diff --git a/src/database.js b/src/database.js
index 99d4343..b33000b 100644
--- a/src/database.js
+++ b/src/database.js
@@ -21,7 +21,7 @@ const Base_Tables = {
     Applications: {
         APP_NAME: "VARCHAR(64) NOT NULL",
         ADMIN_ID: "CHAR(34) NOT NULL",
-        SUB_ADMINS: "VARCHAR(MAX)",
+        SUB_ADMINS: "VARCHAR(3500)",
         PRIMARY: "KEY (APP_NAME)"
     }
 };
@@ -67,7 +67,7 @@ function Database(user, password, dbname, host = 'localhost') {
             for (let t in Base_Tables)
                 statements.push("CREATE TABLE IF NOT EXISTS " + t + "( " +
                     Object.keys(Base_Tables[t]).map(a => a + " " + Base_Tables[t][a]).join(", ") + " )");
-            Promise.all(statements.forEach(s => db.query(s)))
+            Promise.all(statements.map(s => db.query(s)))
                 .then(result => resolve(result))
                 .catch(error => reject(error));
         });
@@ -147,17 +147,17 @@ function Database(user, password, dbname, host = 'localhost') {
     db.getBase = function() {
         return new Promise((resolve, reject) => {
             let tables = Object.keys(Base_Tables);
-            Promise.all(tables.forEach(t => db.query("SELECT * FROM " + t))).then(result => {
+            Promise.all(tables.map(t => db.query("SELECT * FROM " + t))).then(result => {
                 let tmp = Object.fromEntries(tables.map((t, i) => [t, result[i]]));
                 result = {};
                 result.lastTx = Object.fromEntries(tmp.LastTxs.map(a => [a.ID, a.N]));
                 result.sn_config = Object.fromEntries(tmp.Configs.map(a => [a.NAME, a.VAL]));
                 result.appList = Object.fromEntries(tmp.Applications.map(a => [a.APP_NAME, a.ADMIN_ID]));
                 result.appSubAdmins = Object.fromEntries(tmp.Applications.map(a => [a.APP_NAME, a.SUB_ADMINS.split(",")]));
-                result.supernodes = Object.fromEntries(tmp.SuperNodes.map(a.FLO_ID, {
+                result.supernodes = Object.fromEntries(tmp.SuperNodes.map(a => [a.FLO_ID, {
                     pubKey: a.PUB_KEY,
                     uri: a.URI
-                }));
+                }]));
                 resolve(result);
             }).catch(error => reject(error));
         });
@@ -166,19 +166,19 @@ function Database(user, password, dbname, host = 'localhost') {
     db.createTable = function(snID) {
         return new Promise((resolve, reject) => {
             let statement = "CREATE TABLE IF NOT EXISTS _" + snID + " ( " +
-                H_struct.VECTOR_CLOCK + " VARCHAR(50) NOT NULL, " +
+                H_struct.VECTOR_CLOCK + " VARCHAR(52) NOT NULL, " +
                 H_struct.SENDER_ID + " CHAR(34) NOT NULL, " +
                 H_struct.RECEIVER_ID + " CHAR(34) NOT NULL, " +
-                H_struct.APPLICATION + " VARCHAR(128) NOT NULL, " +
-                H_struct.TYPE + " VARCHAR(1024), " +
+                H_struct.APPLICATION + " TINYTEXT NOT NULL, " +
+                H_struct.TYPE + " TINYTEXT, " +
                 B_struct.MESSAGE + " TEXT NOT NULL, " +
                 B_struct.TIME + " INT NOT NULL, " +
                 B_struct.SIGNATURE + " VARCHAR(160) NOT NULL, " +
                 B_struct.PUB_KEY + " CHAR(66) NOT NULL, " +
-                B_struct.COMMENT + " VARCHAR(1024), " +
+                B_struct.COMMENT + " TINYTEXT, " +
                 L_struct.STATUS + " INT NOT NULL, " +
                 L_struct.LOG_TIME + " INT NOT NULL, " +
-                T_struct.TAG + " VARCHAR (1024), " +
+                T_struct.TAG + " TINYTEXT, " +
                 T_struct.TAG_TIME + " INT, " +
                 T_struct.TAG_KEY + " CHAR(66), " +
                 T_struct.TAG_SIGN + " VARCHAR(160), " +
diff --git a/src/floBlockchainAPI.js b/src/floBlockchainAPI.js
index 639fde6..0facffb 100644
--- a/src/floBlockchainAPI.js
+++ b/src/floBlockchainAPI.js
@@ -41,7 +41,7 @@
         //Promised function to get data from API
         promisedAPI: function(apicall) {
             return new Promise((resolve, reject) => {
-                console.log(apicall);
+                //console.log(apicall);
                 this.util.fetch_api(apicall)
                     .then(result => resolve(result))
                     .catch(error => reject(error));
@@ -389,7 +389,7 @@
                             if (options.limit <= 0)
                                 options.limit = response.items.length;
                             var filteredData = [];
-                            for (i = 0; i < (response.totalItems - options.ignoreOld) &&
+                            for (let i = 0; i < (response.totalItems - options.ignoreOld) &&
                                 filteredData.length < options.limit; i++) {
                                 if (options.sentOnly && response.items[i].vin[0].addr !== addr)
                                     continue;
diff --git a/src/floGlobals.js b/src/floGlobals.js
index 5302453..6bea3e7 100644
--- a/src/floGlobals.js
+++ b/src/floGlobals.js
@@ -27,4 +27,4 @@ const floGlobals = {
 };
 
