|
Problem IC76890
|
Status: Closed |
First db2start may fail with SQL1042 after reboot on RHEL6 system |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
On Linux RHEL6 64b machine , db2start might fail with SQL1042 .
The inspection of db2diag.log shows up the following error
messages:
2011-03-16-08.33.34.866971-240 I9773E357 LEVEL: Severe
PID : 31293 TID : 140328380831520PROC :
db2star2
INSTANCE: db2inst1 NODE : 000
FUNCTION: DB2 UDB, base sys utilities, DB2StartMain, probe:580
MESSAGE : ECF=0x900003DE=-1879047202=ECF_TRCAPI_MUTEX_LOCK_ERROR
Trace facility mutex unexpected lock error
Additional background about the error: The problem occurs
because RHEL6 has low default IPC kernel parameters. During
starting an instance, on Linux db2 increases the required IPC
kernel parameters , but this increase occurs relatively late in
the startup cycle and doesn't affect all created IPC resources .
The second attempt to start an instance uses the new increased
the IPC kernel parameters and it fixes the issue. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* Linux 64b only , RHEL6 in particular *
****************************************************************
* PROBLEM DESCRIPTION: *
* On Linux RHEL6 64b machine , db2start might fail with *
* SQL1042 . *
****************************************************************
* RECOMMENDATION: *
* The second attempt to start the instance should fix the *
* issue *
**************************************************************** |
| Local Fix: |
Several fixes are possible:
a. Before starting up an instance , preset SHMMAX kernel
parameter to 256MB
b. A second attempt of db2start would fix the issue |
| available fix packs: |
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows
|
| Solution |
|
| Workaround |
not known / see Local fix |
| BUG-Tracking |
forerunner : APAR is sysrouted TO one or more of the following: IC76895
follow-up : |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 09.06.2011
27.03.2012
27.03.2012 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.5
|
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