Shulou(Shulou.com)06/01 Report--

/

locked

*query locked object and analyse reason,kill it

*/

select 'alter system kill session ''' || SID || ',' || SERIAL# || ''';'

from (select distinct a.sid,

a.Serial#,

status,

machine,

LOCKWAIT,

logon_time

from v$session a, v$locked_object b

where (a.status = 'ACTIVE' or a.status = 'INACTIVE')

and a.sid = b.session_id

and b.ORACLE_USERNAME = 'XYHISTEST' --Add username to filter user resources

);

/2. Batch execute the statements generated in the first step

alter system kill session 'sid,serial#';

alter system kill session '6976,33967';/

/3. Query oracle user name, machine name, lock table object/

SELECT l.session_id sid,

s.serial#,

l.locked_mode,

l.oracle_username,

l.os_user_name,

s.machine,

s.terminal,

o.object_name,

s.logon_time

FROM v$locked_object l, all_objects o, v$session s

WHERE l.object_id = o.object_id

AND l.session_id = s.sid

ORDER BY sid, s.serial#;

/3. Or/

select s.SID, s.OSUSER, p.spid as OSPID, s.MACHINE, s.TERMINAL, s.PROGRAM

from v$session s, v$process p

where s.sid = 6 --session_id

and s.paddr = p.addr;

/4. Query is what sql statement is executed to lock the table/

select b.sql_text

from v$session a, v$sql b

where a.sid = 6 --session_id

and a.SQL_ADDRESS = b.ADDRESS(+);

select sql_text

from v$session a, v$sqltext_with_newlines b

where DECODE(a.sql_hash_value, 0, prev_hash_value, sql_hash_value) =

b.hash_value

and a.sid = #149

order by piece;

/5. Query is what sql statement is executed to lock the table/

SELECT l.session_id sid,

s.serial#,

l.locked_mode,

l.oracle_username,

s.user#,

l.os_user_name,

s.machine,

s.terminal,

a.sql_text,

a.action

FROM v$sqlarea a, v$session s, v$locked_object l

WHERE l.session_id = s.sid

AND s.prev_sql_addr = a.address

ORDER BY sid, s.serial#;

/6. Check whether there is SQL for locking tables/

select 'blocker(' || lb.sid || ':' || sb.username || ')_sql:' ||

qb.sql_text blockers,

'waiter (' || lw.sid || ':' || sw.username || ')_sql:' ||

qw.sql_text waiters

from v$lock lb, v$lock lw, v$session sb, v$session sw, v$sql qb, v$sql qw

where lb.sid = sb.sid

and lw.sid = sw.sid

and sb.prev_sql_addr = qb.address

and sw.sql_address = qw.address

and lb.id1 = lw.id1

and sw.lockwait is not null

and sb.lockwait is null

and lb.block = 1;

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