 (typeof global !== "undefined" ? global : window).cryptocoin = floGlobals.blockchain;
-('object' === typeof module) ? module.export = floGlobals : null;
\ No newline at end of file
+('object' === typeof module) ? module.exports = floGlobals : null;
\ No newline at end of file
diff --git a/src/intra.js b/src/intra.js
index ba0ae21..4c7b146 100644
--- a/src/intra.js
+++ b/src/intra.js
@@ -460,13 +460,13 @@ function sendStoredData(lastlogs, node) {
                     id: n,
                     status: true
                 }));
-                console.info(`START: ${snID} data sync(send) to ${node.id}`);
+                console.log(`START: ${snID} data sync(send) to ${node.id}`);
                 //TODO: efficiently handle large number of data instead of loading all into memory
                 result.forEach(d => node.send(packet_.constuct({
                     type: STORE_BACKUP_DATA,
                     data: d
                 })));
-                console.info(`END: ${snID} data sync(send) to ${node.id}`);
+                console.log(`END: ${snID} data sync(send) to ${node.id}`);
                 node.send(packet_.constuct({
                     type: DATA_SYNC,
                     id: n,
@@ -479,7 +479,7 @@ function sendStoredData(lastlogs, node) {
 
 //Indicate sync of data
 function dataSyncIndication(snID, status, from) {
-    console.info(`${status ? 'START':'END'}: ${snID} data sync(receive) form ${from}`);
+    console.log(`${status ? 'START':'END'}: ${snID} data sync(receive) form ${from}`);
 };
 
 //Store (backup) data
@@ -543,7 +543,7 @@ function forwardToNextNode(mode, data) {
 
