Library Cache Lock

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Library Cache Lock

Library Cache Lock

2004-06-02 - By Bobak, Mark

Reply: << 11 12 13 14 15 16 17 18 19 20 >>

Hmm....actually, the way it is there, it will only show the blocker. If you want it to show the blocker and all the waiters, just comment out:
'and pn.kglpnmod != 0 '.

-- --Original Message-- --
From: oracle-l-bounce@(protected) [mailto:oracle-l-bounce@(protected)]On Behalf Of Bobak, Mark
Sent: Wednesday, June 02, 2004 9:58 AM
To: oracle-l@(protected)
Subject: RE: library cache lock

David,

Try the following query to find the blocked sessions and which session is the blocker.
Note that due to the order by, the first session should be the blocker.

-Mark

select /*+ ordered use_nl(lob pn ses) */
decode(lob.kglobtyp, 0, 'NEXT OBJECT ', 1, 'INDEX ', 2, 'TABLE ', 3, 'CLUSTER ',
4, 'VIEW ', 5, 'SYNONYM ', 6, 'SEQUENCE ',
7, 'PROCEDURE ', 8, 'FUNCTION ', 9, 'PACKAGE ',
11, 'PACKAGE BODY ', 12, 'TRIGGER ',
13, 'TYPE ', 14, 'TYPE BODY ',
19, 'TABLE PARTITION ', 20, 'INDEX PARTITION ', 21, 'LOB ',
22, 'LIBRARY ', 23, 'DIRECTORY ', 24, 'QUEUE ',
28, 'JAVA SOURCE ', 29, 'JAVA CLASS ', 30, 'JAVA RESOURCE ',
32, 'INDEXTYPE ', 33, 'OPERATOR ',
34, 'TABLE SUBPARTITION ', 35, 'INDEX SUBPARTITION ',
40, 'LOB PARTITION ', 41, 'LOB SUBPARTITION ',
42, 'MATERIALIZED VIEW ',
43, 'DIMENSION ',
44, 'CONTEXT ', 46, 'RULE SET ', 47, 'RESOURCE PLAN ',
48, 'CONSUMER GROUP ',
51, 'SUBSCRIPTION ', 52, 'LOCATION ',
55, 'XML SCHEMA ', 56, 'JAVA DATA ',
57, 'SECURITY PROFILE ', 59, 'RULE ',
62, 'EVALUATION CONTEXT ',
'UNDEFINED ') object_type,
lob.kglnaobj object_name,
pn.kglpnmod lock_mode_held,
pn.kglpnreq lock_mode_requested,
ses.sid,
ses.serial#,
ses.username
from v$session_wait vsw,
x$kglob lob,
x$kglpn pn,
v$session ses
where vsw.event = 'library cache lock '
and vsw.p1raw = lob.kglhdadr
and lob.kglhdadr = pn.kglpnhdl
and pn.kglpnmod != 0
and pn.kglpnuse = ses.saddr
order by pn.kglpnmod desc, pn.kglpnreq desc
/

-- --Original Message-- --
From: oracle-l-bounce@(protected) [mailto:oracle-l-bounce@(protected)]On Behalf Of David Sharples
Sent: Wednesday, June 02, 2004 9:40 AM
To: oracle-l@(protected)
Subject: RE: library cache lock

I searched (probably on wrong words) didn 't return anything useful as I could see, can you show me a url?

__ __

From: oracle-l-bounce@(protected) [mailto:oracle-l-bounce@(protected)] On Behalf Of Khedr, Waleed
Sent: 02 June 2004 14:10
To: oracle-l@(protected)
Subject: RE: library cache lock

The metalink has answers for similar issues.

-- --Original Message-- --
From: David Sharples [mailto:dsharples@(protected)]
Sent: Wednesday, June 02, 2004 8:44 AM
To: oracle-l@(protected)
Subject: library cache lock

Hi, got a strange problem. I am trying to truncate a partition in a table, but it just hangs forever, it is waiting on a library cache lock. Anyone know why and how I can clear it - flushing the shared pool didn 't help and there are no other sessions touching that table.

