Clay,
Thanks! That sounds like an easy enough enhancement to make. I'll make it a point to keep an eye on the sessions table until then, and remind my coworkers to logout properly. Cheers, -Ian From: koha-devel-boun...@lists.koha.org [mailto:koha-devel-boun...@lists.koha.org] On Behalf Of Clay Fouts Sent: Wednesday, February 17, 2010 2:04 PM To: Koha-devel Subject: Re: [Koha-devel] Koha sessions table is ridiculously huge You can also use "truncate sessions" to do the job if you just want to clear out the contents of the table. It's faster and simpler than using mysqldump. This issue arises from the fact that the way Koha is written, if a user just walks away from a session without logging out, their session data will hang out in the the sessions table forever. A proper solution would involve adding a timestamp column to the sessions table, enabling one to cull only expired sessions entirely within SQL statements. With the current schema, you'd have to parse the contents of each row within a user program, then cull based on the expiry contained within the session data itself. Cheers, Clay 2010/2/17 Walls, Ian <ian.wa...@med.nyu.edu<mailto:ian.wa...@med.nyu.edu>> Developers, After performing a software upgrade and server reboot, I came across this problem. My koha.sessions table is over 13 million entries. This seems to indicate that entries into the table were never removed, and that may help to explain why my backup mysqldumps are increasing by around 4MB daily. Chris Cormack suggested that I do a mysqldump of sessions with the no-data option set, then reimport it into the database to clear it out. I've finally gotten sessions to tell me what indexes it has on it, so that can be recreated as well. Are there any risks to doing this that I'm not factoring in? More generally, what could be causing my sessions table to get so out of hand? Permissions, perhaps? Something in the code being off? Any ideas or feedback would be appreciated. Thanks! Ian Walls Systems Integration Librarian NYU Health Sciences Libraries 550 First Ave., New York, NY 10016 (212) 263-8687 ------------------------------------------------------------ This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain information that is proprietary, confidential, and exempt from disclosure under applicable law. Any unauthorized review, use, disclosure, or distribution is prohibited. If you have received this email in error please notify the sender by return email and delete the original message. Please note, the recipient should check this email and any attachments for the presence of viruses. The organization accepts no liability for any damage caused by any virus transmitted by this email. ================================= _______________________________________________ Koha-devel mailing list Koha-devel@lists.koha.org<mailto:Koha-devel@lists.koha.org> http://lists.koha.org/mailman/listinfo/koha-devel </PRE> <html> <body> ------------------------------------------------------------<br /> This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain information that is proprietary, confidential, and exempt from disclosure under applicable law. Any unauthorized review, use, disclosure, or distribution is prohibited. If you have received this email in error please notify the sender by return email and delete the original message. Please note, the recipient should check this email and any attachments for the presence of viruses. The organization accepts no liability for any damage caused by any virus transmitted by this email.<br /> ================================= </body> </html> <PRE>
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