alter index &index_name monitoring usage;
alter index &index_name nomonitoring usage;
select * from v$object_usage where index_name = &index_name;
--求数据文件的I/O分布
select df.name,phyrds,phywrts,phyblkrd,phyblkwrt,singleblkrds,readtim,writetim
from v$filestat fs,v$dbfile df
where fs.file#=df.file# order by df.name;
--求某个隐藏参数的值
col ksppinm format a54
col ksppstvl format a54
select ksppinm, ksppstvl
from x$ksppi pi, x$ksppcv cv
where cv.indx=pi.indx and pi.ksppinm like '\_%' escape '\' and pi.ksppinm like '%meer%';
--求系统中较大的latch
select name,sum(gets),sum(misses),sum(sleeps),sum(wait_time)
from v$latch_children
group by name having sum(gets) > 50 order by 2;
--求归档日志的切换频率(生产系统可能时间会很长)
select start_recid,start_time,end_recid,end_time,minutes from (select test.*, rownum as rn
from (select b.recid start_recid,to_char(b.first_time,'yyyy-mm-dd hh24:mi:ss') start_time,
a.recid end_recid,to_char(a.first_time,'yyyy-mm-dd hh24:mi:ss') end_time,round(((a.first_time-b.first_time)*24)*60,2) minutes
from v$log_history a,v$log_history b where a.recid=b.recid+1 and b.first_time > sysdate - 1
order by a.first_time desc) test) y where y.rn < 30
--求回滚段正在处理的事务
select a.name,b.xacts,c.sid,c.serial#,d.sql_text
from v$rollname a,v$rollstat b,v$session c,v$sqltext d,v$transaction e
where a.usn=b.usn and b.usn=e.xidusn and c.taddr=e.addr
and c.sql_address=d.address and c.sql_hashvalue=d.hash_value order by a.name,c.sid,d.piece;
--求出无效的对象
select 'alter procedure '||object_name||' compile;'
from dba_objects
where status='INVALID' and wner='&' and object_type in ('PACKAGE','PACKAGE BODY');
/
select owner,object_name,object_type,status from dba_objects where status='INVALID';
--求process/session的状态
select p.pid,p.spid,s.program,s.sid,s.serial#
from v$process p,v$session s where s.paddr=p.addr;
--求当前session的状态
select sn.name,ms.value
from v$mystat ms,v$statname sn
where ms.statistic#=sn.statistic# and ms.value > 0;
--求表的索引信息
select ui.table_name,ui.index_name
from user_indexes ui,user_ind_columns uic
where ui.table_name=uic.table_name and ui.index_name=uic.index_name
and ui.table_name like '&table_name%' and uic.column_name='&column_name';
--显示表的外键信息
col search_condition format a54
select table_name,constraint_name
from user_constraints
where constraint_type ='R' and constraint_name in (select constraint_name from user_cons_columns where column_name='&1');
select rpad(child.table_name,25,' ') child_tablename,
rpad(cp.column_name,17,' ') referring_column,rpad(parent.table_name,25,' ') parent_tablename,
rpad(pc.column_name,15,' ') referred_column,rpad(child.constraint_name,25,' ') constraint_name
from user_constraints child,user_constraints parent,
user_cons_columns cp,user_cons_columns pc
where child.constraint_type = 'R' and child.r_constraint_name = parent.constraint_name and
child.constraint_name = cp.constraint_name and parent.constraint_name = pc.constraint_name and
cp.position = pc.position and child.table_name ='&table_name'
order by child.owner,child.table_name,child.constraint_name,cp.position;
--显示表的分区及子分区(user_tab_subpartitions)
col table_name format a16
col partition_name format a16
col high_value format a81
select table_name,partition_name,HIGH_VALUE from user_tab_partitions where table_name='&table_name'
--使用dbms_xplan生成一个执行计划
explain plan set statement_id = '&sql_id' for &sql;
select * from table(dbms_xplan.display);
--求某个事务的重做信息(bytes)
select s.name,m.value
from v$mystat m,v$statname s
where m.statistic#=s.statistic# and s.name like '%redo size%';
--求cache中缓存超过其5%的对象
select o.owner,o.object_type,o.object_name,count(b.objd)
from v$bh b,dba_objects o
where b.objd = o.object_id
group by o.owner,o.object_type,o.object_name
having count(b.objd) > (select to_number(value)*0.05 from v$parameter where name = 'db_block_buffers');
--求谁阻塞了某个session()
select sid, username, event, blocking_session,
seconds_in_wait, wait_time
from v$session where state in ('WAITING') and wait_class != 'Idle';
--求session的OS进程ID
col program format a54
select p.spid "OS Thread", b.name "Name-User", s.program
from v$process p, v$session s, v$bgprocess b
where p.addr = s.paddr and p.addr = b.paddr
UNION ALL
select p.spid "OS Thread", s.username "Name-User", s.program
from v$process p, v$session s where p.addr = s.paddr and s.username is not null;
--查会话的阻塞
col user_name format a32
select /*+ rule */ lpad(' ',decode(l.xidusn ,0,3,0))||l.oracle_username user_name, o.owner,o.object_name,s.sid,s.serial#
from v$locked_object l,dba_objects o,v$session s
where l.object_id=o.object_id and l.session_id=s.sid order by o.object_id,xidusn desc ;
col username format a15
col lock_level format a8
col owner format a18
col object_name format a32
select /*+ rule */ s.username, decode(l.type,'tm','table lock', 'tx','row lock', null) lock_level, o.owner,o.object_name,s.sid,s.serial#
from v$session s,v$lock l,dba_objects o
where l.sid = s.sid and l.id1 = o.object_id(+) and s.username is not null ;
--求等待的事件及会话信息/求会话的等待及会话信息
select se.sid,s.username,se.event,se.total_waits,se.time_waited,se.average_wait
from v$session s,v$session_event se
where s.username is not null and se.sid=s.sid and s.status='ACTIVE' and se.event not like '%SQL*Net%' order by s.username;
select s.sid,s.username,sw.event,sw.wait_time,sw.state,sw.seconds_in_wait
