Also review system log files, which are in the following location: <install path>\IBM\WebSphere\AppServer\profiles\AppSrv01\logs
To prevent data loss, back up the IBM® Rational® Asset Manager database, the asset storage location, and (if you used Installation Manager) the Rational Asset Manager installation location. Also consider backing up your IBM WebSphere® Application Server configuration.
You do not need to back up your indexes; Rational Asset Manager creates an index for you. Do not back up any /temp data.
Before you upgrade your system, perform the necessary back ups.
For detailed instructions on backing up and restoring your applications, see Backing up and restoring.
When you plan to upgrade your system, consider the path that your upgrade must follow. For example, do you plan to use IBM Installation Manager to install the media on your server, or do you plan to copy the media from other sources?
For more detailed information on upgrading see Upgrading from a previous version on WebSphere Application Server