diff --git a/clickstream/src/main/java/software/aws/solution/clickstream/client/EventRecorder.java b/clickstream/src/main/java/software/aws/solution/clickstream/client/EventRecorder.java
index a5bc1f1..cef0362 100644
--- a/clickstream/src/main/java/software/aws/solution/clickstream/client/EventRecorder.java
+++ b/clickstream/src/main/java/software/aws/solution/clickstream/client/EventRecorder.java
@@ -29,6 +29,7 @@
 
 import java.util.Locale;
 import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 import java.util.concurrent.LinkedBlockingQueue;
 import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
@@ -101,6 +102,7 @@ public Uri recordEvent(@NonNull final AnalyticsEvent event) {
             }
         } else {
             LOG.error(String.format("Error to save event with EventType: %s", event.getEventType()));
+            sendEventImmediately(event);
         }
         return uri;
     }
@@ -207,5 +209,21 @@ String[] getBatchOfEvents(final Cursor cursor) {
 
         return new String[] {eventBuilder.toString(), lastEventId};
     }
+
+    /**
+     * Method for send event immediately when event saved fail.
+     * @param event AnalyticsEvent
+     */
+    public void sendEventImmediately(AnalyticsEvent event) {
+        Runnable task = () -> {
+            NetRequest.uploadEvents("[" + event.toJSONObject().toString() + "]",
+                clickstreamContext.getClickstreamConfiguration(),
+                bundleSequenceId);
+            bundleSequenceId += 1;
+            clickstreamContext.getSystem().getPreferences()
+                .putInt(KEY_BUNDLE_SEQUENCE_ID_PREF, bundleSequenceId);
+        };
+        Executors.newSingleThreadExecutor().execute(task);
+    }
 }
 
diff --git a/clickstream/src/main/java/software/aws/solution/clickstream/client/db/ClickstreamDBUtil.java b/clickstream/src/main/java/software/aws/solution/clickstream/client/db/ClickstreamDBUtil.java
index 40114b4..7f64b7b 100644
--- a/clickstream/src/main/java/software/aws/solution/clickstream/client/db/ClickstreamDBUtil.java
+++ b/clickstream/src/main/java/software/aws/solution/clickstream/client/db/ClickstreamDBUtil.java
@@ -18,14 +18,20 @@
 import android.content.ContentValues;
 import android.content.Context;
 import android.database.Cursor;
+import android.database.SQLException;
 import android.net.Uri;
 
+import com.amazonaws.logging.Log;
+import com.amazonaws.logging.LogFactory;
 import software.aws.solution.clickstream.client.AnalyticsEvent;
+import software.aws.solution.clickstream.client.EventRecorder;
 
 /**
  * Clickstream Database Util.
  */
 public class ClickstreamDBUtil {
+    private static final Log LOG = LogFactory.getLog(EventRecorder.class);
+
     /**
      * ClickstreamDBBase is a basic helper for accessing the database.
      */
@@ -58,7 +64,13 @@ public void closeDB() {
      * @return An Uri of the record inserted.
      */
     public Uri saveEvent(final AnalyticsEvent event) {
-        return clickstreamDBBase.insert(clickstreamDBBase.getContentUri(), generateContentValuesFromEvent(event));
+        Uri uri = null;
+        try {
+            uri = clickstreamDBBase.insert(clickstreamDBBase.getContentUri(), generateContentValuesFromEvent(event));
+        } catch (SQLException error) {
+            LOG.warn("SQLException: " + error.getMessage());
+        }
+        return uri;
     }
 
     private ContentValues generateContentValuesFromEvent(final AnalyticsEvent event) {
diff --git a/clickstream/src/test/java/software/aws/solution/clickstream/EventRecorderTest.java b/clickstream/src/test/java/software/aws/solution/clickstream/EventRecorderTest.java
index 93d067f..32d5618 100644
--- a/clickstream/src/test/java/software/aws/solution/clickstream/EventRecorderTest.java
+++ b/clickstream/src/test/java/software/aws/solution/clickstream/EventRecorderTest.java
@@ -69,6 +69,7 @@
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
 
 @RunWith(RobolectricTestRunner.class)
 @Config(manifest = Config.NONE)
@@ -567,6 +568,23 @@ public void testRecordEventRequestUploadTimestamp() throws Exception {
         assertTrue(requestResult);
     }
 
+    /**
+     * test save event failed and send event immediately.
+     *
+     * @throws Exception exception.
+     */
+    @Test
+    public void testSaveEventFailedAndWillSendEventImmediately() throws Exception {
+        dbUtil = mock(ClickstreamDBUtil.class);
+        ReflectUtil.modifyFiled(eventRecorder, "dbUtil", dbUtil);
+        when(dbUtil.saveEvent(event)).thenReturn(null);
+        eventRecorder.recordEvent(event);
+        verify(log).error("Error to save event with EventType: testEvent");
+        Thread.sleep(1500);
+        int bundleSequenceId = (int) ReflectUtil.getFiled(eventRecorder, "bundleSequenceId");
+        assertTrue(bundleSequenceId > 1);
+    }
+
     /**
      * common method to set request path.
      *
diff --git a/clickstream/src/test/java/software/aws/solution/clickstream/db/DBUtilTest.java b/clickstream/src/test/java/software/aws/solution/clickstream/db/DBUtilTest.java
index 7735ae5..ff0a441 100644
--- a/clickstream/src/test/java/software/aws/solution/clickstream/db/DBUtilTest.java
+++ b/clickstream/src/test/java/software/aws/solution/clickstream/db/DBUtilTest.java
@@ -15,7 +15,9 @@
 
 package software.aws.solution.clickstream.db;
 
+import android.content.ContentValues;
 import android.database.Cursor;
+import android.database.SQLException;
 import android.net.Uri;
 import androidx.test.core.app.ApplicationProvider;
 
@@ -28,13 +30,19 @@
 import org.robolectric.annotation.Config;
 import software.aws.solution.clickstream.AnalyticsEventTest;
 import software.aws.solution.clickstream.client.AnalyticsEvent;
+import software.aws.solution.clickstream.client.db.ClickstreamDBBase;
 import software.aws.solution.clickstream.client.db.ClickstreamDBUtil;
+import software.aws.solution.clickstream.util.ReflectUtil;
 
 import java.util.Objects;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotEquals;
 import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.doThrow;
+import static org.mockito.Mockito.mock;
 
 @RunWith(RobolectricTestRunner.class)
 @Config(manifest = Config.NONE, sdk = 26)
@@ -63,6 +71,21 @@ public void testInsertSingleEvent() {
         assertNotEquals(idInserted, 0);
     }
 
+    /**
+     * test insert single event failed.
+     *
+     * @throws Exception exception.
+     */
+    @Test
+    public void testInsertSingleEventFailed() throws Exception {
+        ClickstreamDBBase clickstreamDBBase = mock(ClickstreamDBBase.class);
+        ReflectUtil.modifyFiled(dbUtil, "clickstreamDBBase", clickstreamDBBase);
+        doThrow(new SQLException("Mocked SQLException")).when(clickstreamDBBase).insert(any(Uri.class), any(
+            ContentValues.class));
+        Uri uri = dbUtil.saveEvent(analyticsEvent);
+        assertNull(uri);
+    }
+
     /**
      * test query all.
      */