Patent ID: 6983268

Claim:
A log analyzing method for analyzing log information output when a program is executed by a computer, comprising: a step for acquiring log information output if a program is executed to thereby read the acquired log information; a step for accepting a user designation condition indicative of a category and a level of log information which is extracted, the user designation condition including an application operation sequence for designating a category and a log level definition for designating the level of log information; a step for extracting information from the log information based upon said accepted user designation condition, and for judging as to whether or not each of operations while the program is executed can satisfy an initial condition thereof so as to analyze a cause of an error occurred while the program is executed; a step for providing a result of error cause analysis to a user; a step for providing an improvement rule used to improve said error, wherein the improvement rule is provided based on an analysis result of the log information; and a step for comparing the analysis result of the log information with the improvement rule for an improving method for the program if the error occurs.