Optimisation du DatabaseHelper

WARN  com.zaxxer.hikari.util.LeakTask - Connection leak detection triggered, stack trace follows
java.lang.Exception: null
	at com.univ.utils.ContexteDao.getConnection(ContexteDao.java:50) ~[core-6.02.26.jar:na]
	at com.kosmos.uas.utils.DatabaseHelper.saveDatabase(DatabaseHelper.java:45) ~[uas-2.02.06.jar:na]
	at com.kosmos.uas.utils.PluginSiteHelper.saveDataBase(PluginSiteHelper.java:329) ~[uas-2.02.06.jar:na]
	at com.kosmos.uas.plugin.DefaultPluginSite.traiterCopy(DefaultPluginSite.java:204) ~[uas-2.02.06.jar:na]
	at com.kosmos.uas.plugin.DefaultPluginSite$$FastClassByCGLIB$$ca5fc26.invoke(<generated>) ~[spring-core-3.2.2.RELEASE.jar:na]
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-3.2.2.RELEASE.jar:3.2.2.RELEASE]
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:698) ~[spring-aop-3.2.2.RELEASE.jar:3.2.2.RELEASE]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) ~[spring-aop-3.2.2.RELEASE.jar:3.2.2.RELEASE]
	at org.springframework.aop.interceptor.AsyncExecutionInterceptor$1.call(AsyncExecutionInterceptor.java:89) ~[spring-aop-3.2.2.RELEASE.jar:3.2.2.RELEASE]
	at java.util.concurrent.FutureTask.run(FutureTask.java:262) ~[na:1.7.0_101]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_101]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_101]
	at java.lang.Thread.run(Thread.java:745) [na:1.7.0_101]

try {
			final String finalPath = String.format("%s%s-%s.sql", path, contexteDao.getConnection().getCatalog(), df.format(new Date(System.currentTimeMillis())));
			final MySQLDumpWriter dumpWriter = new MySQLDumpWriter(contexteDao.getConnection());
			dumpWriter.dumpDB(Collections.<String> emptyList(), finalPath);
		} catch (final Exception e) {
			throw new ErreurApplicative("Une erreur est survenue lors de la tentative de création d'un dump de sauvegarde", e);
		} finally {
			if (contexteDao != null) {
				contexteDao.close();
			}
		}