RE: Rollback waiting on 'cache buffer chains' latch

From: <oracle-l-bounce_at_freelists.org>
Date: Wed, 10 Jan 2007 13:22:47 -0700
Message-ID: <04DDF147ED3A0D42B48A48A18D574C45059E27AD@NT15.oneneck.corp>

Thanks for the links and other info. That's weird that it would be waiting on a RAC-related latch since we are not running RAC:

SQL> select * from v$option where parameter like '%Cluster%';

PARAMETER                                          VALUE


-------------------------------------------------- ---------

Real Application Clusters                          FALSE

We actually took 3 system state dumps and all 3 show that PMON was waiting on this same latch:

last wait for 'latch free' blocking sess=0x0 seq=10565 wait_time=9782

address=700000104b55a70, number=62, tries=0

last wait for 'latch free' blocking sess=0x0 seq=10570 wait_time=9780

address=700000104aa4980, number=62, tries=1

last wait for 'latch free' blocking sess=0x0 seq=10574 wait_time=9778

address=700000104aa4980, number=62, tries=1

That block belongs to an index on one of the Baan application tables:

SQL> select owner, segment_name from dba_extents where file_id=58 and 486504 between block_id and block_id+blocks-1; OWNER SEGMENT_NAME

BAAN TTDINV700100$IDX2 Thanks,
Brandon

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http://www.freelists.org/webpage/oracle-l Received on Wed Jan 10 2007 - 14:22:47 CST

RE: Rollback waiting on 'cache buffer chains' latch - SOLVED