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From Jonathan Rosenberg>
Subject Why am I Getting org.apache.catalina.realm.JDBCRealm getPassword SEVERE: Exception performing authentication?
Date Wed, 08 Feb 2012 17:41:25 GMT
Vital statistics:

    Apache Tomcat/7.0.22 	1.6.0_22-b04 	Sun Microsystems Inc. 	Linux

1) Using org.apache.catalina.realm.UserDatabaseRealm for
authentication to Manager app.  No pooling.
2) Running a Grails app that is using CAS authentication on remote
server.  Using dbcp pooling.
3) App & Tomcat auth use different DBs  App's DB is remote, Tomcat is
using local DB server.
4) App is in testing & lightly used during the day.  Works fine.
5) App sits idle over night.

If I access my app first thing in the morning, I get the following

Feb 8, 2012 9:09:58 AM org.apache.catalina.realm.JDBCRealm getPassword
SEVERE: Exception performing authentication
No operations allowed after connection closed.Connection was
implicitly closed by the driver.
       at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
. . . .

To me this looks like a DB timeout issue to be solved by pooling.  But
here's where I'm confused:

1) I'm trying to authenticate via CAS.  Tomcat authentication should
not be an issue.  Why is Tomcat trying to authenticate?
2) After this exception, my app gets repeated connection failures
complaining about closed DB connections.  But I am using dbcp pooling,
which I;ve done many times without problems.  I feel as is this is
related to the Tomcat auth failure.
3) I have to reload the app to make things start working.

I've spent a few days on this, but just made the (theorized)
connection between Tomcat auth failure & my app's failures.

I'm gonna start digging into this theory but was hoping for some ideas
& pointers.


Jonathan Rosenberg
Founder & Executive Director
Tabby's Place, a Cat Sanctuary

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