https://answers.axonivy.com/questions/3592/can-not-connect-to-oracle-database-connection-reset-by-peer<p>I'm not able to connect ivy with an oracle database. Ivy is installed on CentOS.</p> <pre><code>Caused by: ch.ivyteam.ivy.persistence.PersistencyException: java.sql.SQLRecoverableException: IO Error: Connection reset by peer, Authentication lapse 295094 ms. </code></pre>enWed, 19 Dec 2018 09:31:21 -0500https://answers.axonivy.com/questions/3592/can-not-connect-to-oracle-database-connection-reset-by-peer/3593<p>The oracle jdbc driver needs some random numbers. For this it uses java to access <em>/dev/random</em>. <em>/dev/random</em> is run by the system and requires hardware interactions like mouse clicks. On highly virtualized systems this can be difficult. There are two possibilities:</p> <p><strong>1) Use /dev/urandom</strong></p> <p>Add the following line in <em>AxonIvyEngine.conf</em></p> <pre><code>JAVA_OPTS="$JAVA_OPTS -Djava.security.egd=file:///dev/urandom" </code></pre> <p><strong>2) Install entropy daemon</strong></p> <p>Install an entropy daemon like <a href="https://www.digitalocean.com/community/tutorials/how-to-setup-additional-entropy-for-cloud-servers-using-haveged">haveged</a> which feeds <em>/dev/random</em>.</p> <p><strong>Further ressources:</strong></p> <p><a href="https://stackoverflow.com/questions/6110395/sqlrecoverableexception-i-o-exception-connection-reset">https://stackoverflow.com/questions/6110395/sqlrecoverableexception-i-o-exception-connection-reset</a></p>Alex SuterWed, 19 Dec 2018 09:31:21 -0500https://answers.axonivy.com/questions/3592/can-not-connect-to-oracle-database-connection-reset-by-peer/3593