Dear cschneider Thanks to your advice, we could delete data.db safely.
I found that activemq.xml had a parameter which limits the cache size. Is the parameter below perhaps for db.data? Or is it different from the limit for db.data because it explains that "cached in memory." ------------ http://activemq.apache.org/kahadb.html indexCacheSize 10000 Number of index pages cached in memory. ------------ I would appreciate if you know activemq has a parameter to limit the size of data.db and tell me it. Anyway, you are my ActiveMQ teacher. I understand ActiveMQ more than before thanks to you. Kawai -- View this message in context: http://activemq.2283324.n4.nabble.com/The-size-of-KahaDB-doesn-t-seem-to-decrease-tp4723669p4723835.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.