Assuming no one has resized your logs, and no one is switching them manually (you can tell if they're not full size), then the increased switching is caused by more redo being written to your online logs, which is probably being caused by an increase in DML activity, e.g inserts, updates, deletes, refreshing materialized views, etc. Regards, Brandon ________________________________ Privileged/Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it.