Thanks

Dave

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<BODY lang=EN-US vLink=purple link=blue >
<DIV > Hmm....actually, the way it is there, it will only show the
blocker. If you want it to show the blocker and all the waiters, just
comment out: </DIV >
<DIV > 'and
pn.kglpnmod != 0 '. </DIV >
<BLOCKQUOTE dir=ltr style= "MARGIN-RIGHT: 0px " >
<DIV class=OutlookMessageHeader dir=ltr align=left > -- --Original Message-- -- From: 
oracle-l-bounce@(protected) [mailto:oracle-l-bounce@(protected)] On
Behalf Of Bobak, Mark Sent: Wednesday, June 02, 2004 9:58
AM To: oracle-l@(protected) Subject: RE: library cache
lock </DIV >
<DIV > David, </DIV >
<DIV > </DIV >
<DIV > Try
the following query to find the blocked sessions and which session is the
blocker. </DIV >
<DIV > Note
that due to the order by, the first session should be the
blocker. </DIV >
<DIV > </DIV >
<DIV > -Mark </DIV >
<DIV > </DIV >
<DIV > select /*+ ordered use_nl(lob pn
ses) */ decode(lob.kglobtyp, 0, 'NEXT
OBJECT ', 1, 'INDEX ', 2, 'TABLE ', 3,
'CLUSTER ', 
4, 'VIEW ', 5, 'SYNONYM ', 6,
'SEQUENCE ', 
7, 'PROCEDURE ', 8, 'FUNCTION ', 9,
'PACKAGE ', 
11, 'PACKAGE BODY ', 12,
'TRIGGER ', 
13, 'TYPE ', 14, 'TYPE
BODY ', 
19, 'TABLE PARTITION ', 20, 'INDEX PARTITION ', 21,
'LOB ', 
22, 'LIBRARY ', 23, 'DIRECTORY ', 24,
'QUEUE ', 
28, 'JAVA SOURCE ', 29, 'JAVA CLASS ', 30, 'JAVA
RESOURCE ', 
32, 'INDEXTYPE ', 33,
'OPERATOR ', 
34, 'TABLE SUBPARTITION ', 35, 'INDEX
SUBPARTITION ', 
40, 'LOB PARTITION ', 41, 'LOB
SUBPARTITION ', 
42, 'MATERIALIZED
VIEW ', 
43,
'DIMENSION ', 
44, 'CONTEXT ', 46, 'RULE SET ', 47, 'RESOURCE
PLAN ', 
48, 'CONSUMER
GROUP ', 
51, 'SUBSCRIPTION ', 52,
'LOCATION ', 
55, 'XML SCHEMA ', 56, 'JAVA
DATA ', 
57, 'SECURITY PROFILE ', 59,
'RULE ', 
62, 'EVALUATION
CONTEXT ', 
'UNDEFINED ') object_type, lob.kglnaobj
object_name, pn.kglpnmod
lock_mode_held, pn.kglpnreq
lock_mode_requested, 
ses.sid, 
ses.serial#, ses.username 
from v$session_wait vsw, x$kglob
lob, x$kglpn
pn, v$session ses where
vsw.event = 'library cache lock ' and vsw.p1raw =
lob.kglhdadr and lob.kglhdadr = pn.kglpnhdl 
and pn.kglpnmod != 0 and pn.kglpnuse = ses.saddr </DIV >
<DIV > o rder by pn.kglpnmod desc, pn.kglpnreq
desc / </DIV >
<BLOCKQUOTE dir=ltr style= "MARGIN-RIGHT: 0px " >
<DIV class=OutlookMessageHeader dir=ltr align=left > -- --Original Message-- -- From: 
oracle-l-bounce@(protected) [mailto:oracle-l-bounce@(protected)] On
Behalf Of David Sharples Sent: Wednesday, June 02, 2004 9:40
AM To: oracle-l@(protected) Subject: RE: library cache
lock </DIV >
<DIV class=Section1 >
 I searched
(probably on wrong words) didn’t return anything useful as I could see, can
you show me a url? <o:p > </o:p > 
 <o:p > </o:p > 
<DIV >
<DIV class=MsoNormal style= "TEXT-ALIGN: center " align=center > 
<HR tabIndex=-1 align=center width= "100% " SIZE=2 >
 </DIV >
 From: 
oracle-l-bounce@(protected) [mailto:oracle-l-bounce@(protected)]
 On Behalf Of Khedr,
Waleed Sent: 02 June 2004
14:10 To: 
oracle-l@(protected) Subject: RE: library cache
lock <o:p > </o:p > </DIV >
 <o:p > </o:p > 
<DIV >
 The metalink has answers for similar
issues. <o:p > </o:p > </DIV >
<DIV >
 <o:p > </o:p > </DIV >
<BLOCKQUOTE
style= "MARGIN-TOP: 5pt; MARGIN-BOTTOM: 5pt; MARGIN-RIGHT: 0cm " > -- --Original
Message-- -- From: David
Sharples [mailto:dsharples@(protected)] Sent: Wednesday, June 02, 2004 8:44
AM To: 
oracle-l@(protected) Subject: library cache
lock <o:p > </o:p > 
 <!-- Converted from text/rtf format -- >Hi,
got a strange problem. I am trying to truncate a partition in a
table, but it just hangs forever, it is waiting on a library cache
lock. Anyone know why and how I can clear it – flushing the shared
pool didn’t help and
there are no other sessions touching that
table. <o:p > </o:p > 
 Thanks <o:p > </o:p > 
 Dave <o:p > </o:p > </BLOCKQUOTE > </DIV > </BLOCKQUOTE > </BLOCKQUOTE > </BODY > </HTML >