Dear Amit,
Reason:
The hostname at line line of the db2nodes.cfg file in the sqllib directory is not valid.
Cause
It can be caused by incorrect permissions on /etc/hosts , /etc/services or incorrect or missing host name in the /etc/hosts file
Diagnosing the problem
Run ls -la on /etc/hosts and /etc/services. Must be readable for group and public (r--r--r--) .
Verify host name by running command 'hostname'
What is returned from the hostname command needs to reachable.
To test if your system's /etc/hosts file is properly configured, issue
following command:
ping <hostname>
If it fails, correct the /etc/hosts file so that the proper internet
address and corresponding hostname are included. For example:
192.168.1.101 myhostname myhostname.us.ibm.com
DB2 requires the system's hostname information in order to update the database manager configuration. If the /etc/hosts file is not properly configured, or the system files do not have the correct permissions the db2icrt command will fail when you attempt to create a new instance.
Resolving the problem
Resolve the problem by taking these steps:
1. Correct the permissions on the file /etc/host and /etc/services to 444.
2. Add proper ipaddress/hostname to /etc/hosts file.
Regards,
Varun.Ch
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