21 Nov
2007
21 Nov
'07
5:17 p.m.
On Nov 21, 2007, at 5:02 PM, goldring, richard wrote:
Hi,
I had my xwiki linux pc crash on me during a powercut and the HSQLDB
database seemed to revert to content that was on the xwiki several
weeks ago.
What's happened? Does hsqldb store data in memory and that is why
the data has got lost when the power went? I thought it stored the
data in xwiki_db.script? Anyone?
It depends how you configured HSQLDB. AFAIK xwiki configures it by
default to store to files and not in memory... Now it probably has a
cache for performance reasons but several weeks of data loss looks
like another issue. I'd recommend talking to the HSQLDB guys on their
forums/mailing list. They're the best to know how to fix this I think.
We also recommend making regular backups of your database same as you
would backup any of your personal files. For HSQLDB it's especially
easy since you just have to save a directory. I know, it's too late
now for you but if that can help others...
Thanks
-Vincent