[xwiki-users] How to reduce database size?

Hello, we run a small XWiki Enterprise (now V1.6.1) in the out-of-the-box HSQL / jetty version. Actually it's not so small anymore and the HSQL database file grew to a size of 1,4 GB. This size doesn't represent the actual size of the attachments stored in the XWiki, it's much, much bigger. So I guess there is a lot of space wasted by old versions and other unwanted stuff maybe left there as the results of several XWiki version upgrades. Is there any safe way to clean-up the database? Which tables could be emptied? I can live with losing all the versioned attachments and pages. Due to limited Java heap size we already get OutOfMemory exceptions when trying to delete bigger attachments or export some bigger pages. And the heap size is 1500 MB at the moment which is almost the maximum size available. Any ideas? Thanks! Bye, Jan Euler Hermes is the world's premier credit insurer, offering solutions for the management of trade receivables, from credit insurance and financing of trade receivables to bonding and guarantees. Euler Hermes is a subsidiary of AGF and a member of Allianz. www.eulerhermes.com ------------------------------------- This e-mail may contain confidential and/or privileged information. If you are not the intended recipient or have received this e-mail in error, notify the sender immediately and destroy this e-mail. Any unauthorised use, copying, disclosure or distribution of the contents of this e-mail is strictly forbidden and may be unlawful. Read our full e-mail disclaimer statement and monitoring policy (http://www.eulerhermes.com/group/en/disclaim/index.html) before taking any action based on the contents of this e-mail.