Informix Error -725: Error occurred while reading system initialization file $INFORMIXDIR/cnv50t60.sql.

Reasons / Common Causes

-725 is the read-failure counterpart to -724: it fires when $INFORMIXDIR/cnv50t60.sql is found but can't actually be read — per the official guidance, a permissions problem is the implied first check, with reinstallation as the fallback.

1. cnv50t60.sql present but not readable by the server's OS user, per the official guidance's implied check — a permissions or ownership problem.
2. File corruption preventing a successful read even with correct permissions.

Solutions / Resolution

1. Check that the script file is readable, per the official guidance:

   ls -l "$INFORMIXDIR/cnv50t60.sql"
   

   confirm the server's OS user has read permission.
2. If it's readable but the failure still occurs, reinstall the product, per the official guidance — this points to file corruption or a deeper installation problem.

Examples

Checking readability

$ ls -l "$INFORMIXDIR/cnv50t60.sql"
-r--------  1 root root ...  cnv50t60.sql

If the server runs as a different OS user (typically informix) and no permission bit grants it read access, that's the fix target.

Diagnostic Checks

1. Check the file's permissions and ownership against the server's OS user.
2. If permissions are correct, suspect file corruption and proceed to reinstallation.

Related Errors / Related Topics

• -724 — "System initialization file $INFORMIXDIR/cnv50t60.sql is missing." The related, earlier-stage failure: the file not being found at all, rather than found but unreadable.

The read-failure counterpart to -724 — check permissions first, then consider reinstallation if those look correct.