What does error "Namekey conflict with lock-file /tmp/SQLDIR.LK0. Trying another lock" mean?
Error in the db2diag log file:
2014-08-27-06.02.04.648053-300 I1179182E582 LEVEL: Error
PID : 9486 TID : 139909847312128 PROC : db2sysc 0
INSTANCE: db2inst1 NODE : 000 DB : SAMPLE
APPHDL : 0-20305 APPID: *LOCAL.db2inst1.140827110204
AUTHID : DB2INST1
EDUID : 23802 EDUNAME: db2agent (SAMPLE) 0
FUNCTION: DB2 UDB, buffer pool services, sqlbLockAllDirs, probe:910
MESSAGE : ZRC=0x800F00AD=-2146500435=SQLO_NLCK_NAMEKEY_CONFLICT
DATA #1 : <preformatted>
Namekey conflict with lock-file /tmp/SQLDIR.LK0. Trying another lock.
The SQLDIR.LK0 file is used by DB2 to serialize access to all the filesystems when creating/deleting directories.
It only can be deleted while the instance is down (and *only* when the instance is down). However, as a general rule, we should not need to access/modify/delete the directory anyway.
This can usually occur after an installation or upgrade fails to clean up the SQLDIR.LK0 file from the /tmp directory.
Resolving The Problem
1. Bring down all DB2 instances on the server.
2. Check the /tmp directory for the SQLDIR.LK0 file. Remove the file if it exists in the directory .
3. Bring the instance back up and monitor to see if the error comes back.
16 June 2018