Nick, Two other Zopistas reported similar problems. Both succeeded eventually in getting Xron started, but we didn't succeed in diagnosing the problem, nor in determining precisely how to work around it. I myself haven't been able to reproduce the problem. The problem seems to occur only on Linux, but it does not always occur. Some users have successfully started Xron on Linux with no problem. The problem seems to have to do with contention for a lock on ZODB. Did you see any log or console message that would confirm this? One user went to the console and killed all the Zope processes that were running at the time, then restarted Zope from the command line. The second time, Zope started up correctly with Xron. Another user thought that he had mistakenly tried to start Zope while logged in as root. When he restarted as a different user, Zope started up with Xron correctly. I suspect that the user was not relevant to the Xron problem (it is normal in some installations to start as root), but that the restarting was the key. One user thought that the monitor process contributed to the lock contention. I don't know, but it might be worthwhile to try to restart Zope without the monitor (changing the start-up options to disable the monitor). The problem seems to relate to Xron's creating the Schedule catalog the first time the Xron product is loaded during Zope start-up. If you succeed in creating the Schedule one time, the problem will not recurr, as Xron will just use the existing Schedule. I hope that helps you get started. Let me know how it goes. I'll copy this email to the zope list in hopes that someone else can shed some light on the problem. -- Loren ----- Original Message ----- From: "Nicholas Lo" <nicklo@siliconcreation.com> To: <lstaffor@dynalogic.com> Sent: August 18, 2000 12:41 AM Subject: xcron test
Hi Loren,
I have a problem with installing Xron 0.9 onto my machine. Currently, I'm running SuSE Linux 6.4 on a 600MHz/128Mb/20Gb PC. I have followed the release note and set the STUPID_LOG_FILE environment variable to point the log file, and Xron itself is, of course, resides in the /Products directory. When I start Zope, the console looks okay. However, the browser keeps on loading and loading and could not show the Zope management screen. I have also tried Xron on my notebook, which is running Win98. Everything works just fine. I just wonder what's gone wrong.
Thanks.
Nick