The database server is reporting evidence of corruption of the database. Each disk page has time stamps at each end that should be identical when the page is read from disk. This test of data integrity has failed, indicating either that a disk page was not fully written to disk or that one has been partially overwritten on disk or in memory. In any case, you should roll back the current transaction and terminate the application. Then notify the database server administrator, who should run the tbcheck, oncheck, or onutil utility to get more information about the failure.