Hi Stanley, Yes, I got "out of memory" error from my program (client program which uses Derby's jdbc driver). No such error from Derby itself.
My program can work with different databases, so I switched to Oracle (by changeing parameters using oracle's jdbc driver talking to oracle database, my program does not change). Then there is no such error. I used jbuilder to detect memory leak and found there a lot of objects of LinkedList make memory grow. I did not see such objects when I use oracle's jdbc driver to talk to oracle database. I have a nother comment here, please forwad it to the right person: The Derby's mailing list is very inconvenient for my: I can not reply to a post from viewing the archive. Derby' mailing list requires a registered email address (some others mailing lists do as well). I had to give an email address. So I use a never-read email address. That email address gets many many emails. I do not read that email box. When I need to read the archive, I have to copy and paste, then... to reply an email. I hope the mailing archive will be more user friendly. I also hope the new feature (if any) will not requier me to install or use other software. I have Derby's issue from time to time, not every day. Thanks. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Subject: Re: Momory leak in JDBC driver? Date: Sun, 04 Sep 2005 17:12:20 GMT Raw Message Prev Next Prev by Thread Next by Thread Hi Wei Jiang - Are you encountering Out Of Memory Exceptions? How much physical memory is on your test machine and how large is the heap getting? I've worked with Cloudscape / Derby for four years and have not seen a memory leak in the JDBC driver, of course, it's always possible that new bugs are introduced with new releases. We'd like to investigate the problem. Please post a description of your observations along with your test case here and we'll take a look at the problem. Wei Jiang wrote: >Hi, > >I tried Derby using the default JDBC driver and found memory leak. When I use >Hsql or Oracle, I do not have such leak. So probably it is the JDBC driver. > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
