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Date: Fri, 15 Jun 2012 08:05:46 +0000 (UTC)
From: "licheng (JIRA)" <jira@apache.org>
To: dev@jackrabbit.apache.org
Message-ID: <1129841869.18112.1339747547003.JavaMail.jiratomcat@issues-vm>
Subject: [jira] [Created] (JCR-3344) Multhireads hang issue occurs because
 of oracle database socket read blocks forever
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licheng created JCR-3344:
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             Summary: Multhireads hang issue occurs because of oracle database socket read blocks forever
                 Key: JCR-3344
                 URL: https://issues.apache.org/jira/browse/JCR-3344
             Project: Jackrabbit Content Repository
          Issue Type: Bug
          Components: jackrabbit-core
    Affects Versions: 2.2
         Environment: Winxp+oracle+JBoss
            Reporter: licheng
             Fix For: 2.2
         Attachments: dead lock_mr1.log, deak lock_mr2.log

During our test, the network between JBoss and Oracle has some problem for a while. At that time, one JR thread which holding Global ISM lock is doing socket read with Oracle. Unfortunately, this blocking socket read doesn't return anymore. Meanwhile, some other threads are warting for the global ISM lock. As a result, many threads are blocked.
Although we only hit it once, but it is really a serious problem. To workarount it, we have to restart our application server. To our custom, it is not acceptable. 


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