The ISAM processor was called for a function that requires a transaction log, but none exists for this file. For C-ISAM programs, review the creation of the data file. Before the program uses functions such as isbegin, it must set up a log using islogopen. For SQL products, this database does not support transaction logging. If you are using the database server, have the database server administrator enable logging for this database. Otherwise, use the START DATABASE statement to begin transaction logging. In all cases, start logging only immediately after the database has been fully backed up.