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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 FEBRUARY 14, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 11.1.0.6 to 11.2.0.2 [Release 11.1 to 11.2]
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
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/<RAC DB>/<RAC DB3>/trace/<RAC DB3>_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/<RAC DB>/<RAC DB3>/incident/incdir_2329/<RAC DB3>_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.

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References

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