from v$session s,v$session_wait sw
where s.username is not null and sw.sid=s.sid and sw.event not like '%SQL*Net%' order by s.username;
--求会话等待的file_id/block_id
col event format a24
col p1text format a12
col p2text format a12
col p3text format a12
select sid,event,p1text, p1, p2text, p2, p3text, p3
from v$session_wait
where event not like '%SQL%' and event not like '%rdbms%' and event not like '%mon%' order by event;
select name,wait_time from v$latch l where exists (select 1 from (select sid,event,p1text, p1, p2text, p2, p3text, p3
from v$session_wait
where event not like '%SQL%' and event not like '%rdbms%' and event not like '%mon%'
) x where x.p1= l.latch#);
--求会话等待的对象
col owner format a18
col segment_name format a32
col segment_type format a32
select owner,segment_name,segment_type
from dba_extents
where file_id = &file_id and &block_id between block_id and block_id + blocks - 1;
--求buffer cache中的块信息
select o.OBJECT_TYPE, substr(o.OBJECT_NAME,1,10) objname , b.objd , b.status, count(b.objd)
from v$bh b, dba_objects o
where b.objd = o.data_object_id and o.owner = '&1' group by o.object_type, o.object_name,b.objd, b.status ;
--求日志文件的空间使用
select le.leseq current_log_sequence#, 100*cp.cpodr_bno/le.lesiz percentage_full
from x$kcccp cp,x$kccle le
where le.leseq =cp.cpodr_seq;
--求等待中的对象
select /*+rule */ s.sid, s.username, w.event, o.owner, o.segment_name, o.segment_type,
o.partition_name, w.seconds_in_wait seconds, w.state
from v$session_wait w, v$session s, dba_extents o
where w.event in (select name from v$event_name where parameter1 = 'file#'
and parameter2 = 'block#' and name not like 'control%')
and o.owner <> 'sys' and w.sid = s.sid and w.p1 = o.file_id and w.p2 >= o.block_id and w.p2 < o.block_id + o.blocks
--求当前事务的重做尺寸
select value
from v$mystat, v$statname
where v$mystat.statistic# = v$statname.statistic# and v$statname.name = 'redo size';
--唤醒smon去清除临时段
column pid new_value Smon
set termout off
select p.pid from sys.v_$bgprocess b,sys.v_$process p where b.name = 'SMON' and p.addr = b.paddr
/
set termout on
oradebug wakeup &Smon
undefine Smon
--求回退率
select b.value/(a.value + b.value),a.value,b.value from v$sysstat a,v$sysstat b
where a.statistic#=4 and b.statistic#=5;
--求DISK READ较多的
select st.sql_text from v$sql s,v$sqltext st
where s.address=st.address and s.hashvalue=st.hash_value and s.disk_reads > 300;
--求DISK SORT严重的SQL
select sess.username, sql.sql_text, sort1.blocks
from v$session sess, v$sqlarea sql, v$sort_usage sort1
where sess.serial# = sort1.session_num
and sort1.sqladdr = sql.address
and sort1.sqlhash = sql.hash_value and sort1.blocks > 200;
--求对象的创建代码
column column_name format a36
column sql_text format a99
select dbms_metadata.get_ddl('TABLE','&1') from dual;
select dbms_metadata.get_ddl('INDEX','&1') from dual;
--求表的索引
set linesize 131
select a.index_name,a.column_name,b.status, b.index_type
from user_ind_columns a,user_indexes b
where a.index_name=b.index_name and a.table_name='&1';
求索引中行数较多的
select index_name,blevel,num_rows,CLUSTERING_FACTOR,status from user_indexes where num_rows > 10000 and blevel > 0
select table_name,index_name,blevel,num_rows,CLUSTERING_FACTOR,status from user_indexes where status <> 'VALID'
--求当前会话的SID,SERIAL#
select sid, serial# from v$session where audsid = SYS_CONTEXT('USERENV','SESSIONID');
--求表空间的未用空间
col mbytes format 9999.9999
select tablespace_name,sum(bytes)/1024/1024 mbytes from dba_free_space group by tablespace_name;
--求表中定义的触发器
select table_name,index_type,index_name,uniqueness from user_indexes where table_name='&1';
select trigger_name from user_triggers where table_name='&1';
--求未定义索引的表
select table_name from user_tables where table_name not in (select table_name from user_ind_columns);
--执行常用的过程
exec print_sql('select count(*) from tab');
exec show_space2('table_name');
--求free memory
select * from v$sgastat where name='free memory';
select a.name,sum(b.value) from v$statname a,v$sesstat b where a.statistic# = b.statistic# group by a.name;
查看一下谁在使用那个可以得回滚段,或者查看一下某个可以得用户在使用回滚段,
找出领回滚段不断增长的事务,再看看如何处理它,是否可以将它commit,再不行
就看看能否kill它,等等,查看当前正在使用的回滚段的用户信息和回滚段信息:
set linesize 121
SELECT r.name "ROLLBACK SEGMENT NAME ",l.sid " PID",p.spid "SYSTEM PID ",s.username "ORACLE USERNAME"
FROM v$lock l, v$process p, v$rollname r, v$session s
WHERE l.sid = p.pid(+) AND s.sid=l.sid AND TRUNC(l.id1(+)/65536) = r.usn AND l.type(+) = 'TX' AND l.lmode(+) = 6 ORDER BY r.name;
--查看用户的回滚段的信息
select s.username, rn.name from v$session s, v$transaction t, v$rollstat r, v$rollname rn
where s.saddr = t.ses_addr and t.xidusn = r.usn and r.usn = rn.usn
--生成执行计划
explain plan set statement_id='a1' for &1;
--查看执行计划
select lpad(' ',2*(level-1))||operation operation,options,OBJECT_NAME,position from plan_table
start with id=0 and statement_id='a1' connect by prior id=parent_id and statement_id='a1'
执行计划
~+OE:?p&E)c ?0 1)根据SID,从v$sql中找到相应SQL的HASH_VALUE和ADDRESS ;ITPUB个人空间ag aE(|Zr7D l
SELECT a.sql_text , a.address , a.hash_value
/j+x eq`kA,B0 FROM v$sql a , v$session bITPUB个人空间,O8vr;B8h(Ax
where a.hash_value = b.sql_hash_value
o:D4}m A1m ln4y*^0 and b.sid = &sid ;
*m|5Z C a \Zj+lI0Alan Lee(160921) 22:58:07
AYv,]?m8U8SR0 2)根据hash_value和address的值,从v$sql_plan中找到真实的执行计划。ITPUB个人空间ow*wy7J#v
set line 200;ITPUB个人空间:S5r%IR8lHP6?
