|
Problem IT09555
|
Status: Closed |
FAILED ONLINE BACKUP CAN LEAD TO MEMORY CORRUPTION AND TRAP [SQLBPFCLOSEPARALLELIO()] |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
An online backup using parallelism can lead to memory corruption
if it fails.
The corruption can be detected much later as this will actually
overwrite the
memory free block header of a block that the archive the freed.
A typical stack would be:
[0] 0x0900000010556A84 pdLog + 0xF4
[1] 0x0900000011F8CDC8 diagnoseMemoryCorruptionAndCrash +
0x290
[2] 0x0900000011F8CA60
diagnoseMemoryCorruptionAndCrash@glue7F8 + 0x7C
[3] 0x090000001036ED44 .MemTreePut.fdpr.clone.45 + 0x10
[4] 0x090000001036888C sqlofmblkEx + 0x268
[5] 0x0900000012C53454 sqlbpfCloseParallelIO + 0x74
[6] 0x0900000012C7471C sqluBMTerm + 0x164
[7] 0x09000000119A4708 sqlubbuf + 0x2F8
[8] 0x0900000011363F5C sqleSubCoordProcessRequest + 0x1F4
[9] 0x090000001082BCA8 RunEDU + 0x1A8
Some possible online backup errors triggering this could be a
read error
A typical db2diag.log error would be:
2015-05-27-12.32.36.111563+000 I597141A1347 LEVEL: Error
PID : 14221634 TID : 74620 PROC :
db2sysc 0
INSTANCE: db2inst NODE : 000 DB :
TESTDB
APPHDL : 0-55915 APPID: LOCAL
AUTHID : PCHADM
EDUID : 74620 EDUNAME: db2bm.72871.0 (PCH) 0
FUNCTION: DB2 UDB, oper system services, sqloReadVLow,
probe:100
MESSAGE : ZRC=0x870F0009=-2029060087=SQLO_EOF "the data does
not exist"
DIA8506C Unexpected end of file was reached. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* DB2 V9.7 FP 10 and below *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 V9.7 Fixpack 11 *
**************************************************************** |
| Local Fix: |
|
| Solution |
First fixed in DB2 V9.7 Fixpack 11 |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 18.06.2015
12.10.2015
12.10.2015 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP11
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.11
|
 |
