diff --git a/src/android/io/sqlc/SQLitePlugin.java b/src/android/io/sqlc/SQLitePlugin.java
index 432d36651..8e8c89d27 100755
--- a/src/android/io/sqlc/SQLitePlugin.java
+++ b/src/android/io/sqlc/SQLitePlugin.java
@@ -44,7 +44,7 @@ public class SQLitePlugin extends CordovaPlugin {
      * THANKS to @NeoLSN (Jason Yang/楊朝傑) for giving the pointer in:
      * https://github.com/litehelpers/Cordova-sqlite-storage/issues/727
      */
-    static Map<String, DBRunner> dbrmap = new ConcurrentHashMap<String, DBRunner>();
+    Map<String, DBRunner> dbrmap = new ConcurrentHashMap<String, DBRunner>();
 
     /**
      * NOTE: Using default constructor, no explicit constructor.
diff --git a/www/SQLitePlugin.js b/www/SQLitePlugin.js
index 497c30876..51ff64b8d 100644
--- a/www/SQLitePlugin.js
+++ b/www/SQLitePlugin.js
@@ -467,7 +467,16 @@
         }
       }
     };
-    cordova.exec(mycb, null, "SQLitePlugin", "backgroundExecuteSqlBatch", [
+    cordova.exec(mycb, function(message){
+      if(typeof result === "string"){
+	          console.log(result);
+            if (tx.error && typeof tx.error === 'function') {
+                tx.error(newSQLError(result, 0));
+            }
+
+      }
+      console.log('error in running backgroundExecuteSqlBatch');
+    }, "SQLitePlugin", "backgroundExecuteSqlBatch", [
       {
         dbargs: {
           dbname: this.db.dbname