MUC Conversation logs

I’ve created a Group chat with Log Room Conversations box checked. I see that records are being saved to table ‘mucConversationLog’ - my question is twofold:

1- How long are these records kept in the database - is it possible to keep them indefinetely?

2- Is there anyway for an admin to access these log file from a client such as Spark (or other clients) or the web-based Openfire admin console?

Many thanks

Jean