diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.core/pom.xml b/components/device-mgt/org.wso2.carbon.device.mgt.core/pom.xml
index 91e0fc50b..f5406926b 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.core/pom.xml
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.core/pom.xml
@@ -88,10 +88,6 @@
             <groupId>org.eclipse.osgi</groupId>
             <artifactId>org.eclipse.osgi</artifactId>
         </dependency>
-        <dependency>
-            <groupId>org.eclipse.equinox</groupId>
-            <artifactId>org.eclipse.equinox.common</artifactId>
-        </dependency>
         <dependency>
             <groupId>org.wso2.carbon</groupId>
             <artifactId>org.wso2.carbon.device.mgt.common</artifactId>
@@ -108,14 +104,6 @@
             <groupId>org.wso2.carbon</groupId>
             <artifactId>org.wso2.carbon.core</artifactId>
         </dependency>
-        <dependency>
-            <groupId>org.wso2.carbon</groupId>
-            <artifactId>org.wso2.carbon.ndatasource.core</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.wso2.carbon</groupId>
-            <artifactId>org.wso2.carbon.ndatasource.rdbms</artifactId>
-        </dependency>
         <dependency>
             <groupId>com.h2database.wso2</groupId>
             <artifactId>h2-database-engine</artifactId>
@@ -127,11 +115,11 @@
         </dependency>
         <dependency>
             <groupId>org.wso2.carbon</groupId>
-            <artifactId>org.wso2.carbon.tomcat.ext</artifactId>
+            <artifactId>org.wso2.carbon.user.core</artifactId>
         </dependency>
         <dependency>
             <groupId>org.wso2.carbon</groupId>
-            <artifactId>org.wso2.carbon.tomcat</artifactId>
+            <artifactId>org.wso2.carbon.user.api</artifactId>
         </dependency>
     </dependencies>
 
diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dao/util/DeviceManagementDAOUtil.java b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dao/util/DeviceManagementDAOUtil.java
index dc38a96d4..20fa5e235 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dao/util/DeviceManagementDAOUtil.java
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dao/util/DeviceManagementDAOUtil.java
@@ -20,7 +20,6 @@ import org.apache.commons.logging.LogFactory;
 import org.wso2.carbon.context.CarbonContext;
 import org.wso2.carbon.device.mgt.core.dao.DeviceManagementDAOException;
 import org.wso2.carbon.device.mgt.core.dto.Device;
-import org.wso2.carbon.device.mgt.core.dto.DeviceType;
 import org.wso2.carbon.device.mgt.core.dto.Status;
 import org.wso2.carbon.device.mgt.core.internal.DeviceManagementDataHolder;
 import org.wso2.carbon.user.api.UserStoreException;
@@ -61,9 +60,6 @@ public final class DeviceManagementDAOUtil {
                 log.warn("Error occurred while closing database connection", e);
             }
         }
-        rs = null;
-        stmt = null;
-        conn = null;
     }
 
     /**
diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/internal/DeviceManagementDataHolder.java b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/internal/DeviceManagementDataHolder.java
index 552302bdb..8c8bf62bc 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/internal/DeviceManagementDataHolder.java
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/internal/DeviceManagementDataHolder.java
@@ -20,7 +20,6 @@
 package org.wso2.carbon.device.mgt.core.internal;
 
 import org.wso2.carbon.device.mgt.core.DeviceManager;
-import org.wso2.carbon.device.mgt.core.DeviceManagerImpl;
 import org.wso2.carbon.user.core.service.RealmService;
 import org.wso2.carbon.user.core.tenant.TenantManager;
 
@@ -31,7 +30,8 @@ public class DeviceManagementDataHolder {
     private DeviceManager deviceManager;
     private static DeviceManagementDataHolder thisInstance = new DeviceManagementDataHolder();
 
