To configure the recycling strategy of the AppDomains used for running job steps in a JES region: 
               	 
            
 
            	 
             
               		 
               		  
               - Open the region startup file using the 
                  			 Enterprise Server for .NET Administration UI's Region Startup File Editor. 
                  		  
               
- Select the 
                  			 Region node in the 
                  			 Results pane. A properties window is now displayed to the right-hand side of the 
                  			 Results pane. 
                  		  
               
- Locate the 
                  			 Recycling category in the properties window and select the 
                  			 Strategy property. If the property's 
                  			 Default value is selected, this will result in the AppDomain used to run a job's steps to be recycled at the end of each job. If
                  the property's 
                  			 Configurable value is selected, you can then additionally specify the time period after which the job steps AppDomain is recycled, or
                  whether the AppDomain is recycled after a region switch. If neither a time period nor a region switch are specified, the job
                  steps AppDomain will only be unloaded when a 
                  			 seesys -recycle|-phasein command is run. 
                  		  
               
- Click either 
                  			 File > Save, or the 
                  			 Save icon in the toolbar to save the file. 
                  		  
               
               
               		You must cold-start the region for the changes to take effect.