https://answers.axonivy.com/questions/1244/how-ivyentitymanager-hanldes-transaction-of-persistence<p>My current project have 8 modules, it will deploy 8 Process Model Versions in Ivy Application, I set maximum connection of database is 5. But when I run my app, it created more than 5 so it make my app stopped, when I increased number of connection, It worked normally, and I saw it created 8 connections. Why?</p> <p>I am using IvyEntityManager to control transaction of entities. The problem is Ivy opened connection and retain it, not closes after I do operations(e.g merge...). So what IvyEntityManage does?</p>enTue, 07 Apr 2015 16:34:38 -0400https://answers.axonivy.com/questions/1244/how-ivyentitymanager-hanldes-transaction-of-persistence/1246<p>If the IvyEntityManager is used in IvyScript e.g.:</p> <pre><code>ivy.persistence.&lt;persistence unit name&gt;.merge(...) ivy.persistence.&lt;persistence unit name&gt;.persiste(...) ... </code></pre> <p>Then an connection and transation is created and before the method returns the transaction is closed and the connection goes back to the connection pool.</p>Christian StrebelTue, 07 Apr 2015 16:34:38 -0400https://answers.axonivy.com/questions/1244/how-ivyentitymanager-hanldes-transaction-of-persistence/1246