Disabling application server ping mechanism
 Technote (FAQ)
 
Problem
Under some circumstances it is necessary to disable the ping mechanism to avoid a restart of the Application Server even when the server is unresponsive.

Note: Under normal circumstances, it is not advisable to disable the ping mechanism.
 
Solution

About Ping Mechanism

Each application server sends a ping signal to the administrative server or nodeagent according to the Ping Interval set for that server. The administrative server or nodeagent waits for the ping signal from each Application Server according to the settings and if a ping signal is not sent according to the Ping Timeout value, the administrative server or nodeagent assumes that the Application Server has become unresponsive and tries to restart the Application Server.

For some applications, the default value(200 sec for V4 and 300 sec for V5 & V6) for Ping Timeout might be too small. In such cases, tune this value to avoid an unnecessary restart of application servers.

Disabling the ping mechanism

For V4

In the administrative console, go to the Advanced tab of the Application Server, and specify the Ping Interval as 0 seconds to disable the ping mechanism.

For V5

In the Administrative console, click Servers -> Server_Name -> Process Definition -> Monitoring Policy, and specify Ping Interval as 0 seconds to disable the ping mechanism.

For V6

n the Administrative console, click Servers -> Server_Name -> Java and Process Management -> Monitoring Policy, and specify Ping Interval as 0 seconds to disable the ping mechanism.

By setting Ping Interval to 0, the administrative server or nodeagent does not communicate with the Application Server to verify if the server is running.

 
 
 


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server > Administrative Console (all non-scripting)
Operating system(s): HP-UX
Software version: 4.0
Software edition:
Reference #: 1168331
IBM Group: Software Group
Modified date: May 26, 2005