The following parameters affect the timeout for forms over the web.
This parameter specifies the amount of time in elapsed minutes before the Form Services process is terminated when there is no client communication with the Form Services. Client communication can come from the user doing some work, or from the Forms Client "heartbeat" if the user is not actively using the form.
Forms 6i - FORMS60_TIMEOUT
Forms 9i - FORMS90_TIMEOUT
Forms 10.1.2.x or 11g - FORMS_TIMEOUT
Can be set in Forms Environment File (*.env)$ORACLE_HOME/forms/server/default.env.
SQLNET.EXPIRE_TIME=10 (10 minutes, for example). With this parameter in place, after 10 minutes of inactivity, the server send a small 10 bytes probe packet to the client. If this packet is not acknowledge, the connection will be closed and the associated resources will be released.
If someone's answer is helpful or correct please mark it accordingly.
Thank you very much for your valuable comment.
But is the FORMS_TIMEOUT parameter is only applicable for applications on WEB..(deployed in webserver) ??.
Our application works in a Citrix environment where the forms got installed in citrix server and is being used by a number of citrix clients...?.
And now users are complaining they have issues where form hangs.. and they virtually need to close the application and login again.
So does this parameter is relevant in this regard...??. Any ideas..??.
FORMS_TIMEOUT and heartbeat are only applicable via web-deployed forms. So if you are deploying C/S which I guess you are doing with citrix FORMS_TIMEOUT isn't applicable. Even if it were if you'd hit the limit you'd get a error "FRM-XYZ Unable to communicate with runtime process" as the forms runtime on would simply be terminated.
as for sqlnet.expire_time take a look here:
You'd get a ORA-3114 if you'd hit that limit. Of course if you'd hit the limit and have a infinite loop in your on-error trigger then this could be the problem ;)