By default, ADDE commands timeout if they do not receive any data from the server for a period of 120 seconds. You can change the timeout period with the environment variable ADDETIMEOUT. To do so, enter the following Unix command (substitute the equivalent if using C shell), where numseconds is the number of seconds.
If you want to set the environment variable each time you log on to your account, add the command above to your $HOME/.mcenv file and add the following line to your $HOME/.profile (ksh) or $HOME/.cshrc (csh) file. Be sure to leave a space between the period (.) and $HOME.