查看Oracle剩余表空间 select a.tablespace_name,free/total*100 pct_free,free/1024/1024 "free(M)" from (select sum(bytes) free ,tablespace_name from dba_free_space group by tablespace_name) a, (select sum(bytes) total ,tablespace_name from dba_data_files group by tablespace_name) b where a.tablespace_name=b.tablespace_name order by pct_free; DROP TABLESPACE temp1 INCLUDING CONTENTS AND DATAFILES; 日常维护工作中,时常会碰到数据出错的情况. 一般有:锁表,空间不够,表无法扩展,数据库被某个写的很烂的sql占用很大的资源等情况. 一下是一些经常要用的sql脚本.希望对大家有帮助. (不过这个可不是我整理出来的) ---增加临时表空间大小 alter temporary tablespace temp add tempfile "/opt/oracle/oradata/ora9/temp10.dbf" size 1000M; --查看表的字录条数 select "select count(1) from "||tname||";" from tab where tname not like "%BIN%" --回滚段监视 select n.usn 回滚段标识, n.NAME 回滚段名称, s.oSUSEr 操作系统用户, s.Username 用户名, s.sid 会话ID, rs.EXTENTS 回滚段扩展次数, rs.wraps, rs.rssize/1024/1024 "使用空间(MBytes)", rs.status 回滚段状态 from v$rollname n, v$rollstat rs, v$session s, v$transaction t where t.addr = s.taddr(+) and rs.usn(+) = n.usn and t.xidusn(+) = n.usn /*and rs.status = "ONLINE"*/ order by rs.rssize --回滚段块事务查询 select s.sid,s.serial#,t.start_time,t.xidusn,s.username from v$session s,v$transaction t,v$rollstat r where s.saddr=t.ses_addr and t.xidusn=r.usn and ((r.curext=t.start_uext-1) or ((r.curext=r.extents-1) and t.start_uext=0)); --锁监视 SELECT b.os_user_name 操作系统用户, b.oracle_username ORACLE用户, b.session_id 会话ID, b.process 进程号, a.object_name 对象名, a.subobject_name 子对象名, d.machine 客户端机器, d.lockwait 锁等待, d.status 会话状态, d.schemaname 数据库对象名称, d.terminal 终端名, d.program 终端程序名, d.logon_time 登陆时间 FROM dba_objects a,v$locked_object b,v$session d --,v$lock c WHERE a.object_id=b.object_id AND b.session_id=d.sid select a.username, a.sid, a.serial#, b.id1 from v$session a, v$lock b where a.lockwait = b.kaddr select a.username, a.sid, a.serial#, b.id1 from v$session a, v$lock b where b.id1 in (select distinct e.id1 from v$session d, v$lock e where d.lockwait = e.kaddr) and a.sid = b.sid and b.request = 0
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