Informix JDBC login fails, local login succeeds I'm troubleshooting a "sudden" issue on our somewhat old Informix server (11.50.UC9GE). After years of running without issue (and connecting w/o issue), suddenly today we can't connect to the server remotely.

When I use dbaccess locally on the server and choose a connection method that prompts for username / password, the credentials work fine and I'm able to establish a connection. (note I can also intentionally enter invalid credentials and it will fail). This leads me to believe that the basic credentials I have are fine / unchanged.

However, when we try to connect to the server remotely (via a JDBC driver in DB Visualizer), we get this error:

An error occurred while establishing the connection:

Long Message:
Incorrect password or user com.informix.asf.IfxASFRemoteException: informix@ip-10-15-45-226.ec2.internal[MacBook-Pro.local] is not known on the database server.

Details:
   Type: java.sql.SQLException
   Error Code: -951
   SQL State: IX000


Up until today, this has always worked for us - any thoughts on what to check?
Ultimately an Informix restart solved the issue.