col oper format a100;ITPUB个人空间6J/S8L.G a:c#@bMo,v
select lpad(oper,length(oper)+level*2,' ') oper,costITPUB个人空间 hwH]Y@e3f@
from (
IO yk:z~0 select object_name||':'||operation||' '||options as oper,cost,id,parent_idITPUB个人空间X-f\&DH'G_
from v$sql_plan
eX}U\fO9kK0 where hash_value = &hash_value
tn7p&Z&x'}C_-v0 and address = '&address'
%c)g%@ B$B1]}V.W4{K0 )
yQ q} @o/Fq0 start with id=0ITPUB个人空间Rr;x:o3d9u
connect by prior id = parent_id;ITPUB个人空间5V%^ Y FAA3V3Q
Alan Lee(160921) 22:58:26
h3T KZi+z!F0这2步,就可以找出实际正在跑的SQL使用的是什么执行计划
set autotrace traceonly statisticsITPUB个人空间d&E(? g6N'? a X
set autotrace traceonly explainITPUB个人空间7k+} `)G-`j@
set autotrace traceonly on explain
--查看内存中存的使用
select decode(greatest(class,10),10,decode(class,1,'Data',2,'Sort',4,'Header',to_char(class)),'Rollback') "Class",
sum(decode(bitand(flag,1),1,0,1)) "Not Dirty",sum(decode(bitand(flag,1),1,1,0)) "Dirty",
sum(dirty_queue) "On Dirty",count(*) "Total"
from x$bh group by decode(greatest(class,10),10,decode(class,1,'Data',2,'Sort',4,'Header',to_char(class)),'Rollback');
--查看表空间状态
select tablespace_name,extent_management,segment_space_management from dba_tablespaces;
select table_name,freelists,freelist_groups from user_tables;
--查看系统请求情况
SELECT DECODE (name, 'summed dirty write queue length', value)/
DECODE (name, 'write requests', value) "Write Request Length"
FROM v$sysstat WHERE name IN ( 'summed dirty queue length', 'write requests') and value>0;
--计算 buffer命中率
select a.value + b.value "logical_reads", c.value "phys_reads",
round(100 * ((a.value+b.value)-c.value) / (a.value+b.value)) "BUFFER HIT RATIO"
from v$sysstat a, v$sysstat b, v$sysstat c
where a.statistic# = 40 and b.statistic# = 41 and c.statistic# = 42;
SELECT name, (1-(physical_reads/(db_block_gets+consistent_gets)))*100 H_RATIO FROM v$buffer_pool_statistics;
--查看内存使用情况
select least(max(b.value)/(1024*1024),sum(a.bytes)/(1024*1024)) shared_pool_used,
max(b.value)/(1024*1024) shared_pool_size,greatest(max(b.value)/(1024*1024),sum(a.bytes)/(1024*1024))-
(sum(a.bytes)/(1024*1024)) shared_pool_avail,((sum(a.bytes)/(1024*1024))/(max(b.value)/(1024*1024)))*100 avail_pool_pct
from v$sgastat a, v$parameter b where (a.pool='shared pool' and a.name not in ('free memory')) and b.name='shared_pool_size';
--查看用户使用内存情况
select username, sum(sharable_mem), sum(persistent_mem), sum(runtime_mem)
from sys.v_$sqlarea a, dba_users b
where a.parsing_user_id = b.user_id group by username;
--查看对象的缓存情况
select OWNER,NAMESPACE,TYPE,NAME,SHARABLE_MEM,LOADS,EXECUTIONS,LOCKS,PINS,KEPT
from v$db_object_cache where type not in ('NOT LOADED','NON-EXISTENT','VIEW','TABLE','SEQUENCE')
and executions>0 and loads>1 and kept='NO' order by owner,namespace,type,executions desc;
select type,count(*) from v$db_object_cache group by type;
--查看库缓存命中率
select namespace,gets, gethitratio*100 gethitratio,pins,pinhitratio*100 pinhitratio,RELOADS,INVALIDATIONS from v$librarycache
--查看某些用户的hash
select a.username, count(b.hash_value) total_hash,count(b.hash_value)-count(unique(b.hash_value)) same_hash,
(count(unique(b.hash_value))/count(b.hash_value))*100 u_hash_ratio
from dba_users a, v$sqlarea b where a.user_id=b.parsing_user_id group by a.username;
--查看字典命中率
select (sum(getmisses)/sum(gets)) ratio from v$rowcache;
--查看undo段的使用情况
SELECT d.segment_name,extents,optsize,shrinks,aveshrink,aveactive,d.status
FROM v$rollname n,v$rollstat s,dba_rollback_segs d
WHERE d.segment_id=n.usn(+) and d.segment_id=s.usn(+);
--无效的对象
select owner,object_type,object_name from dba_objects where status='INVALID';
select constraint_name,table_name from dba_constraints where status='INVALID';
--求出某个进程,并对它进行跟踪
select s.sid,s.serial# from v$session s,v$process p where s.paddr=p.addr and p.spid=&1;
exec dbms_system.SET_SQL_TRACE_IN_SESSION(&1,&2,true);
exec dbms_system.SET_SQL_TRACE_IN_SESSION(&1,&2,false);
--求出锁定的对象
select do.object_name,session_id,process,locked_mode
from v$locked_object lo, dba_objects do where lo.object_id=do.object_id;
--求当前session的跟踪文件
SELECT p1.value || '/' || p2.value || '_ora_' || p.spid || '.ora' filename
FROM v$process p, v$session s, v$parameter p1, v$parameter p2
WHERE p1.name = 'user_dump_dest' AND p2.name = 'instance_name'
AND p.addr = s.paddr AND s.audsid = USERENV('SESSIONID') AND p.background is null AND instr(p.program,'CJQ') = 0;
--求对象所在的文件及块号
select segment_name,header_file,header_block
from dba_segments where segment_name like '&1';
--求对象发生事务时回退段及块号