 //Data migration processor
 function dataMigration(node_change, flag) {
-    if (!Object.keys(node_change))
+    if (!Object.keys(node_change).length)
         return;
     console.log("Node list changed! Data migration required");
     if (flag) dataMigration.intimateAllNodes(); //Initmate All nodes to call refresher
@@ -581,7 +581,7 @@ dataMigration.process_del = async function(del_nodes) {
             let remaining = process_nodes.length;
             process_nodes.forEach(n => {
                 DB.getData(n, 0).then(result => {
-                    console.info(`START: Data migration for ${n}`);
+                    console.log(`START: Data migration for ${n}`);
                     //TODO: efficiently handle large number of data instead of loading all into memory
                     result.forEach(d => {
                         let closest = kBucket.closestNode(d.receiverID);
@@ -597,7 +597,7 @@ dataMigration.process_del = async function(del_nodes) {
                                 data: d
                             }));
                     });
-                    console.info(`END: Data migration for ${n}`);
+                    console.log(`END: Data migration for ${n}`);
                     _list.delete(n);
                     DB.dropTable(n);
                     remaining--;
diff --git a/src/kBucket.js b/src/kBucket.js
index fa7aa48..4560ef9 100644
--- a/src/kBucket.js
+++ b/src/kBucket.js
@@ -1,5 +1,5 @@
 'use strict';
-require('./lib/BuildKBucket')
+require('./lib/BuildKBucket');
 (function(GLOBAL) {
     var kBucket = GLOBAL.kBucket = {};
     var SNKB, SNCO;
@@ -26,7 +26,7 @@ require('./lib/BuildKBucket')
         });
         list.forEach(id => KB.add({
             id: decodeID(id),
-            floID: floID
+            floID: id
         }));
         return KB;
     };
diff --git a/src/main.js b/src/main.js
index bfdb199..471d83a 100644
--- a/src/main.js
+++ b/src/main.js
@@ -27,6 +27,7 @@ function startNode() {
         client.DB = DB;
         client._list = intra._list;
         loadBase().then(base => {
+            console.log("Load Database successful");
             //Set base data from DB to floGlobals
             floGlobals.supernodes = base.supernodes;
             floGlobals.sn_config = base.sn_config;
@@ -38,11 +39,11 @@ function startNode() {
             const server = new Server(config["port"], client, intra);
             server.refresher = refreshData;
             intra.refresher = refreshData;
-        }).catch(error => reject(error));
-    }).catch(error => reject(error));
+        }).catch(error => console.error(error));
+    }).catch(error => console.error(error));
 };
 
-function loadBase(DB) {
+function loadBase() {
     return new Promise((resolve, reject) => {
         DB.createBase().then(result => {
             DB.getBase(DB)
@@ -57,11 +58,13 @@ const refreshData = {
     base: null,
     invoke(flag = true) {
         this.count = floGlobals.sn_config.refreshDelay;
+        console.info("Refresher processor has started at " + Date());
         refreshBlockchainData(this.base, flag).then(result => {
             console.log(result);
             diskCleanUp(this.base)
-                .then(result => console.info(result))
-                .catch(warn => console.warn(warn));
+                .then(result => console.log(result))
+                .catch(warn => console.warn(warn))
+                .finally(_ => console.info("Refresher processor has finished at " + Date()));
         }).catch(error => console.error(error));
     },
     get countdown() {
@@ -76,7 +79,7 @@ function refreshBlockchainData(base, flag) {
         readSupernodeConfigFromAPI(base, flag).then(result => {
             console.log(result);
             kBucket.launch().then(result => {
-                console.log(result);
+                //console.log(result);
                 readAppSubAdminListFromAPI(base)
                     .then(result => console.log(result))
                     .catch(warn => console.warn(warn))
@@ -139,11 +142,9 @@ function readSupernodeConfigFromAPI(base, flag) {
             Promise.allSettled(promises).then(results => {
                 if (results.reduce((a, r) => r.status === "rejected" ? ++a : a, 0))
                     console.warn("Some data might not have been saved in database correctly");
-                else
-                    console.log("All data are saved in database");
             });
             //Process data migration if nodes are changed
-            if (Object.keys(node_change))
+            if (Object.keys(node_change).length)
                 intra.dataMigration(node_change, flag);
             resolve('Updated Supernode Configuration');
         }).catch(error => reject(error));
diff --git a/src/set_globals.js b/src/set_globals.js
index 3531535..7a13650 100644
--- a/src/set_globals.js
+++ b/src/set_globals.js
@@ -5,4 +5,4 @@ global.fetch = require("node-fetch");
 //Set browser paramaters from param.json
 const param = require('../param.json');
 for(let p in param)
-    global[p] = param[p];
\ No newline at end of file
+    global[p] = param[p];