Informix Error -25595: Invalid message received during connection attempt.

Cause and resolution

Invalid message received during connection attempt.

An error occurred when you tried to connect to the desired database server.

If you are using IBM Informix Dynamic Server, IBM Informix Universal Server, or IBM Informix OnLine Dynamic Server, verify that the database server is still online. If you are using IBM Informix SE, verify that the sqlexecd daemon for the database server is still running. Also, verify that the $INFORMIXDIR/etc/sqlhosts file entry for the database server is correct.

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-25595 fires when an invalid message is received while connecting to a database server — per the official guidance.

The target database server being offline (on IBM Informix Dynamic Server/Universal Server/OnLine Dynamic Server), per the official guidance — the first named case.
The sqlexecd daemon not running (on IBM Informix SE), per the official guidance — the second named case.
An incorrect $INFORMIXDIR/etc/sqlhosts entry for the server, per the official guidance — the third named case.

Solutions / Resolution

Verify the database server is online, per the official guidance, on Dynamic Server/Universal Server/OnLine Dynamic Server.
Verify the sqlexecd daemon is running, per the official guidance, on Informix SE.
Verify the sqlhosts entry for the server is correct, per the official guidance.

Examples

N/A

No specific triggering statement is documented beyond an invalid connection-attempt message.

Diagnostic Checks

Check the server's online status (or sqlexecd's on Informix SE), and the sqlhosts entry.

Related Errors / Related Topics

No closely related error codes are cross-referenced for -25595 in this set yet.

An invalid message was received while connecting — check the server's online status and its sqlhosts entry.