You can specify several different types of time-outs that affect licensing.
Client-Server
On a busy network or if the license server is busy with other tasks or with a large number of application clients, products are not able to check licenses out when the connection to the license server times out before the server can return a result to the client.
You can increase this time limit by specifying the number of seconds in which to time out between client workstation and license server. Use the environment variable CDS_LIC_TIMEOUT. The default is 10 seconds. There is no minimum or maximum.
For example, to have a connection between the application client and the license-server time-out if you have not received a response within three minutes, add this line to the user's ~/.cshrc.
setenv CDS_LIC_TIMEOUT 180
Idle Client
You can specify the maximum amount of time that an application can run without some activity before returning licenses to the license pool. All applications should support this time-out.