select a.segment_name,a.header_file,a.header_block
from dba_segments a,dba_rollback_segs b
where a.segment_name=b.segment_name and b.segment_id='&1'
--9i的在线重定义表
/*如果在线重定义的表没有主键需要创建主键*/
exec dbms_redefinition.can_redef_table('cybercafe','announcement');
create table anno2 as select * from announcement
exec dbms_redefinition.start_redef_table('cybercafe','announcement','anno2');
exec dbms_redefinition.sync_interim_table('cybercafe','announcement','anno2');
exec dbms_redefinition.finish_redef_table('cybercafe','announcement','anno2');
drop table anno2
exec dbms_redefinition.abort_redef_table('cybercafe','announcement','anno2');
--常用的logmnr脚本(cybercafe)
exec sys.dbms_logmnr_d.build(dictionary_filename =>'esal',dictionary_location =>'/home/oracle/logmnr');
exec sys.dbms_logmnr.add_logfile(logfilename=>'/home/oracle/oradata/esal/archive/1_24050.dbf', ptions=>sys.dbms_logmnr.new);
exec sys.dbms_logmnr.add_logfile(logfilename=>'/home/oracle/oradata/esal/archive/1_22912.dbf', ptions=>sys.dbms_logmnr.addfile);
exec sys.dbms_logmnr.add_logfile(logfilename=>'/home/oracle/oradata/esal/archive/1_22913.dbf', ptions=>sys.dbms_logmnr.addfile);
exec sys.dbms_logmnr.add_logfile(logfilename=>'/home/oracle/oradata/esal/archive/1_22914.dbf', ptions=>sys.dbms_logmnr.addfile);
exec sys.dbms_logmnr.start_logmnr(dictfilename=>'/home/oracle/logmnr/esal.ora');
create table logmnr2 as select * from v$logmnr_contents;
死锁问题:1)查找死锁的进程:ITPUB个人空间 XR OS%e)ez
sqlplus "/as sysdba"ITPUB个人空间:V q^`&Y7~*U6z
SELECT s.username,l.OBJECT_ID,l.SESSION_ID,s.SERIAL#,l.ORACLE_USERNAME,ITPUB个人空间)_ `e?'S9N
l.OS_USER_NAME,l.PROCESS FROM V$LOCKED_OBJECT l,V$SESSION S WHERE l.SESSION_ID=S.SID;
7l4ld L:~02)kill掉这个死锁的进程:ITPUB个人空间 M bc7bLcTd^\
alter system kill session 'sid,serial#'; (其中sid=l.session_id)
I*O INS j9vMx-n03)如果还不能解决,ITPUB个人空间l u#g3ff)or(T
select pro.spid from v$session ses,v$process pro where ses.sid=XX and ses.paddr=pro.addr;ITPUB个人空间n;o!vM'}#]x#N p.Y
其中sid用死锁的sid替换。ITPUB个人空间O5^Yvs3x1f
exit
S{c:[1u`@m0--与权限相关的字典
ALL_COL_PRIVS表示列上的授权,用户和PUBLIC是被授予者
ALL_COL_PRIVS_MADE表示列上的授权,用户是属主和被授予者
ALL_COL_RECD表示列上的授权,用户和PUBLIC是被授予者
ALL_TAB_PRIVS表示对象上的授权,用户是PUBLIC或被授予者或用户是属主
ALL_TAB_PRIVS_MADE表示对象上的权限,用户是属主或授予者
ALL_TAB_PRIVS_RECD表示对象上的权限,用户是PUBLIC或被授予者
DBA_COL_PRIVS数据库列上的所有授权
DBA_ROLE_PRIVS显示已授予用户或其他角色的角色
DBA_SYS_PRIVS已授予用户或角色的系统权限
DBA_TAB_PRIVS数据库对象上的所有权限
ROLE_ROLE_PRIVS显示已授予用户的角色
ROLE_SYS_PRIVS显示通过角色授予用户的系统权限
ROLE_TAB_PRIVS显示通过角色授予用户的对象权限
SESSION_PRIVS显示用户现在可利用的所有系统权限
USER_COL_PRIVS显示列上的权限,用户是属主、授予者或被授予者
USER_COL_PRIVS_MADE显示列上已授予的权限,用户是属主或授予者
USER_COL_PRIVS_RECD显示列上已授予的权限,用户是属主或被授予者
USER_ROLE_PRIVS显示已授予给用户的所有角色
USER_SYS_PRIVS显示已授予给用户的所有系统权限
USER_TAB_PRIVS显示已授予给用户的所有对象权限
USER_TAB_PRIVS_MADE显示已授予给其他用户的对象权限,用户是属主
USER_TAB_PRIVS_RECD显示已授予给其他用户的对象权限,用户是被授予者
--如何用dbms_stats分析表及模式?
exec dbms_stats.gather_schema_stats(ownname=>'&USER_NAME',estimate_percent=>dbms_stats.auto_sample_size,
method_opt => 'for all columns size auto',degree=> DBMS_STATS.DEFAULT_DEGREE);
exec dbms_stats.gather_schema_stats(ownname=>'&USER_NAME',estimate_percent=>dbms_stats.auto_sample_size,cascade=>true);
/*
FOR ALL [INDEXED | HIDDEN] COLUMNS [size_clause]
FOR COLUMNS [size clause] column|attribute [size_clause] [,column|attribute [size_clause]...],
where size_clause is defined as size_clause := SIZE {integer | REPEAT | AUTO | SKEWONLY}
integer--Number of histogram buckets. Must be in the range [1,254].
REPEAT--Collects histograms only on the columns that already have histograms.
AUTO--Oracle determines the columns to collect histograms based on data distribution and the workload of the columns.
SKEWONLY--Oracle determines the columns to collect histograms based on the data distribution of the columns
*/
常用系统表,视图和作用
b"G3}k*m!_e`0查看有关用户的信息:dba_users
p2jJ%?Pq u+{0查看有关角色的信息:dba_roles,dba_role_privs,role_sys_privs
s C&d!I`ZM0查看有关系统权限的信息:dba_sys_privsITPUB个人空间Uv%A-ii M
查看当前表空间状况:dba_tablespacesITPUB个人空间PXj~;W]kDB${
查看用户的系统权限:user_sys_privsITPUB个人空间0zr{:F ?6Sc
查看某个用户对另外一个用户授予的权限:user_tab_privs_madeITPUB个人空间a z,P6s$N,B)Y h
查看某个用户对另外一个用户授予的列级权限:user_col_privs_made
IT)OJ&\Fb0查看某个用户接受的权限:user_tab_privs_recd
,bqJ8o zA8v/A^Q0查看某个用户接受的列级权限:user_col_privs_recd
'J6j*R*Njo2z$Hs0查看有关用户的角色信息:user_role_privsITPUB个人空间4T4yZ"Q1xR#S'\
查看有关授予某个角色的系统权限信息:role_sys_privs
R y,I(k Huu!BX } j5S0查看有关授予某个角色的对象权限信息:role_tab_privs
6~G'BLe2x4\,m0查看当前用户所拥有的表信息:user_tables
%i3ZmejX$G0查看当前用户有权限访问的表信息:all_tablesITPUB个人空间.imh[W(C0V1B
查看当前用户所拥有的所有表的列信息:user_tab_columnsITPUB个人空间M R}:s.g2d_?
