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Streams Hangs After ORA-07445 [ksrconsume] Core Dump and Repeated Alert Log Messages "Pmon Failed To Acquire Latch, See Pmon Dump" (Doc ID 787960.1)

Last updated on MARCH 06, 2019

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 10.2]
Information in this document applies to any platform.
Oracle Server Enterprise Edition - Version: to


In a 10.2 Streams environment, it is observed that no messages are flowing after errors similar to the following are reported in the alert log:

Fri Jan 30 12:10:57 2009
Errors in file <trace_file_location>:
ORA-07445: exception encountered: core dump [ksrconsume()+772] [SIGFPE] [Integer divide by zero] [0x1005E5944] [] []

Looking in orcl_j001_23372.trc, we see:

ksedmp: internal or fatal error
ORA-07445: exception encountered: core dump [ksrconsume()+772] [SIGFPE] [Integer divide by zero]
[0x1005E5944] [] []
Current SQL statement for this session:
DECLARE job BINARY_INTEGER := :job; next_date DATE := :mydate; broken BOOLEAN := FALSE; BEGIN next_date :=$_propaq(job); :mydate := next_date; IF broken THEN :b := 1; ELSE :b := 0; END IF; END;

Also, messages similar to the following are written repeatedly to the alert log:

Fri Jan 30 12:44:16 2009
PMON failed to acquire latch, see PMON dump

From the PMON dump:

PMON unable to acquire latch 4f0bbbe70 Child channel operations parent latch level=5 child#=59
Location from where latch is held: ksrsconsume():
Context saved from call: 21218704936
state=busy(exclusive) (val=0x2000000000000466) holder orapid = 1126

Querying v$process shows that orapid 1126 is theOraclePID for the job queue process that is running the propagation referenced in the ORA-07445 [ksrconsume] trace file orcl_j001_23372.trc (J001):

select program from v$process where pid = 1126;

Killing the job queue process (orapid 1126) does not resolve the problem, nor does disabling / re-enabling or dropping / recreating the propagation job.




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