Sql List
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1、查看表空间的使用情况
select sum(bytes)/(1024*1024) as free_space,tablespace_name
from dba_free_space
group by tablespace_name;
select a.tablespace_name,a.bytes total,b.bytes used, c.bytes free,
(b.bytes*100)/a.bytes "% used",(c.bytes*100)/a.bytes "% free"
from sys.sm$ts_avail a,sys.sm$ts_used b,sys.sm$ts_free c
where a.tablespace_name=b.tablespace_name and a.tablespace_name=c.tablespace_name;
2、捕捉运行很久的sql
column username format a12
column opname format a16
column progress format a8
select username,sid,opname,
round(sofar*100 / totalwork,0) || "%" as progress,
time_remaining,sql_text
from v$session_longops , v$sql
where time_remaining <> 0
and sql_address = address
and sql_hash_value = hash_value
/
3.查看还没提交的事务
select * from v$locked_object;
select * from v$transaction;
4。查找object为哪些进程所用
select
p.spid,
s.sid,
s.serial# serial_num,
s.username user_name,
a.type object_type,
s.osuser os_user_name,
a.owner,
a.object object_name,
decode(sign(48 - command),
1,
to_char(command), "action code #" || to_char(command) ) action,
p.program oracle_process,
s.terminal terminal,
s.program program,
s.status session_status
from v$session s, v$access a, v$process p
where s.paddr = p.addr and
s.type = "user" and
a.sid = s.sid and
a.object="subscriber_attr"
order by s.username, s.osuser
5。回滚段查看
select rownum, sys.dba_rollback_segs.segment_name name, v$rollstat.extents
extents, v$rollstat.rssize size_in_bytes, v$rollstat.xacts xacts,
v$rollstat.gets gets, v$rollstat.waits waits, v$rollstat.writes writes,
sys.dba_rollback_segs.status status from v$rollstat, sys.dba_rollback_segs,
v$rollname where v$rollname.name(+) = sys.dba_rollback_segs.segment_n
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