查看当前用户可以访问的表中的列信息:all_tab_columns
y:TAA"@%jWTyh0查看当前用户所拥有的所有约束信息:user_constraintITPUB个人空间TWltjl#Wn
查看当前用户所拥有的所有约束和列的关系:user_cons_constraint
?7mPv(P$G0查看表中注释内容:user_tab_commentsITPUB个人空间B%x k4eu^|
查看表中列注释内容:user_col_commentsITPUB个人空间e(BU/Rp}d
提供练习的表:dual
a#k.h%Q1f|eBICf%sn0查看相关时区的名称和简称:v$timezone_names
V$OPTION:显示已的Oracle选项ITPUB个人空间`4Ma%L/lc.b)Y
select * from v$option;ITPUB个人空间CyUTn;nZW[
取得Oracle版本的详细信息ITPUB个人空间$? thb6MK
select * from v$version;ITPUB个人空间{ j%t |&O;~/l1d'k
取得初始化参数的详细信息ITPUB个人空间/` H@L0O)H
select name,value,description from v$parameter;ITPUB个人空间t`Nq{|
取得当前例程的详细信息ITPUB个人空间)Y}7v]X.^
select * from v$instance;
ITPUB个人空间 T0l"qxKit sC
1、用户
查看当前用户的缺省表空间
SQL>select username,default_tablespace from user_users;
查看当前用户的角色
SQL>select * from user_role_privs;
查看当前用户的系统权限和表级权限
SQL>select * from user_sys_privs;或ITPUB个人空间6[R d1M8~N%y8b
select username, default_tablespace, temporary_tablespace, priv granted_role, default_role from dba_users u, (select grantee,granted_role priv,default_role from dba_role_privs union all select grantee,privilege priv,'' from dba_sys_privs c ) r where u.username = r.grantee order by username ;
SQL>select * from user_tab_privs;
显示当前会话所具有的权限
SQL>select * from session_privs;
显示指定用户所具有的系统权限
SQL>select * from dba_sys_privs where grantee='GAME';
2、表
查看用户下所有的表
SQL>select * from user_tables;
查看名称包含log字符的表
SQL>select object_name,object_id from user_objects
where instr(object_name,'LOG')>0;
查看某表的创建时间
SQL>select object_name,created from user_objects where object_name=upper('&table_name');
查看某表的大小
SQL>select sum(bytes)/(1024*1024) as "size(M)" from user_segments
where segment_name=upper('&table_name');
查看放在ORACLE的内存区里的表
SQL>select table_name,cache from user_tables where instr(cache,'Y')>0;
3、索引
查看索引个数和类别
SQL>select index_name,index_type,table_name from user_indexes order by table_name;
查看索引被索引的字段
SQL>select * from user_ind_columns where index_name=upper('&index_name');
查看索引的大小
SQL>select sum(bytes)/(1024*1024) as "size(M)" from user_segments
where segment_name=upper('&index_name');
4、序列号
查看序列号,last_number是当前值
SQL>select * from user_sequences;
5、视图
查看视图的名称
SQL>select view_name from user_views;
查看创建视图的select语句
SQL>set view_name,text_length from user_views;
SQL>set long 2000; 说明:可以根据视图的text_length值设定set long 的大小
SQL>select text from user_views where view_name=upper('&view_name');
6、同义词
查看同义词的名称
SQL>select * from user_synonyms;
7、约束条件
查看某表的约束条件
SQL>select constraint_name, constraint_type,search_condition, r_constraint_name
from user_constraints where table_name = upper('&table_name');
SQL>select c.constraint_name,c.constraint_type,cc.column_name
from user_constraints c,user_cons_columns cc
where c.owner = upper('&table_owner') and c.table_name = upper('&table_name')
and c.owner = cc.owner and c.constraint_name = cc.constraint_name
order by cc.position;
8、存储函数和过程
查看函数和过程的状态
SQL>select object_name,status from user_objects where object_type='FUNCTION';
SQL>select object_name,status from user_objects where object_type='PROCEDURE';
查看函数和过程的
SQL>select text from all_source where wner=user and name=upper('&plsql_name');
1. 监控事例的等待
f(@L0Isg~0 select event,ITPUB个人空间vX&[$^{F l
sum(decode(wait_Time,0,0,1)) "Prev",
6i-fx\5ty$R0 sum(decode(wait_Time,0,1,0)) "Curr",ITPUB个人空间j+^UjZ]|5{ I.o
count(*) "Tot" ITPUB个人空间D;nw ]`.F:j+b-|
from v$session_Wait ITPUB个人空间0DH&m-R)C XFAQ
group by event
rS&wf-x&Q0 order by 4;
pf-a+Q!g2DM%D3m0
ie{-K&};L02. 回滚段的争用情况
)qY_!}3iD\g}0 select name, waits, gets, waits/gets "Ratio" ITPUB个人空间`XCJe
from v$rollstat a, v$rollname b ITPUB个人空间l Ofz5fb;H
where a.usn = b.usn;
3K8uW jy:R0
&@O6T3M0K$q:_,tI:W:~-j03. 监控表空间的 I/O 比例
_~8v%V2g0 select df.tablespace_name name,df.file_name "file",f.phyrds pyr,
$jyqs?w1D#[0 f.phyblkrd pbr,f.phywrts pyw, f.phyblkwrt pbwITPUB个人空间Jj6M,`:W W'd _)e
from v$filestat f, dba_data_files dfITPUB个人空间fd-_,S%fWY7{ ^X({
where f.file# = df.file_idITPUB个人空间gJX7@:R1w9~y"P
order by df.tablespace_name;ITPUB个人空间TZ ? zNL]Q4A0|
pl\8we04. 监控文件系统的 I/O 比例ITPUB个人空间'vJ$rL-^*Hy:\6k
select substr(a.file#,1,2) "#", substr(a.name,1,30) "Name",
w%n&e.B4EShA N1F0 a.status, a.bytes, b.phyrds, b.phywrts
%U%g;A"n+e K,V0 from v$datafile a, v$filestat b
'Z w_6kfu0 where a.file# = b.file#;
? z&ZCh0 ITPUB个人空间U/D&o \i_u
5.在某个用户下找所有的索引ITPUB个人空间YY/A)Mf3L
select user_indexes.table_name,
+@@x r Ad4I"lA0 user_indexes.index_name,
,j4`;|$[l0 uniqueness, ITPUB个人空间 r+E2_ KN8nA%UQ}?bW
column_name
a5c1X\i[i,q0 from user_ind_columns, user_indexesITPUB个人空间~'H,X&S \"U E
where user_ind_columns.index_name = user_indexes.index_name and ITPUB个人空间X4e7U.?9Z
