Java Support Package Manager 
Caution
In SAP NetWeaver 7.2, the Software Update Manager (SUM) replaces the Java Support Package Manager.
SUM can reduce the downtime of your system maintenance procedure.
SUM is part of the Software Logistics Toolset delivery and available for download at: 
http://service.sap.com/swdc 
Support Packages and Patches A - Z Index “S”
SL TOOLSET SL TOOLSET 1.0 Entry by Component SOFTWARE UPDATE MANAGER (SUM) 
.
You can find its documentation on SAP Service Marketplace at: http://service.sap.com/sltoolset Software Logistics Toolset 1.0 SUM .
You can use the Java Support Package Manager (JSPM) to apply support packages on deployed software components. You can also deploy SAP and third-party software components to which you can then apply support packages and patches. You can deploy new business packages of SAP Business Suite. You can also upgrade and update business packages of SAP Business Suite that are deployed on the system to a higher release and support package level respectively. In addition, JSPM detects SAP software components that have been modified and allows you to apply support packages to them.
Integration
JSPM is integrated with the SAP NetWeaver Development Infrastructure (NWDI). JSPM detects SAP software components that have been modified and allows you to apply support packages to them.
Caution
The JSPM GUI might not work properly on some UNIX/Linux systems. For more information and the solution, see SAP Note 1013976
Features
JSPM has the following features:
Maintenance certificate
You can update SAP components only if you have a valid maintenance certificate. For more information see note 1236587.
Usability
Offers a simple and intuitive graphical user interface (GUI)
Shares common GUI with SAPinst and SAPJup
Automatically detects and offers you only components that can update deployed components
Shows only necessary information. Shows additional details at your request.
Deployed Component Overview
Displays support package level information
Support Package Level Administration checks whether a new software component version may correctly upgrade an existing software component version
NoteBesides Support Packages JSPM also supports Enhancement Packages.
End of the note.Development Component Level Administration
Checks deployment dependencies between development components
Update of Kernel Binaries, SAP JVM, Internet Graphics Server (IGS) and JSPM itself
Deployment
Allows you to apply a support package stack
Allows you to apply patches to software components
Allows you to apply hotfixes to development components
Allows you to update complete usage types
Activates new usage types
Allows you to deploy SAP and third-party software components
Allows you to deploy and upgrade business packages of SAP Business Suite
In NWDI development (DEV) and consolidation (CONS) systems, detects modified software components and transports them for deployment to NWDI
In NWDI test (TEST) and production (PROD) systems, detects and deploys modified software components
Informs you if restarting of AS Java is necessary during the deployment process
Offers a better support of the patch process in a distributed systems scenario
Monitors and logs the deployment process
Allows you to restart the deployment of support packages
At the end of a patch procedure, it offers a Java Support Package Manager Evaluation Form. The evaluation form contains important information about the patch procedure and allows you to provide feedback about your experience with JSPM. You can send the evaluation form to SAP to analyze your patch procedure and the errors that might have occurred. The evaluation form also helps SAP to improve the overall patch procedures.