指令碼一，查出鎖的關係，誰把誰鎖主了
set serveroutput on
declare
mes varchar2(2000);
tmp_id1 number(22);
tmp_id2 number(22);
lk_sid number(22);
tmp_mac varchar2(64);
fl boolean;
begin
fl:=false;
for c1 in (select sid,serial#,machine,lockwait
from v$session
where lockwait is not null) loop
fl:=true;
mes:='sid:'||to_char(c1.sid)||','||c1.machine||'is be locked by sid ';
select id1,id2 into tmp_id1,tmp_id2
from v$lock where sid=c1.sid and kaddr=c1.lockwait;
for c2 in (select sid lk_sid from v$lock where sid!=c1.sid and id1=tmp_id1 and id2=tmp_id2 and block='1') loop
select machine into tmp_mac from v$session where sid=c2.lk_sid;
dbms_output.put_line(mes||to_char(c2.lk_sid)||' '||tmp_mac);
end loop;
end loop;
if not fl then
dbms_output.put_line('目前系統中沒有互鎖現象');
end if;
end;
/第二，相應的sid最近執行的sql
set verify off
column a.username format a10
column c.sql_text format a64
accept sid prompt 'please enter the sid '
select a.username, c.sql_text
from v$session a, v$sqltext c
where a.sid=&sid and
c.hash_value = a.sql_hash_value and
c.address = a.sql_address
order by c.piece
/首先檢視alert.log檔案，查詢ora-60錯誤，其中指明了詳細日誌
檔案的路徑。
alert.log在background_dump_dest引數指定的目錄下
deadlock日誌檔案在user_dump_dest引數指定的目錄下
select username,default_tablespace from user_users;
select * from user_role_privs;
select * from user_sys_privs;
select * from user_tab_privs;
select * from user_tables;
select object_name,object_id from user_objects
where instr(object_name,'log')>0;
select object_name,created from user_objects where object_name=upper
('&table_name');
select * from user_sequences;
select view_name from user_views;
select member from v$logfile;
select version from product_component_version
where substr(product,1,6)='oracle';
用系統管理員，檢視當前資料庫
有幾個使用者連線：
sql> select username,sid,serial# from v$session;
如果要停某個連線用
sql> alter system kill session 'sid,serial#';
如果這命令不行,找它unix的程序數
sql> select pro.spid from v$session ses,v$process pro where ses.sid=21
and ses.paddr=pro.addr;
說明：21是某個連線的sid數
然後用 kill 命令殺此程序號。
select column_name,comments from dict_columns where
table_name='user_indexes';
select column_name,comments from dict_columns where upper(table_name)
='v$session';
如何檢視最大會話數？
select * from v$parameter where name like 'proc%'；
select * from v$license;
select * from user_errors;
select * from v$instance;
select a.sid,spid,status,substr(a.program,1,40)
prog,a.terminal,osuser,value/60/100 value
from v$session a,v$process b,v$sesstat c
where c.statistic#=11 and c.sid=a.sid and a.paddr=b.addr order by
value desc;
select * from v$sqltext where address = 'c0000001e0b4a160';
select sql_text, piece, hash_value
from v$sqltext
where address = 'c0000001e0b4a160'
order by hash_value, piece;
select * from v$sqlarea where address = (select sql_address from
v$session where sid = :1);
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