DB2 keeps crashing

Technote (troubleshooting)


Customer scenario:
DB2 crashes every couple of days. When the DB2 server is recycled, everything will work for a couple of days before it crashes again.


DB2 continually crashes.


TPC database corruption.

Diagnosing the problem

The following highlights some of the errors that are logged by DB2 causing database corruption. You might notice errors similar to the ones listed below being logged in the db2diag.log file:

This error may indicate index corruption and/or index or data inconsistency issues

RETCODE : ZRC=0x87040001=-2029780991=SQLD_BADPAGE "Bad Data Page"
DIA8500C A data file error has occurred, record id is "".


These are indications of log corruption, bad log records, or a bad page on disk

RETCODE: ZRC=0x86020019=-2046689255=SQLB_CSUM "Bad Page, Checksum Error"
DIA8426C A invalid page checksum was found for page "".


The CBIT error is indicative of (hardware errors) a potential disk issue

2007-07-09- I16992C16377 LEVEL: Severe
PID : 68098 TID : 1 PROC : db2agent (sample)
INSTANCE: instest NODE : 000 DB : sample
APPHDL : 0-635 APPID: *LOCAL.instest.070709082609
FUNCTION: DB2 UDB, buffer pool services, sqlbcres, probe:20
MESSAGE : Important: CBIT Error
DATA #1 : Hexdump, 4096 bytes

Resolving the problem

If database corruption is suspected, the recommendations are as follows:

1) Seek assistance from DB2 support team.
2) Restore the database from a known good database backup.

Cross reference information
Segment Product Component Platform Version Edition
Storage Management Tivoli Storage Productivity Center Basic Edition Windows, AIX, Linux All Editions

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Document information

More support for:

Tivoli Storage Productivity Center Standard Edition

Software version:

3.3.2, 3.4, 4.2.1, 4.2.2

Operating system(s):

AIX, Linux, Windows

Software edition:

All Editions

Reference #:


Modified date:


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