user_ind_columns.table_name = user_indexes.table_name ITPUB个人空间s @`+{,D"Y!oJ&d
order by user_indexes.table_type, user_indexes.table_name,ITPUB个人空间&mO5MF,t{o)P3S
user_indexes.index_name, column_position;ITPUB个人空间-UA:B"f.pv
6. 监控 SGA 的命中率ITPUB个人空间;iK0z]2} N D&g
select a.value + b.value "logical_reads", ITPUB个人空间Nr)~^:Mq0Q
c.value "phys_reads",
o7g/|4z.g~0 round(100 * ((a.value+b.value)-c.value) / (a.value+b.value)) "BUFFER HIT RATIO" ITPUB个人空间A)x&DOJ(u
from v$sysstat a, v$sysstat b, v$sysstat cITPUB个人空间},zw{3AF
where a.statistic# = 38 and b.statistic# = 39 and ITPUB个人空间z_*j4Aag [o5a%To
c.statistic# = 40;
j2y`;wF5o7x!~0 ITPUB个人空间o/]CcK*\w0Zr
7. 监控 SGA 中字典缓冲区的命中率ITPUB个人空间-[ u+sz+A
select parameter, gets,Getmisses ,
5L7@Qyp\,V9k0 getmisses/(gets+getmisses)*100 "miss ratio",ITPUB个人空间)u ?2RC:Yz
(1-(sum(getmisses)/ (sum(gets)+sum(getmisses))))*100 "Hit ratio"ITPUB个人空间*}/pP,e;u+y
from v$rowcache
(x+xF@!I0 where gets+getmisses <>0
DUQ6qc.gPPA2V0 group by parameter, gets, getmisses;
?F_ei"J Z0 ITPUB个人空间I}5A(]O
8. 监控 SGA 中共享缓存区的命中率,应该小于1%
n6\W ^4f*|0 select sum(pins) "Total Pins", sum(reloads) "Total Reloads",
ZW4|"c ^e2M+HX^0 sum(reloads)/sum(pins) *100 libcacheITPUB个人空间Tq`f,j"r{&lR$q
from v$librarycache;ITPUB个人空间pbKB7[)_(C
select sum(pinhits-reloads)/sum(pins) "hit radio",ITPUB个人空间MY3IQ T?%}Y
sum(reloads)/sum(pins) "reload percent" ITPUB个人空间G dd?oL |*S6Z vwy
from v$librarycache;ITPUB个人空间(B+u,K`so${
l1xAm.z09. 显示所有数据库对象的类别和大小ITPUB个人空间1D c.v1sA2T\
select type,
IE5c%s5{+T)L.b5t0 count(name) num_instances,
3I2sFa'@]x5p*vH0 sum(source_size) source_size,
7xS4X;i}X5X0 sum(parsed_size) parsed_size,
7kR;K,_ z M"[0 sum(code_size) code_size,
1U7cp!C*I1F"W:mY0 sum(error_size) error_size,ITPUB个人空间#u9tC#{ F{1e)Q
sum(source_size) +sum(parsed_size) +sum(code_size) +sum(error_size) size_required
} u.iUt:X,?%] Z'V0 from dba_object_size
KU|;y(M-\0 group by type
|6{!y3w'H#I3S7a3g0 order by 1;
,x&L~{%Q%R6{7S,w0 ITPUB个人空间7{(F(T kU2a*H
10. 监控 SGA 中重做日志缓存区的命中率,应该小于1%ITPUB个人空间H)D6c8fs4m1w A3w
SELECT name, gets, misses, immediate_gets, immediate_misses,ITPUB个人空间l#_*GR.X ka
Decode(gets,0,0,misses/gets*100) ratio1,
&L6G_2Y;@/M0b:J5I9D0 Decode(immediate_gets+immediate_misses,0,0,
5_ F)~x:{0z-Dt5E v0 immediate_misses/(immediate_gets+immediate_misses)*100) ratio2
z+zVqrE1g?0 FROM v$latch
&V$q#M5t-d#U7g${ NP0 WHERE name IN ('redo allocation', 'redo copy'); ITPUB个人空间Q%X!\:K:^~
ITPUB个人空间 eGL8FTg
11. 监控内存和硬盘的排序比率,最好使它小于 .10,增加 sort_area_size
9W2U6u?2|\0 SELECT name, value
J0C l&i_0 FROM v$sysstat
&@V](b3z&k%x^_ @0 WHERE name IN ('sorts (memory)', 'sorts (disk)'); ITPUB个人空间0T\vw_`;r:c$n
m6~cqg)Z8e012. 监控当前数据库谁在运行什么SQL语句
;H9Afb {XT0 SELECT osuser, username, sql_text
)S8XIO``.ge+UY0 from v$session a, v$sqltext b
8s6PnOO FWL-S0 where a.sql_address =b.address order by address, piece;ITPUB个人空间P9E0fl:|8N)\+]
ITPUB个人空间rT~&m`.X
13. 监控字典缓冲区
g P?$i2dc+V`0 SELECT (SUM(PINS - RELOADS)) / SUM(PINS) "LIB CACHE" ITPUB个人空间%}6nUpT6M$LCP
FROM V$LIBRARYCACHE;
j|a9U6QP0jt0 SELECT (SUM(GETS - GETMISSES - USAGE - FIXED)) / SUM(GETS) "ROW CACHE"
5b+I ]yv0 FROM V$ROWCACHE;
4?Y2sVX S0 SELECT SUM(PINS) "EXECUTIONS", SUM(RELOADS) "CACHE MISSES WHILE EXECUTING"
].v5wj7i'J8[0 FROM V$LIBRARYCACHE;
A6cFAv#nw8| N0 后者除以前者,此比率小于1%,接近0%为好。
9Q7P4u't P O.Y'd0 SELECT SUM(GETS) "DICTIONARY GETS",SUM(GETMISSES) "DICTIONARY CACHE GET MISSES"ITPUB个人空间:[8c7_ ~i2`
FROM V$ROWCACHE;
,j)TN9c?$F"Vs Y0 ITPUB个人空间Pj*ZmOOe
14. 找ORACLE字符集ITPUB个人空间+OD ~c/M q7m
select * from sys.props$ where name='NLS_CHARACTERSET'; ITPUB个人空间`#X}+\rKH-v
bf2k:nlz%d015. 监控 MTS
.^.Ic#_ y+x0 select busy/(busy+idle) "shared servers busy" from v$dispatcher;ITPUB个人空间K4Z]E i8|~(W4O
此值大于0.5时,参数需加大ITPUB个人空间n[R:s*E_
select sum(wait)/sum(totalq) "dispatcher waits" from v$queue where type='dispatcher';
:C ['whF.I+|0 select count(*) from v$dispatcher;
+H} PeC!h0 select servers_highwater from v$mts;ITPUB个人空间.|dS9{x*@aN
servers_highwater接近mts_max_servers时,参数需加大
IzB]P(wQC0 ITPUB个人空间0c.Q"pD4_
16. 碎片程度ITPUB个人空间US~Z%U5w
select tablespace_name,count(tablespace_name) ITPUB个人空间)Pg Uq$B5ei8B+Q+b
from dba_free_space
:{8H9l'KX7j;D0 group by tablespace_name
T;nUn lF S,Sv/L-]s0 having count(tablespace_name)>10;
/AUR'a T6F;a.K}0 alter tablespace name coalesce;ITPUB个人空间*x3SzR8Q
alter table name deallocate unused;ITPUB个人空间/m S.hz.N
create or replace view ts_blocks_v as
Ib"De9E0 select tablespace_name,block_id,bytes,blocks,
1d|Q&ow#L"h0 segment_name ITPUB个人空间#h$E e?"ifj
from dba_free_spaceITPUB个人空间;m o1Q0i/l$bTR9?
