If you are looking for a tool to view all db2diag messages in a user friendly interface, With all the messages catagorized by severity, With easy naviation and preview pane, With good sorting capability on time, severity, with ability to converge to a particular time frame. You will be interested in DB2Viewer which answers you all these questions. DB2Viewer is a tool that gives the ability to view db2diag.log file where the DB2 messages are stored.
DB2View can directly read the diag file in windows, but the diag file in unix and linux has to be copied manually to the XP desktop for viewing. DB2Viewer direct viewing of diag file on unix and linux is planned in future releases. Once messages are loaded, they are categorized by severity, can be sorted, converged to a time frame, navigate using preview pane. Version 2.1 can now be used for viewing notification logs (*.nfy) also in addition to viewing diagonistic data (db2diag.log).