable ORA_TMP to the default temp directory (default if /tmp when not set)

[oracle@rhys ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Fri Jan 7 01:25:45 2022

Copyright (c) 1982, 2013, Oracle.  All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SYS@rhys> col REPEAT_INTERVAL for a60
SYS@rhys> set linesize 200
SYS@rhys> select t1.window_name,t1.repeat_interval,t1.duration from dba_scheduler_windows t1,dba_scheduler_wingroup_members t2
  2  where t1.window_name=t2.window_name and t2.window_group_name='MAINTENANCE_WINDOW_GROUP';

WINDOW_NAME                    REPEAT_I