https://community.qlik.com/t5/Talend-Studio/resolved-Connection-failure-on-mysqlinput/m-p/2359599#M124357 I know this problem: <BR /> <A href="http://stackoverflow.com/questions/2121829/mysql-jdbc-communications-link-failure" rel="nofollow noopener noreferrer">http://stackoverflow.com/questions/2121829/mysql-jdbc-communications-link-failure</A> <BR />is a discussion about this topic and so far there is no real solution. It is not a problem from Talend, it is a problem of the recent release of the JDBC driver for MySQL. Thu, 24 Jul 2014 19:47:17 GMT Anonymous 2014-07-24T19:47:17Z https://community.qlik.com/t5/Talend-Studio/resolved-Connection-failure-on-mysqlinput/m-p/2359598#M124356 Hi, <BR />I have a problem running jobs in command line. <BR />I try to run a job which call other jobs (total of 12 jobs). When i run it using Talend Open Studio, it works, but when i run it in command line, i'm getting this error on a random mysqlinput : <BR />---- <BR />Exception in component tMysqlInput_11 <BR />com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure <BR />The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. <BR />Caused by: java.net.ConnectException: Connection timed out <BR />---- <BR />Problem is that I get this error on random MysqlInput (sometimes I get this on the first jobs, sometimes on the last, etc... ). <BR />I saw that this could be resolved by increasing&nbsp;"wait_timeout" and "interactive_timeout" =&gt; they're already at "28800" so it should be okay. (?) <BR />If you have any idea what could be resolve this, I would be glad to know it <span class="lia-inline-image-display-wrapper" image-alt="0683p000009MACn.png"><img src="https://community.qlik.com/t5/image/serverpage/image-id/154443iC5B8CACEF3D12C6A/image-size/large?v=v2&amp;px=999" role="button" title="0683p000009MACn.png" alt="0683p000009MACn.png" /></span> <BR />Thanks. <BR />(Sry for my english, I'm doing my best). Thu, 24 Jul 2014 16:00:44 GMT https://community.qlik.com/t5/Talend-Studio/resolved-Connection-failure-on-mysqlinput/m-p/2359598#M124356 Anonymous 2014-07-24T16:00:44Z https://community.qlik.com/t5/Talend-Studio/resolved-Connection-failure-on-mysqlinput/m-p/2359599#M124357 I know this problem: <BR /> <A href="http://stackoverflow.com/questions/2121829/mysql-jdbc-communications-link-failure" rel="nofollow noopener noreferrer">http://stackoverflow.com/questions/2121829/mysql-jdbc-communications-link-failure</A> <BR />is a discussion about this topic and so far there is no real solution. It is not a problem from Talend, it is a problem of the recent release of the JDBC driver for MySQL. Thu, 24 Jul 2014 19:47:17 GMT https://community.qlik.com/t5/Talend-Studio/resolved-Connection-failure-on-mysqlinput/m-p/2359599#M124357 Anonymous 2014-07-24T19:47:17Z