An operating-system error code with the meaning shown was unexpectedly returned to the database server. An error exists in a file server on a networked file system. Although IBM Corporation Informix database servers do not support database access to NFS-mounted file systems, this error can occur when the database server executable files or other files that are related to the database server are located on an NFS-mounted disk. (In other words, the INFORMIXDIR environment variable names an NFS-mounted disk.) The error is usually transient, reflecting a crash and subsequent restart of the file server. Remount the file system to your workstation and rerun your application.