Hi guys,
I have 10 partitions in 10 different tablespaces. Only the current partition is being loaded.
I tried to put the tablespace containing the oldest partition into read only mode but it's taking a long time(45 minutes). So I cancelled the operations. I can swear that no object in that particular tablespace is being loader,deleted,updated,etc, so I don't understand why changing the tablespace to read only is taking a long time.

Any idea what's happening?