DB2 - Problem description
| Problem IT00613 | Status: Closed |
DB2VEND PROCESS CAN FAIL TO ATTACH SERVER (DATABASE MEMORY SET) SHARED MEMORY SEGMENT (SQLO_ADDR_CONFLICT IN DB2DIAG.LOG) | |
| product: | |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 | |
| Problem description: | |
In some cases the db2vend process might fail to attach server
shared memory segments that belong
to the database memory set. Messages like the following will
appear in the db2diag.log file:
2013-03-11-11.31.34.862818-240 I89558391A1173 LEVEL:
Warning (OS)
PID : 2622752 TID : 1 PROC :
db2vend
FUNCTION: DB2 UDB, SQO Memory Management, sqlocshr, probe:210
MESSAGE : ZRC=0x850F00C4=-2062614332=SQLO_ADDR_CONFLICT
"An address space conflict was detected attaching to
shared memory."
CALLED : OS, -, shmat
OSERR : EINVAL (22) "Invalid argument"
DATA #1 : Memory set handle, PD_TYPE_OSS_MEM_SET_HDL, 48 bytes
This will happen only in a few cases where the db2vend stays
alive long enough for the database server to grow the database
memory set with a few additional shared memory segments. The
problem here is that the db2vend will somehow try to attach
again a segment it already attached at that given address. Note
that to differentiate this from a genuine error a
truss/trace/strace... would show that the db2vend is trying to
shmat() a segment with segid ID at address ADDR but a pmap would
already show that same segment with segid ID attached at address
ADDR.
When that problem occurs, if the db2vend stays alive long enough
multiple occurrences of this message will appear in the
db2diag.log. | |
| Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * ALL * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to DB2 Version 9.7 FP10 * **************************************************************** | |
| Local Fix: | |
Deactivate/Activate database. | |
| Solution | |
First Fixed in Version 9.7 FP10 | |
| Workaround | |
not known / see Local fix | |
| Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified : | 26.03.2014 10.11.2014 10.11.2014 |
| Problem solved at the following versions (IBM BugInfos) | |
9.7.FP10 | |
| Problem solved according to the fixlist(s) of the following version(s) | |
| 9.7.0.10 |
|