MonetDB Read-Only without restarting the database

Hello,

This is regarding read-only mode in MonetDB. Can we mark the database read-only without restarting the database ? If Yes, How do we do it ?

What are the options available to copy a database without restarting to another node or DB Farm? Msqldump the export and import is serialized, How do I increase the performance of exp/imp?

Thank You, Gautham