The COBOL I/O Error 94,67 indicates that the operating system is not configured to allow large file support.  In this case, your operating system is, probably, configured with large file support, but, the user account that is executing the Relativity Data Server may not be.  You can control a user's ability to manipulate large files with the "ulimit -f" command.

You can determine which user account the Relativity Data Server runs as by looking at the Relativity entry in inittab(/etc/inittab).  

Below is a sample Relativity Data Server entry in /etc/inittab:

rs:345:respawn:su - user -c "/u/Relativity/RUNACTIVE -w"

In this entry, the Relativity Data Server process is running as the user "user".  Therefore, to resolve this issue, you could try either increasing the file size for the user account, "user", with the "ulimit -f" command, or, you could switch the user account to an account with a higher file size limit, like "root".

For example:

rs:345:respawn:su - root -c "/u/Relativity/RUNACTIVE -w"

Let me know if you have any questions, or, this does not resolve the error that you are encountering.