[ https://issues.jboss.org/browse/TEIID-3664?page=com.atlassian.jira.plugin... ] Kylin Soong updated TEIID-3664: ------------------------------- Attachment: reproduce.zip I extracted the _testConnectWithPooling_, made up a reproduce project, it can reproduce the issue: {code} $ unzip reproduce.zip $ cd reproduce/ $ mvn clean install dependency:copy-dependencies // use java 8 $ /usr/java/jdk1.8.0_25/bin/java -cp target/dependency/*:target/reproduce.jar Main // use java 7 $ /usr/java/jdk1.7.0_71/bin/java -cp target/dependency/*:target/reproduce.jar Main {code} Note that, the Main method will run _testConnectWithPooling_ 100 times. h3. My founding * If use java 8, around 15% run failed * If use java 7, around 1% run failed -- This message was sent by Atlassian JIRA (v6.4.11#64026)