Informix Error -25560: Environment variable INFORMIXSERVER must be set.

Cause and resolution

Environment variable INFORMIXSERVER must be set.

The INFORMIXSERVER environment variable must specify a default database server. Use a setenv command in C shell or a set command in Bourne shell to set INFORMIXSERVER.

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-25560 fires when INFORMIXSERVER isn't set — per the official guidance, it must specify a default database server.

INFORMIXSERVER unset, per the official guidance — the direct, only cause.

Solutions / Resolution

Set INFORMIXSERVER to a default database server, per the official guidance — setenv in C shell, or set in Bourne shell.

Examples

Setting INFORMIXSERVER

$ export INFORMIXSERVER=ol_myserver   # Bourne/bash
$ setenv INFORMIXSERVER ol_myserver   # C shell

Diagnostic Checks

Check whether INFORMIXSERVER is set in the current shell/environment.

Related Errors / Related Topics

-25554 — "INFORMIXSERVER environment variable too long." A related INFORMIXSERVER error, on an oversized value rather than a missing one.

INFORMIXSERVER wasn't set — set it to a default database server name.