Update operation DAO implementation

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/operation/mgt/OperationManagerImpl.java

@@ -142,10 +142,7 @@ public class OperationManagerImpl implements OperationManager {
     @Override
     public Operation getNextPendingOperation(DeviceIdentifier deviceId) throws OperationManagementException {
         try {
-            OperationManagementDAOFactory.beginTransaction();
             Operation operation = operationDAO.getNextOperation(deviceId);
-            operation = this.lookupOperationDAO(operation.getType()).getOperation(operation.getId());
-            OperationManagementDAOFactory.commitTransaction();
             return operation;
         } catch (OperationManagementDAOException e) {
             try {

features/device-mgt/org.wso2.carbon.device.mgt.server.feature/src/main/resources/dbscripts/cdm/h2.sql

@@ -40,7 +40,7 @@ CREATE TABLE IF NOT EXISTS DM_CONFIG_OPERATION (
 
 CREATE TABLE IF NOT EXISTS DM_COMMAND_OPERATION (
     OPERATION_ID INTEGER NOT NULL,
-    ENABLED INTEGER NOT NULL DEFAULT 0,
+    ENABLED BOOLEAN NOT NULL DEFAULT FALSE,
     PRIMARY KEY (OPERATION_ID),
     CONSTRAINT fk_dm_operation_command FOREIGN KEY (OPERATION_ID) REFERENCES
     DM_OPERATION (ID) ON DELETE NO ACTION ON UPDATE NO ACTION