oracle笔记整理16——表空间利用率、锁表、锁包、dbms_job操作

1.表空间使用率查询语句

select * from (select a.TABLESPACE_NAME Tablespace_Name, sum(a.bytes / 1024 / 1024) total_size, sum(nvl(b.free_space1 / 1024 / 1024, 0)) nouse_space, sum(a.bytes / 1024 / 1024) - sum(nvl(b.free_space1 / 1024 / 1024, 0)) used_space, round((sum(a.bytes / 1024 / 1024) - sum(nvl(b.free_space1 / 1024 / 1024, 0))) * 100 / sum(a.bytes / 1024 / 1024), 2) used_pres from dba_data_files a, (select sum(nvl(bytes, 0)) free_space1, file_id from dba_free_space group by file_id) b where a.file_id = b.file_id(+) and a.tablespace_name not in (select value from v$spparameter where name = 'undo_tablespace') group by a.TABLESPACE_NAME) -------------------- union all select tablespace_name, (select sum(bytes_used) / 1024 / 1024 from v$temp_space_header where tablespace_name = a.tablespace_name) total_size, (select sum(bytes_used) / 1024 / 1024 from v$temp_space_header where tablespace_name = a.tablespace_name) - nvl((select sum(su.blocks * to_number(rtrim(p.value))) / 1024 / 1024 as Space from v$sort_usage su, v$parameter p where p.name = 'db_block_size' and su.TABLESPACE = a.tablespace_name), 0) nouse_space, nvl((select sum(su.blocks * to_number(rtrim(p.value))) / 1024 / 1024 as Space from v$sort_usage su, v$parameter p where p.name = 'db_block_size' and su.TABLESPACE = a.tablespace_name), 0) used_space, round(nvl((select sum(su.blocks * to_number(rtrim(p.value))) / 1024 / 1024 as Space from v$sort_usage su, v$parameter p where p.name = 'db_block_size' and su.TABLESPACE = a.tablespace_name) / (select sum(bytes_used) / 1024 / 1024 from v$temp_space_header where tablespace_name = a.tablespace_name) * 100, 0), 2) used_pres from (select distinct tablespace_name from v$temp_space_header) a union all ------------------------- select a.tablespace_name, total_undo total_size, total_undo - used_undo nouse_space, used_undo used_space, trunc(used_undo / total_undo * 100, 2) used_pres from (select nvl(sum(bytes / 1024 / 1024), 0) used_undo, tablespace_name from dba_undo_extents where status = 'ACTIVE' group by tablespace_name) a, (select tablespace_name, sum(bytes / 1024 / 1024) total_undo from dba_data_files where tablespace_name in (select value from v$spparameter where name = 'undo_tablespace') group by tablespace_name) b where a.tablespace_name = b.tablespace_name;

2.锁表及解锁

/*查询数据库锁情况*/
select /*+ RULE */ ls.osuser os_user_name, ls.username user_name, decode(ls.type, 'RW', 'Row wait enqueue lock', 'TM', 'DML enqueue lock', 'TX', 'Transaction enqueue lock', 'UL', 'User supplied lock') lock_type, o.object_name object, decode(ls.lmode, 1, null, 2, 'Row Share', 3, 'Row Exclusive', 4, 'Share', 5, 'Share Row Exclusive', 6, 'Exclusive', null) lock_mode, o.owner, ls.sid, ls.serial# serial_num, ls.id1, ls.id2 from sys.dba_objects o, (select s.osuser, s.username, l.type, l.lmode, s.sid, s.serial#, l.id1, l.id2 from v$session s, v$lock l where s.sid = l.sid) ls where o.object_id = ls.id1 and o.owner <> 'SYS' order by o.owner, o.object_name ;
/*解锁*/
alter system kill session 'sid,serial';

3.锁包及解锁

数据库端
select B.SID,B.SERIAL# from dba_ddl_locks a, v$session b where a.session_id = b.SID and a.name = 'PKG_ZBJK';
ALTER SYSTEM KILL SESSION 'SID,SERIAL#';

--服务器端
select spid, osuser, s.PROGRAM from v$session s, v$process p where s.PADDR = p.ADDR and s.SID = '2935';
kill -9 SPID;

4.dbms_job操作

--创建job
DECLARE
  job NUMBER;
BEGIN sys.dbms_job.submit(job, 'data_chk.main_chk;', sysdate, 'TRUNC(SYSDATE)+1');
  COMMIT;
END;

select * from user_jobs u where u.JOB = '1907';

--修改next_date
begin dbms_job.next_date(1907, TRUNC(SYSDATE)+1);
end;

--查看正在运行的job
select * from dba_jobs_running;

--停止job
begin dbms_job.broken(1907, true);
end;

--查找已经被停止的job 的sid和serial#
select b.SID,b.SERIAL# from v$process a,v$session b where a.ADDR = b.PADDR and b.SID in (select sid from dba_jobs_running);

--杀掉已经被停止的job 的进程
alter system kill session '2277,40421';

--删除job
begin dbms_job.remove(1906);
end;