RE: RAC CR REQUEST RETRY - Which node is holding the data block?
- From: Herring Dave - dherri <Dave.Herring@xxxxxxxxxx>
- To: "Christopher.Taylor2@xxxxxxxxxxxx" <Christopher.Taylor2@xxxxxxxxxxxx>, "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
- Date: Wed, 14 Nov 2012 16:49:02 +0000
Chris,
I've got a query I pulled from a paper by Riyaj Shamsudeen on DRM that may be
of use:
SET NUMWIDTH 10
COL kjblname2 FORMAT A22
COL kjblowner HEADING 'Inst Owner|of Block'
COL kjblmaster HEADING 'Inst Master|of Block'
COL fl FORMAT 99999
COL blk FORMAT A10
SELECT kj.*, le.le_addr
FROM (SELECT kjblname, kjblname2, kjblowner, kjblmaster, kjbllockp
, SUBSTR(kjblname2, INSTR(kjblname2, ',') + 1,
INSTR(kjblname2, ',' , 1, 2) -
INSTR(kjblname2, ',', 1, 1) - 1) / 65536 fl
, SUBSTR(kjblname2, 1, INSTR(kjblname2, ',') - 1) blk
FROM x$kjbl) kj
, x$le le
WHERE le.le_kjbl = kj.kjbllockp
AND (fl = <file# for block> AND blk = <block# in question>)
ORDER by le.le_addr;
The instance master keeps track of a block's state whereas the instance owner
has the actual block in it's cache.
DAVID HERRING
DBA
Acxiom Corporation
EML dave.herring@xxxxxxxxxx
TEL 630.944.4762
MBL 630.430.5988
1501 Opus Pl, Downers Grove, IL 60515, USA
WWW.ACXIOM.COM
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Christopher.Taylor2@xxxxxxxxxxxx
Sent: Tuesday, November 13, 2012 10:26 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: RAC CR REQUEST RETRY - Which node is holding the data block?
Setup:
10.2.0.4 64-bit
RHEL 3 node RAC
node1 is requesting blocks for a transaction - either node2 or node3 is holding
the block(s) that are being requested.
How can I determine which node(s) of the cluster are holding the requested
block(s)?
Regards,
Chris Taylor
Oracle DBA
Parallon IT&S
christopher.taylor2@xxxxxxxxxxxx<mailto:christopher.taylor2@xxxxxxxxxxxx>
www.parallon.net
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