ORA-29770 LMHB Terminates Instance as LMON Waited for Control File IO or LIBRARY CACHE or ROW CACHE Event for too Long (Doc ID 1197674.1)

Last updated on NOVEMBER 23, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 11.1.0.6 to 11.2.0.2 [Release 11.1 to 11.2]
Information in this document applies to any platform.

Symptoms

RAC instance crashes with messages like the following:

Wed Sep 09 03:24:14 2009
LMON (ospid: 31216) waits for event 'control file sequential read' for 88 secs.
Wed Sep 09 03:24:29 2009
Errors in file /oracle/base/diag/rdbms/prod/prod3/trace/prod3_lmhb_31304.trc  (incident=2329):
ORA-29770: global enqueue process LMON (OSID 31216) is hung for more than 70 seconds
Incident details in: /oracle/base/diag/rdbms/prod/prod3/incident/incdir_2329/prod3_lmhb_31304_i2329.trc
Wed Sep 09 03:24:39 2009
ERROR: Some process(s) is not making progress.
LMHB (ospid: 31304) is terminating the instance.
..
ORA-1092 : opitsk aborting process

OR:

Mon Jan 10 14:23:00 2011
LMON (ospid: 8594) waits for event 'control file sequential read' for 87 secs.
Mon Jan 10 14:23:31 2011
LMON (ospid: 8594) waits for event 'control file sequential read' for 118 secs.
ERROR: LMON is not healthy and has no heartbeat.
ERROR: LMHB (ospid: 8614) is terminating the instance.

Cause

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