DB2 V9.7 on linux : Single partitioned environment.

When I try to create an instance, this is what the error I get. Can someone please provide me an insight as to what is hapening.

DBI1281E The database manager configuration file could not be
initialized.

Explanation:

An error occurred when attempting to initialize the database manager
configuration file. A DB2 instance could not be created or upgraded.

User response:

Refer to the log file for troubleshooting. Resolve the problem and try
the command again. If the problem persists, contact your IBM service
representative.


DBI1079I Output is saved in the log file /tmp/db2icrt.log.16582.

Explanation:

All processed and failed operations have been saved into this log file.

User response:

Do not modify this file in any way. This file is for IBM Technical
Support reference.


/opt/ibm/db2/V9.7/instance/db2iutil: line 2526: DB2INSTVER: parameter null or not set

Information in /tmp/db2icrt.log.16582

Program name = db2idbm
Instance home dir = /db2udb/twhdv00, Sysadm group = unixuser
Instance type = 1, Auth type = SERVER

DB21018E A system error occurred. The command line processor could not
continue processing.
Update DBM cfg SYSADM_GROUP errcode = 8
DBI1281E The database manager configuration file could not be
initialized.

Explanation:

An error occurred when attempting to initialize the database manager
configuration file. A DB2 instance could not be created or upgraded.

User response:

Refer to the log file for troubleshooting. Resolve the problem and try
the command again. If the problem persists, contact your IBM service
representative.


DBI1079I Output is saved in the log file /tmp/db2icrt.log.16582.

Explanation:

All processed and failed operations have been saved into this log file.

User response:

Do not modify this file in any way. This file is for IBM Technical
Support reference.

seen this problem before. just to indicate dbm has not been updated with SYSADM_GROUP
it is possible the instance owner has no primary group
no problem - go to instance and update dbm cfg using SYSADM_GROUP xxx
this will correct the problem

Instance owner has the primary group. I can't even run a db2 command. Instance doesn't start at all.

I've ran into similar problem when a local host's name has not been entered as an alias to the localhost entry in the /etc/hosts file. Check that.