Comments on: Making self deadlock on the library cache pin

By: Surachart Opun

Surachart Opun — Mon, 29 Nov 2010 03:37:21 +0000

Cool…
Some database, developers often recompile stored procedure.
We could not recompile stored procedure. After I checked I found that stored procedure hung in Library Cach…. I have to kill them.

I use this sql from Steve Adams (www.ixora.com.au)

SELECT
substr(DECODE(o.kglobtyp,
7, ‘PROCEDURE’, 8, ‘FUNCTION’, 9, ‘PACKAGE’, 12, ‘TRIGGER’, 13,
‘CLASS’),1,15) “TYPE”,
substr(o.kglnaown,1,30) “OWNER”,
substr(o.kglnaobj,1,30) “NAME”,
s.indx “SID”,
s.ksuseser “SERIAL”
FROM
sys.X$KGLOB o,
sys.X$KGLPN p,
sys.X$KSUSE s
WHERE
o.inst_id = USERENV(‘Instance’) AND
p.inst_id = USERENV(‘Instance’) AND
s.inst_id = USERENV(‘Instance’) AND
o.kglhdpmd = 2 AND
o.kglobtyp IN (7, 8, 9, 12, 13) AND
p.kglpnhdl = o.kglhdadr AND
s.addr = p.kglpnses and substr(o.kglnaobj,1,30)=’&NAME’
ORDER BY 1, 2, 3
/

By: Maclean

Maclean — Sat, 02 Oct 2010 16:09:58 +0000

This is a normal behavior, but should be distinct!

By: Dion Cho

Dion Cho — Thu, 16 Sep 2010 10:04:24 +0000

Hi, Timur.

Yes, this is a normal behavior, which I didn’t expected. :(

Oracle could have implemented more fine-grained locking!

Thanks for the link.

By: Timur Akhmadeev

Timur Akhmadeev — Thu, 16 Sep 2010 09:02:01 +0000

Hi Dion,

So, this is not a normal situation, isn’t it?

It's normal behavior. See Doc ID 264476.1 for details.