union allITPUB个人空间8nS#T;zC7D"\
select tablespace_name,block_id,bytes,blocks,ITPUB个人空间 ME"`H1s$@D
segment_name
w5lYUP:p ^0 from dba_extents;ITPUB个人空间7P&]mD2u
select * from ts_blocks_v;
`~ Y e5?"@%J)]0 select tablespace_name,sum(bytes),max(bytes),count(block_id) ITPUB个人空间'e7o7ZK/r#]E._
from dba_free_space ITPUB个人空间9_:b|&Rv,J
group by tablespace_name;
.Q _9eAKiTW,A~0 查看碎片程度高的表
r,UDY2@0 SELECT segment_name table_name , COUNT(*) extents
;`#^$_Pq:j@a0 FROM dba_segments
I DvlY:R!A)t1?0 WHERE owner NOT IN ('SYS', 'SYSTEM')
Uo$?Hu$uz0 GROUP BY segment_name
rSX@z5N*[3idv0 HAVING COUNT(*) = (SELECT MAX(COUNT(*)) FROM dba_segments GROUP BY segment_name);ITPUB个人空间hw3ta i:m(k
ITPUB个人空间W t*w H1~4e
17. 表、索引的存储情况检查
(ZPY"A`LA Q0 select segment_name,sum(bytes),count(*) ext_quan
mJX|X$eD3B0 from dba_extents ITPUB个人空间x?!~n6p:}
where tablespace_name='&tablespace_name' and
.i~y u6n\7MNpg&M0 segment_type='TABLE' ITPUB个人空间4i,z*Uu6yc
group by tablespace_name,segment_name;
2^1ag\ rbr0 select segment_name,count(*) ITPUB个人空间?u(Ob?cp-fM
from dba_extents
U%F^|8MU$UXM0 where segment_type='INDEX' and wner='&owner'
:v1c ?oo$E$N0 group by segment_name;
*H bb_X{/f0 ITPUB个人空间@Pl\3w`3W3G
18、找使用CPU多的用户sessionITPUB个人空间G6b4A rsb*lq|4n
12是cpu used by this sessionITPUB个人空间#sW'z\;G
select a.sid,spid,status,substr(a.program,1,40) prog,ITPUB个人空间+p!j$vF[Vr@;G
a.terminal,osuser,value/60/100 value
]u'`\;i|6u`A0 from v$session a,v$process b,v$sesstat c
7v(]&m4}R ysNQ"G0 where c.statistic#=12 and
I)geJ(J1?3[;p#f)[E7lk0 c.sid=a.sid and ITPUB个人空间K7Rzsl/~"t7P
a.paddr=b.addr
8g![o!k$O1E0 order by value desc;ITPUB个人空间SK at6X+Rb#k.A
ITPUB个人空间mX&?@y6_.}q
19.对可疑/性能不好的 Process来进行Trace.,可以用tkprof来分析Trace的结果.比较方便.使用Unix的KSH.
KUJ] Mr(g)o-`?0 (1) start_trc:
x ^q%T7V7Z'Y0 #!/bin/ksh
n V0MZB_0 if (( $# != 1 )) ITPUB个人空间I4ySb#n3j8{ S
then ITPUB个人空间6`OM:A i v
echo Usuage: start_trc pid ITPUB个人空间z}k0Y]*y7by+h't
fi ITPUB个人空间#mX(jfIu
sid_serial=$(print "
r}7NIda4\ Dj;g0 connect / as sysdba; ITPUB个人空间,}%[pX[R
set heading off;
ql+bA)[a I0 set feedback off; ITPUB个人空间*@{ MVr6KUt
select a.sid,a.serial# from v\$session a,v\$process b where a.paddr=b.addr and b.spid=$1; ITPUB个人空间hhh.J4r0OA
exit; ITPUB个人空间;d*IS6z6X'e9^3[k
" | sqlplus -s /nolog | grep -v 'Connected' | sed -e 's/\([0-9]\{1,\}\)/\1,/' -e '/^$/d' )
%i*z6[Y*q2? _&VS m0 if [[ -z $sid_serial ]]
(J@%WE2gtXUu0 then ITPUB个人空间.| ^)yC Yx.Vx'e M)Q
print "Seems that this process $1 is not an Oracle process!" ITPUB个人空间"A` j1Om0J#e R?
exit 1
3\%o0{#K8u[4ulH0 fi ITPUB个人空间'_)W'mUKg&x'bM {
print " ITPUB个人空间,_'i;B%jYv
connect / as sysdba;
*g~5j"pX+\"t)b0 execute dbms_system.set_sql_trace_in_session($sid_serial,true); ITPUB个人空间1J?zDS&Q~ a
exit;
/f&Y,`9Z2Lc0 " | sqlplus -s /nolog ITPUB个人空间8Gwa7n _F v1m
ITPUB个人空间's@!xBd%Ih3{2p XB7nY
(2) stop_trc:
P6~3@9a3{ R$q)M0 #!/bin/ksh
N[ Wlb#n2`0 if (( $# != 1 ))
Y&|\\SqNA*oL0 then
(H7]"vgg:J ^0 echo Usuage: stop_trc pid
B3`g6R~@)[:\/J0 fi
\j~C4]kUXZ0 sid_serial=$(print "
{n@l5I[4j8o)^9\0 connect / as sysdba; ITPUB个人空间5i6P)G0w$tQH{Z
set heading off;
;QG`)d(KB4~0 set feedback off; ITPUB个人空间%m%^*M rdo~1R
select a.sid,a.serial# from v\$session a,v\$process b where a.paddr=b.addr and b.spid=$1;
awx0T'd8N0v N0 exit; ITPUB个人空间2N wy(kTd$h
" | sqlplus -s /nolog | grep -v 'Connected' | sed -e 's/\([0-9]\{1,\}\)/\1,/' -e '/^$/d' )
{;\8B @Cz-sFo q0 if [[ -z $sid_serial ]] ITPUB个人空间w$do;M6s`d ]!|
then ITPUB个人空间/[7o?&G%Ibp/M
print "Seems that this process $1 is not an Oracle process!" ITPUB个人空间Df7m5G/l'|{(d"D:~~C
exit 1
d4C'o1Cs/z~0 fi
nJ.^*Pak'\0 print " ITPUB个人空间 g.I;d$D0qvf:uBS$r
connect / as sysdba; ITPUB个人空间+S[jo2Z} ]o
