IBM Support

DB2 Panic due to IPC resources removed



DB2 may crash if critical IPC resources removed by other commands or OS


In case critical IPC resources are removed, DB2 may crash and FODC_Panic may be generated.

As an example, see the following messages in db2diag.log which eventually lead to DB2 panic.
<timestamp>        LEVEL: Severe (OS)
PID     : 12345                TID : 12345 PROC : db2sysc 0
INSTANCE: db2inst1             NODE : 000
EDUID   : 12                   EDUNAME: db2thcln 0
FUNCTION: DB2 UDB, oper system services, sqloWaitEDUWaitPost, probe:100
MESSAGE : ZRC=0x8300002B=-2097151957

CALLED  : OS, -, semop                            OSERR: EIDRM (43)
DATA #1 : timeout value, 4 bytes


The above error indicates the critical IPC resource has been removed by external commands,
typically by OS, or cluster managing software etc. This caused various
EDUs in db2 to abort and lead to DB2 panic eventually.

Diagnosing The Problem

Search in OS log for related messages that cause the above error.

Resolving The Problem

Consult with OS Administrator why IPC resource is removed.

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Document Information

Modified date:
16 June 2018