#!/bin/sh

if [ $# -ne 1 ] ;
then
echo "Usage: $0 <Username>";
echo "WARNING: the <Username> MUST in upper case.";
exit 1;
fi

username=$1
echo $username

function_get_info(){
username=$1

sqlplus  / as sysdba  <<EOF
select username,sid,serial# from v\$session where username = '$username';
EXIT
EOF
}

function_get_info ${username} |awk '/^'${username}'/ { print "alter system kill session '\''"  $2 "," $3 "'\'' ; "} '
sql_killsession=`function_get_info |awk '/^'${username}'/ { print "alter system kill session  '\''"  $2 "," $3 "'\''; "} '`
echo $sql_killsession

sqlplus  / as sysdba  <<EOF
#$sql_killsession
EXIT
EOF

标签: oracle, killsession

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2、启用外键约束的命令为：alter table table_name enable constraint constraint_name

3、禁用外键约束的命令为：alter table table_name disable constraint constraint_name

4、然后再用SQL查出数据库中所以外键的约束名：

select 'alter table '||table_name||' enable constraint '||constraint_name||';' from user_constraints where constraint_type='R'

select 'alter table '||table_name||' disable constraint '||constraint_name||';' from user_constraints where constraint_type='R'

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在sqlplus中，首先执行这个脚本
set long 90000
set feedback off
set pagesize 0
set heading off
spool get_seq_ddl.sql
select 'select dbms_metadata.get_ddl('''||t.object_type||''',''' ||t.object_name||''') from dual;' from user_objects t where t.object_type='SEQUENCE';
spool off

再运行新生成的sql脚本，将DDL输出到seq_ddl.sql
spool seq_ddl.sql
@get_seq_ddl.sql
spool off

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UNION ALL --if have tempfile

SELECT D.TABLESPACE_NAME ,
SPACE "SUM_SPACE(M)" ,
BLOCKS SUM_BLOCKS ,
USED_SPACE "USED_SPACE(M)" ,
ROUND(NVL(USED_SPACE,0)/SPACE*100,2) "USED_RATE(%)",
NVL(FREE_SPACE,0) "FREE_SPACE(M)"
FROM
(SELECT TABLESPACE_NAME ,
ROUND(SUM(BYTES)/(1024*1024),2) SPACE,
SUM(BLOCKS) BLOCKS
FROM DBA_TEMP_FILES
GROUP BY TABLESPACE_NAME
) D ,
(SELECT TABLESPACE_NAME ,
ROUND(SUM(BYTES_USED)/(1024*1024),2) USED_SPACE,
ROUND(SUM(BYTES_FREE)/(1024*1024),2) FREE_SPACE
FROM V$TEMP_SPACE_HEADER
GROUP BY TABLESPACE_NAME
) F
WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME(+)

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col event format a32
col name format a32
select sid,event,p1 as file_id, p2 as "block_id/latch", p3 as blocks,l.name
from v$session_wait sw,v$latch l
where event not like '%SQL%' and event not like '%rdbms%'
and event not like '%mon%' and sw.p2 = l.latch#(+);
--求等待事件及其热点对象

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;
--综合以上两条sql，同时显示latch及热点对象(速度较慢)

select sw.sid,event,l.name,de.segment_name
from v$session_wait sw,v$latch l,dba_extents de
where event not like '%SQL%' and event not like '%rdbms%'
and event not like '%mon%' and sw.p2 = l.latch#(+) and sw.p1 = de.file_id(+) and p2 between de.block_id and de.block_id + de.blocks - 1;
--如果是非空闲等待事件，通过等待会话的sid可以求出该会话在执行的sql

select sql_text
from v$sqltext_with_newlines st,v$session se
where st.address=se.sql_address and st.hashvalue=se.sql_hash_value
and se.sid =&wait_sid order by piece;

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