问题已经解决：通过db2iupdt更新instance.
现场： 在deactivate db/db2stop 后，重新启动遇到下列问题
我个人认为：问题的关键点是：
Primary group id of DB2INSTANCE does notmatch effective primary group id of process.
DB2 应该使用了某种checksum 来做校验。
我尝试使用truss追踪（db2trc 对本情况无用），只有下面的内容 无任何有效信息，
我的问题是 如果以后遇到这样的问题， 我该用何种方法做追踪或者如何验证我的观点？
谢谢赐教。
：
execve("/usr/bin/db2start", 0x2FF22688, 0x200138A8) Err#2 ENOENT
execve("/etc/db2start", 0x2FF22688, 0x200138A8) Err#2 ENOENT
execve("/usr/sbin/db2start", 0x2FF22688, 0x200138A8) Err#2 ENOENT
execve("/usr/ucb/db2start", 0x2FF22688, 0x200138A8) Err#2 ENOENT
execve("/db2/SS4/db2ss4/bin/db2start", 0x2FF22688, 0x200138A8) Err#2 ENOENT
execve("/usr/bin/X11/db2start", 0x2FF22688, 0x200138A8) Err#2 ENOENT
execve("/sbin/db2start", 0x2FF22688, 0x200138A8) Err#2 ENOENT
execve("./db2start", 0x2FF22688, 0x200138A8) Err#2 ENOENT
execve("/usr/sap/SS4/SYS/exe/nuc/rs6000_64/db2start", 0x2FF22688, 0x200138A8) Err#2 ENOENT
execve("/usr/sap/SS4/SYS/exe/run/db2start", 0x2FF22688, 0x200138A8) Err#2 ENOENT
execve("/db2/SS4/db2ss4/db2start", 0x2FF22688, 0x200138A8) Err#2 ENOENT
execve("/db2/SS4/db2ss4/sqllib/db2tss/bin/db2start", 0x2FF22688, 0x200138A8) Err#2 ENOENT
execve("/db2/SS4/db2ss4/sqllib/bin/db2start", 0x2FF22688, 0x200138A8) Err#2 ENOENT
>db2start
SQL1390C The environment variableDB2INSTANCE is not defined or is invalid.
02/26/201608:00:39 0 0 SQL1390C Theenvironment variable DB2INSTANCE is not defined or is invalid.
SQL1032N No start database managercommand was issued. SQLSTATE=57019
db2diag.log
2016-02-26-07.59.02.084890+060I4041A706 LEVEL: Severe
PID :18547154 TID :1 PROC : db2star2
INSTANCE:db2ss4 NODE : 000
HOSTNAME: arlqsap02
EDUID : 1
FUNCTION: DB2 UDB, base sys utilities,DB2StartMain, probe:2885
MESSAGE : ZRC=0xFFFFFA92=-1390
SQL1390C The environment variable DB2INSTANCE is not defined or is
invalid.
DATA #1 : String, 84 bytes
Primary group id of DB2INSTANCE does notmatch effective primary group id of process
DATA #2 : String, 28 bytes
DB2INSTANCE primary group id
DATA #3 : Group id, 4 bytes
5148
DATA #4 : String, 42 bytes
Effective primary group id of thisprocess
DATA #5 : Group id, 4 bytes
5264
收起