Oracle自用脚本（持续更新）

--查询Oracle正在执行的sql语句及执行该语句的用户

SELECT b.sid oracleID,
       b.username 登录Oracle用户名,
       b.serial#,
       spid 操作系统ID,
       paddr,
       sql_text 正在执行的SQL,
       b.machine 计算机名
FROM v$process a, v$session b, v$sqlarea c
WHERE a.addr = b.paddr
  AND b.sql_hash_value = c.hash_value

--查看正在执行sql的发起者的发放程序

SELECT OSUSER 电脑登录身份,
       PROGRAM 发起请求的程序,
       USERNAME 登录系统的用户名,
       SCHEMANAME,
       B.Cpu_Time 花费cpu的时间,
       STATUS,
       B.SQL_TEXT 执行的sql
FROM V$SESSION A
LEFT JOIN V$SQL B ON A.SQL_ADDRESS = B.ADDRESS
                   AND A.SQL_HASH_VALUE = B.HASH_VALUE
ORDER BY b.cpu_time DESC 

--查出oracle当前的被锁对象

SELECT l.session_id sid,
       s.serial#,
       l.locked_mode 锁模式,
       l.oracle_username 登录用户,
       l.os_user_name 登录机器用户名,
       s.machine 机器名,
       s.terminal 终端用户名,
       o.object_name 被锁对象名,
       s.logon_time 登录数据库时间
FROM v$locked_object l, all_objects o, v$session s
WHERE l.object_id = o.object_id
   AND l.session_id = s.sid
ORDER BY sid, s.serial#;

--查看Oracle数据库SQL执行历史

-- 找出哪个数据库用户用什么程序在最近三天执行过delete或truncate table的操作
SELECT c.username,
     a.program,
     b.sql_text,
     b.command_type,
     a.sample_time
FROM dba_hist_active_sess_history a
     JOIN dba_hist_sqltext b
        ON a.sql_id = b.sql_id
     JOIN dba_users c
        ON a.user_id = c.user_id
WHERE a.sample_time BETWEEN SYSDATE - 3 AND SYSDATE
  AND b.command_type IN (7, 85)
ORDER BY a.sample_time DESC;

--window下管理服务和实例启动的命令oradmin

http://blog.chinaunix.net/uid-7900301-id-2548168.html

http://blog.sina.com.cn/s/blog_4a407a16010009n7.html

---整个库的增量

with tmp as
(select rtime,
                       sum(tablespace_usedsize_kb) tablespace_usedsize_kb,
                       sum(tablespace_size_kb) tablespace_size_kb
                  from (select rtime,
                               e.tablespace_id,
                               (e.tablespace_usedsize) * (f.block_size) / 1024 tablespace_usedsize_kb,
                               (e.tablespace_size) * (f.block_size) / 1024 tablespace_size_kb
                          from dba_hist_tbspc_space_usage e,
                               dba_tablespaces            f,
                               v$tablespace               g
                         where e.tablespace_id = g.TS#
                           and f.tablespace_name = g.NAME
                           and f.contents not in ('TEMPORARY','UNDO'))
                 group by rtime)
       select tmp.rtime,
              tablespace_usedsize_kb,
              tablespace_size_kb,
              (tablespace_usedsize_kb -
              LAG(tablespace_usedsize_kb, 1, NULL) OVER(ORDER BY tmp.rtime)) AS DIFF_KB
         from tmp,
              (select max(rtime) rtime
                 from tmp
                group by substr(rtime, 1, 10)) t2
        where t2.rtime = tmp.rtime
        ORDER BY rtime
        /

--某个表空间的增量查询

with tmp as
(select rtime,
                       sum(tablespace_usedsize_kb) tablespace_usedsize_kb,
                       sum(tablespace_size_kb) tablespace_size_kb
                  from (select rtime,g.name,
                               e.tablespace_id,
                               (e.tablespace_usedsize) * (f.block_size) / 1024 tablespace_usedsize_kb,
                               (e.tablespace_size) * (f.block_size) / 1024 tablespace_size_kb
                          from dba_hist_tbspc_space_usage e,
                               dba_tablespaces            f,
                               v$tablespace               g
                         where e.tablespace_id = g.TS#
                           and f.tablespace_name = g.NAME
                           and f.contents not in ('TEMPORARY','UNDO')
                           and g.name=upper('&tablespace_name'))
                 group by rtime)
       select tmp.rtime,
              tablespace_usedsize_kb,
              tablespace_size_kb,
              (tablespace_usedsize_kb -
              LAG(tablespace_usedsize_kb, 1, NULL) OVER(ORDER BY tmp.rtime)) AS DIFF_KB
         from tmp,
              (select max(rtime) rtime
                 from tmp
                group by substr(rtime, 1, 10)) t2
        where t2.rtime = tmp.rtime
        ORDER BY rtime
        /

--Oracle九大性能视图之1.v$sort_usage 临时表空间的使用情况

select se.username,
       se.sid,
       se.serial#,
       se.sql_address,
       se.machine,
       se.program,
       su.extents,
       su.blocks * to_number(rtrim(p.value)) as Space,
       tablespace,
       segtype,
       sql_text,
       s.last_active_time
  from v$sort_usage su, v$parameter p, v$session se, v$sql s
 where p.name = 'db_block_size'
   and su.session_addr = se.saddr
   and s.hash_value = su.sqlhash
   and s.address = su.sqladdr
 order by se.username, se.sid;