-    private DeviceManagementDataHolder() {}
+    private DeviceManagementDataHolder() {
+    }
 
     public static DeviceManagementDataHolder getInstance() {
         return thisInstance;
diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.mobile.impl/pom.xml b/components/device-mgt/org.wso2.carbon.device.mgt.mobile.impl/pom.xml
index 807464e49..6e4782972 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.mobile.impl/pom.xml
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.mobile.impl/pom.xml
@@ -107,12 +107,6 @@
             <groupId>org.testng</groupId>
             <artifactId>testng</artifactId>
         </dependency>
-        <dependency>
-            <groupId>commons-dbcp</groupId>
-            <artifactId>commons-dbcp</artifactId>
-            <version>1.2.2</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
-</project>
\ No newline at end of file
+</project>
diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.mobile.impl/src/test/org/wso2/carbon/device/mgt/mobile/impl/dao/FeatureDAOTestSuite.java b/components/device-mgt/org.wso2.carbon.device.mgt.mobile.impl/src/test/org/wso2/carbon/device/mgt/mobile/impl/dao/FeatureDAOTestSuite.java
index 8bc07619b..e90733b30 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.mobile.impl/src/test/org/wso2/carbon/device/mgt/mobile/impl/dao/FeatureDAOTestSuite.java
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.mobile.impl/src/test/org/wso2/carbon/device/mgt/mobile/impl/dao/FeatureDAOTestSuite.java
@@ -18,8 +18,6 @@
 
 package org.wso2.carbon.device.mgt.mobile.impl.dao;
 
-
-import org.apache.commons.dbcp.BasicDataSource;
 import org.testng.Assert;
 import org.testng.annotations.BeforeClass;
 import org.testng.annotations.Parameters;
diff --git a/pom.xml b/pom.xml
index 44542484c..8996113c0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -94,13 +94,6 @@
                 <artifactId>org.wso2.carbon.user.api</artifactId>
                 <version>${carbon.kernel.version}</version>
             </dependency>
-
-            <dependency>
-                <groupId>org.wso2.carbon</groupId>
-                <artifactId>org.wso2.carbon.utils</artifactId>
-                <version>${carbon.kernel.version}</version>
-            </dependency>
-
             <dependency>
                 <groupId>org.wso2.carbon</groupId>
                 <artifactId>org.wso2.carbon.logging</artifactId>
@@ -174,38 +167,6 @@
                 <artifactId>org.wso2.carbon.ndatasource.rdbms</artifactId>
                 <version>${carbon.kernel.version}</version>
             </dependency>
-            <dependency>
-                <groupId>org.wso2.carbon</groupId>
-                <artifactId>org.wso2.carbon.transaction.manager</artifactId>
-                <version>${carbon.platform.version}</version>
-            </dependency>
-            <dependency>
-                <groupId>org.jboss.spec.javax.transaction</groupId>
-                <artifactId>jboss-transaction-api_1.1_spec</artifactId>
-                <version>${jboss-transaction-api.version}</version>
-            </dependency>
-
-
-            <dependency>
-                <groupId>org.eclipse.osgi</groupId>
-                <artifactId>org.eclipse.osgi</artifactId>
-                <version>3.8.1.v20120830-144521</version>
-            </dependency>
-            <dependency>
-                <groupId>org.eclipse.equinox</groupId>
-                <artifactId>org.eclipse.equinox.common</artifactId>
-                <version>3.6.100.v20120522-1841</version>
-            </dependency>
-            <dependency>
-                <groupId>org.wso2.carbon</groupId>
-                <artifactId>org.wso2.carbon.logging</artifactId>
-                <version>${carbon.kernel.version}</version>
-            </dependency>
-            <dependency>
-                <groupId>org.wso2.carbon</groupId>
-                <artifactId>org.wso2.carbon.device.mgt.common</artifactId>
-                <version>${cdm.version}</version>
-            </dependency>
             <dependency>
                 <groupId>org.eclipse.osgi</groupId>
                 <artifactId>org.eclipse.osgi.services</artifactId>