It is not necessary to enable transaction logging on the log.nsf database. Therefore, you would like to have transaction logging set to disabled by default.
Beginning with Domino release 7.0.2, the notes.ini parameter LOG_DisableTXNLogging=1 is available. Setting this parameter to 1 ensures that transaction logging will be disabled by default when a new log.nsf is created.
SPR# YXIG6DEN4G - This fix enables the creation of log.nsf with transaction logging turned off when using the Notes.ini parameter "LOG_DisableTXNLogging=1".
This SPR is fixed in 7.0.2