select sess.sid,
sess.serial#,
lo.oracle_username,
lo.os_user_name,
ao.object_name,
lo.locked_mode
from v$locked_object lo,
dba_objects ao,
v$session sess
where ao.object_id = lo.object_id and lo.session_id = sess.sid;
alter system kill session '7479,45865'
select 'alter table ' || a.owner ||'.'||a.table_name ||' modify usr_city_nm varchar2(32) ; ' from all_tab_columns a where a.column_name = 'usr_city_nm'
select upper(f.tablespace_name) "表空間名",
d.tot_grootte_mb "表空間大小(m)",
d.tot_grootte_mb - f.total_bytes "已使用空間(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/1024 "空閒空間(g)",
f.max_bytes "最大塊(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;
select a.owner 所屬使用者,
a.table_name 表名,
e.table_comments 表中文名,
a.column_name 欄位名,
e.column_comments 字段中文名,
a.data_type 字段型別,
a.字段長度,
a.欄位精度,
a.是否為空,
a.建立日期,
a.最後修改日期,
case
when a.owner = d.owner and a.table_name = d.table_name and
a.column_name = d.column_name then
'主鍵'
else
end 是否主鍵
from (select a.owner,
a.table_name,
b.column_name,
b.data_type,
case
when b.data_precision is null then
b.data_length
else
data_precision
end 字段長度,
data_scale 字段精度,
decode(nullable, 'y', '√', 'n', '×') 是否為空,
c.created 建立日期,
c.last_ddl_time 最後修改日期
from all_tables a, all_tab_columns b, all_objects c
where a.table_name = b.table_name
and a.owner = b.owner
and a.owner = c.owner
and a.table_name = c.object_name
-- and a.owner = 'cdbadm' --此處使用者名稱可以更改，但必須大寫英文
and c.object_type = 'table') a
left join (select a.owner, a.table_name, a.column_name, a.constraint_name
from user_cons_columns a, user_constraints b
where a.constraint_name = b.constraint_name
and b.constraint_type = 'p') d
on a.owner = d.owner
and a.table_name = d.table_name
and a.column_name = d.column_name
left join (select cl.owner,
t.table_name,
t.comments table_comments,
cl.column_name,
cl.comments column_comments
from all_col_comments cl, all_tab_comments t
where cl.owner = t.owner
and cl.table_name = t.table_name) e
on a.owner = e.owner
and a.table_name = e.table_name
and a.column_name = e.column_name
order by a.owner, a.table_name;
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