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oracle常用维护SQL

时间:2015/6/28来源:IT猫扑网作者:网管联盟我要评论(0)

  1.----查某session当前正在执行的sql

  SQL>select s.sid,sql_text from v$session s,v$sql q

  where s.SQL_ADDRESS=q.address and s.sql_hash_value=q.hash_value

  and s.sid in (45,48,107)  and s.serial# in (53098,54004,44803);

  2.--查事件

  SQL>select event,p1text from v$session_wait

  where sid in (45,48,107) and seq# in (53098,54004,44803);

  SQL>select * from v$session_event where sid=14

  ---查索引定义

  SQL>select * from user_ind_columns where index_name=upper('&index_name');

  --重建索引

  SQL>ALTER INDEX <INDEXNAME> REBUILD <TABLESPACENAME>

  --表分析

  analyze table slview.flowraw compute statistics for all indexes;

  --索引提示

  SELECT * FROM A WHERE COL1 = XXX;

  ---查看某表的约束条件

  SQL>select constraint_name, constraint_type,search_condition, r_constraint_name

  from user_constraints where table_name = upper('&table_name');

  SQL>select c.constraint_name,c.constraint_type,cc.column_name

  from user_constraints c,user_cons_columns cc

  where c.owner = upper('&table_owner') and c.table_name = upper('&table_name')

  and c.owner = cc.owner and c.constraint_name = cc.constraint_name

  order by cc.position;

  --查表空间大小

  SELECT upper(f.tablespace_name) "表空间名",d.Tot_grootte_Mb "表空间大小(M)",d.Tot_grootte_Mb - f.total_bytes "已使用空间(M)",

  to_char(round((d.Tot_grootte_Mb - f.total_bytes) / d.Tot_grootte_Mb * 100,2),'990.99') "使用比",f.total_bytes "空闲空间(M)", f.max_bytes "最大块(M)"

  FROM

  (SELECT tablespace_name,  round(SUM(bytes)/(1024*1024),2) total_bytes,round(MAX(bytes)/(1024*1024),2) max_bytes  FROM sys.dba_free_space

  GROUP BY tablespace_name) f,

  (SELECT dd.tablespace_name, round(SUM(dd.bytes)/(1024*1024),2) Tot_grootte_Mb  FROM  sys.dba_data_files dd GROUP BY dd.tablespace_name) d

  WHERE d.tablespace_name = f.tablespace_name  ORDER BY 4 DESC;

  ---查数据库锁表的session

  select o.object_name, l.session_id, s.serial#, s.program,

  s.username, s.command,   s.machine, s.lockwait   from v$locked_object l, all_objects o, v$session s

  where o.object_id = l.object_id   and s.sid = l.session_id ;

  alter system kill session '23,234';

  ----查oracle的job

  select job, what, next_date, interval, failures, broken from user_jobs;

  exec dbms_job.run(5);

  -----查表空间各表大小

  select segment_name, bytes

  from user_segments

  where segment_type = 'TABLE';

  或者

  Select Segment_Name,Sum(bytes)/1024/1024 From User_Extents Group By Segment_Name

  where tablespace_name='USER';

  存储函数和过程

  查看函数和过程的状态

  SQL>select object_name,status from user_objects where object_type='FUNCTION';

  SQL>select object_name,status from user_objects where object_type='PROCEDURE';

  查看函数和过程的源代码

  SQL>select text from all_source where owner=user and name=upper('&plsql_name');

  查补丁

  $ cd $ORACLE_HOME/OPatch

  $ ./opatch lsinventory

关键词标签:oracle

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