[seam-issues] [JBoss JIRA] Commented: (JBSEAM-4528) static pages don't work at all with database down and XA datasource used
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Thu Mar 4 15:55:10 EST 2010
[ https://jira.jboss.org/jira/browse/JBSEAM-4528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12518212#action_12518212 ]
deanhiller commented on JBSEAM-4528:
oh, this is interesting. It turns out postgres JDBC driver is not working when in jboss 5.1 just like oracle so maybe seam changes it's logic in jboss as it is working in tomcat just fine with postgres but oracle/tomcat appears to be broken. how bizarre....seems to need a very specific configuration to work here....still looking into and will add more notes if I find more.
> static pages don't work at all with database down and XA datasource used
> Key: JBSEAM-4528
> URL: https://jira.jboss.org/jira/browse/JBSEAM-4528
> Project: Seam
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.2.0.GA
> Environment: postgres or oracle with postgres or oracle XADatasource. postgres jdbc driver is fine while oracle driver is not
> Reporter: deanhiller
> Priority: Critical
> Attachments: oracleBAD.log, postgres.log
> If this is a hibernate bug, please report hibernate issue and ticket here as other seam users will run into this problem and it looks like a seam framework problem(or at least could be solved in seam but it may be possible to solve in hibernate too and could be solved in each and every driver datasource as well).
> Steps to reproduce
> 1. start up the jboss 5.1.0 with latest seam
> 2. pull your internet connection so the db is gone
> 3. have all your customers go to a static page like /web/error.xhtml
> RESULT: jboss goes to it's knees as users in IE end up in infinite redirects to your server causing more and more load on the server. The drivers talk to the database when they should not be. I have a work around proxy driver for oracle's jdbc driver. I do not however have a fix for oracle's datasource or postgres datasource.
> I imagine someone could write a proxy datasource that would solve this problem for all people, hibernate, seam and all xa drivers. I will attach logs of postgres xa driver and oracle one but basically they are trying to open a connection to database when ANY http request comes in until waiting to see if we actually do any select statements or updates or inserts. For some reason, the postgres driver and oracle driver where fine here...they did not make db requests when an http request came in. The oracle driver however did make a request to the db when commit is called even if no sql was done against the db where postgres driver ignored the commit since no sql was done. I will try to attach files or more comments here. PLEASE if you report a tic in hibernate put it in here for others to find when they hit this issue.
> seam doesn't work when database goes down
> seam infinite redirect on db outage
> database failure causes seam to not work
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