execute dbms_system.set_sql_trace_in_session($sid_serial,false); ITPUB个人空间7_Q5_(Ed!i2?F@A1P
exit;
OstX X|"z5`0 " | sqlplus -s /nologITPUB个人空间;O%XD$g,[7m,r
G|!?"e_ J^7uKX020.查看Lock ITPUB个人空间"F:Do.f,V'R7q7pr
SELECT sn.username, m.sid, m.type, ITPUB个人空间#W |1Uqb+k
DECODE(m.lmode, 0, 'None', ITPUB个人空间v%AQ aa$liL
1, 'Null',
]/a$n'_B5Q#r0 2, 'Row Share',
&Z` H-?es0 3, 'Row Excl.', ITPUB个人空间lN\s h)H#W
4, 'Share',
bpC+UH#eP3e g0 5, 'S/Row Excl.', ITPUB个人空间kueF\(GW w(pS3}
6, 'Exclusive',
(j'I2[VQ0 lmode, ltrim(to_char(lmode,'990'))) lmode,
,G8SlC#P~0 DECODE(m.request,0, 'None',
%Z#Z4l N"w#b0 1, 'Null',
#Ou9C5q-Ao;eK0 2, 'Row Share', ITPUB个人空间!N)KL l{K
3, 'Row Excl.', ITPUB个人空间4M;hOy;I1Co4\
4, 'Share', ITPUB个人空间!A!aL6~]!WS$~
5, 'S/Row Excl.', ITPUB个人空间Fge+U2s
6, 'Exclusive',
OR?U1j0 request, ltrim(to_char(m.request,'990'))) request, ITPUB个人空间n#|*l@;`1m5{
m.id1, m.id2 ITPUB个人空间/Hmq+_pM
FROM v$session sn, v$lock m
h#a"Ns1y;|1}|f!X4g0 WHERE (sn.sid = m.sid AND m.request != 0) OR
@%np4U,I0 ( sn.sid = m.sid AND ITPUB个人空间'e6[BQ+m2i}apZ5a
m.request = 0 AND ITPUB个人空间1W~xK7r\W4S2E
lmode != 4 AND
@/kPMX)n1Y0 (id1, id2) IN (
*h3n sz?h N-M|0 SELECT s.id1, s.id2
3bp$Tw.UVlc0 FROM v$lock s ITPUB个人空间2I NS/VC.{J
WHERE request != 0 AND
;Wb V-F ^P a0 s.id1 = m.id1 AND ITPUB个人空间f4i1oh8OGN3F
s.id2 = m.id2
b!C9?6yT8p0 )
3QkYJo)mH0 )
8ml.k"`q,q0 ORDER BY id1, id2, m.request;
k6~!V`,JWWn6g ?0
v m1g!SD5Oo0 select l.sid,s.serial#,s.username,s.terminal, ITPUB个人空间-G-e1F,_/i1T1hJN
decode(l.type,'RW','RW - Row Wait Enqueue',
AR}jg,f u(T5EF0 'TM','TM - DML Enqueue',
JR Z EyR,w0 'TX','TX - Trans Enqueue',
/O!fpw3XV6qk%w0 'UL','UL - User',l.type||'System') res, ITPUB个人空间W{}!yz`uc a
substr(t.name,1,10) tab,u.name owner, ITPUB个人空间JHxg ~A#N!A9Gh
l.id1,l.id2, ITPUB个人空间 b+w/q.stdB;{
decode(l.lmode,1,'No Lock', ITPUB个人空间'?2nt @:Ser_
2,'Row Share', ITPUB个人空间!I A.ktK$}#b
3,'Row Exclusive',
5poCme:~/oeV0 4,'Share',
Bj(EN0B!q,bZ0 5,'Shr Row Excl',
Q t H1e} g0 6,'Exclusive',null) lmode,
*wC9zclT w*h$D0 decode(l.request,1,'No Lock', ITPUB个人空间\P{zB8GE\
2,'Row Share', ITPUB个人空间Y'Ub }/^sX.s
3,'Row Excl',
L x6[N:hT0 4,'Share', ITPUB个人空间;S-tcQ8U]
5,'Shr Row Excl',
PC'G/I\#^9~:j7U0 6,'Exclusive',null) request ITPUB个人空间8y2PM)lJ*Tl
from v$lock l, v$session s, ITPUB个人空间M5o)L7As
sys.user$ u,sys.obj$ t ITPUB个人空间M:ccV&ZH
where l.sid = s.sid and ITPUB个人空间/mO.JUI|
s.type != 'BACKGROUND' and
:bQNA]M3_0 t.obj# = l.id1 and ITPUB个人空间:}:K3O P6]9K4a
u.user# = t.owner#;ITPUB个人空间S.KQBk`,XD
監控登入登出的用戶:ITPUB个人空间HXZ\n*}&M
創建如下的兩張表:
'r:QG8k)K] p0create table login_log -- 登入登出信息表
@VM,lA-I+og0(ITPUB个人空间 V2L.{N1J2y*RE
session_id int not null, -- sessionidITPUB个人空间c'WZ!P n/eEP.d w
login_on_time date, -- 登入時間 ITPUB个人空间%}y#B`1?1KT
login_off_time date, -- 登出時間
;k:L/^#BF8C3~B6p D1{CE0 user_in_db varchar2(30), -- 登入的db user
1J([0O#jvb |C*l0 machine varchar2(20), -- 機器名ITPUB个人空间@Hi,`FAP ~
ip_address varchar2(20), -- ip地址
5z-[ D5y+m/x0 run_program varchar2(20) -- 以何程序登入ITPUB个人空间[5vhL:]$J*y$v8S
);
create table allow_user -- 網域用戶表
rQ#s$A NQ0(ITPUB个人空间)OZy"z} ]y
ip_address varchar2(20), -- ip地址
7beP p%cK/a-G!t0 login_user_name nvarchar2(20) -- 操作者姓名
m`(~-s-Rn"QD(e0);
創建如下的兩個觸發器:ITPUB个人空间d W8@og6D&c
create or replace trigger login_on_info -- 紀錄登入信息的觸發器
.go O?.V0after logon on databaseITPUB个人空间 e(]o vKn5M:n;X
BeginITPUB个人空间"BQ mJk%G0V ?:me7V
insert into login_log(session_id,login_on_time,login_off_time,user_in_db,machine,ip_address,run_program)
v)C\mT0 select AUDSID,sysdate,null,sys.login_user,machine,SYS_CONTEXT('USERENV','IP_ADDRE
来自 “ ITPUB博客 ” ,链接:http://blog.itpub.net/25472150/viewspace-690001/,如需转载,请注明出处,否则将追究法律责任。