Hi,
on DB2 v9.5 for Linux. DB2 was working well as locally as remotely. But something has changed and db2set command does not display DB2COMM parameter that is required to access db2 remotely. Locally DB2 works fine without any error.

So I tried to execute command:
and got error:
=========
DBI1309E System error.

Explanation:

The tool encountered an operating system error.

User response:

A system error was encountered during registry access. Ensure that there
is enough space on the file system where the registry is located, and
that there is a valid LAN connection if the registry is remote.
=========

I have checked disk is not full and computer can be accessed by ping command locally and remotely.

Any idea what is wrong?
Thanks,
Grofaty

See if ~/sqllib/profile.env is accessible to the instance owner and not corrupted (it should be a regular ascii text file).

I tried this command from the db2inst1 user, but it only seemed to work for me when I was root. (The profile.env file was fine.)