Discussions
Categories
- 196.7K All Categories
- 2.2K Data
- 235 Big Data Appliance
- 1.9K Data Science
- 449.9K Databases
- 221.6K General Database Discussions
- 3.8K Java and JavaScript in the Database
- 31 Multilingual Engine
- 549 MySQL Community Space
- 478 NoSQL Database
- 7.9K Oracle Database Express Edition (XE)
- 3K ORDS, SODA & JSON in the Database
- 532 SQLcl
- 4K SQL Developer Data Modeler
- 186.9K SQL & PL/SQL
- 21.3K SQL Developer
- 295.4K Development
- 17 Developer Projects
- 138 Programming Languages
- 292.1K Development Tools
- 104 DevOps
- 3.1K QA/Testing
- 645.9K Java
- 28 Java Learning Subscription
- 37K Database Connectivity
- 153 Java Community Process
- 105 Java 25
- 22.1K Java APIs
- 138.1K Java Development Tools
- 165.3K Java EE (Java Enterprise Edition)
- 17 Java Essentials
- 158 Java 8 Questions
- 85.9K Java Programming
- 79 Java Puzzle Ball
- 65.1K New To Java
- 1.7K Training / Learning / Certification
- 13.8K Java HotSpot Virtual Machine
- 94.2K Java SE
- 13.8K Java Security
- 203 Java User Groups
- 24 JavaScript - Nashorn
- Programs
- 400 LiveLabs
- 37 Workshops
- 10.2K Software
- 6.7K Berkeley DB Family
- 3.5K JHeadstart
- 5.6K Other Languages
- 2.3K Chinese
- 170 Deutsche Oracle Community
- 1.1K Español
- 1.9K Japanese
- 230 Portuguese
Slow response time for createPool method

Hello,
We recently started seeing slow response times when calling createPool from our NodeJs application to our Oracle DB. Previously these calls were taking 1-2 seconds and now they are taking 6-8 seconds. Our NodeJs app is deployed as a AWS Lambda function.
We have engaged our DBAs, but they are having trouble finding any logs corresponding to the createPool method call.
We're looking for suggestions on how to pinpoint the source of the slowness. Is it our NodeJs code? The Oracle DB? Or perhaps it's a network issue. Any help would be appreciated.
Below is the snippet of code that is creating the pool:
var AWSXRay = require('aws-xray-sdk');
const oracleDB = require("oracledb");
const mysql = require("mysql2/promise");
const getConfig = require("./dbconfig.js");
const getDb = (dbType) => {
const databases = {
oracleDB: oracleDB,
mysql: mysql,
};
return databases[dbType];
};
async function connector(_dbName, dbType, state) {
const db = getDb(dbType);
const seg = AWSXRay.getSegment();
let status;
try {
!state[_dbName] ? (state[_dbName] = {}) : null;
if (!state[_dbName].dbconfig){
let sub = seg.addNewSubsegment('getConfig');
state[_dbName].dbconfig = await getConfig(_dbName, dbType);
sub.close();
}
if( !state[_dbName].pool)
{
let sub = seg.addNewSubsegment('createPool');
state[_dbName].pool = await db.createPool(state[_dbName].dbconfig);
sub.close();
}
status = "success";
} catch (error) {
status = "[Connection creation error] Error:" + error.message;
console.error(status);
}
return status;
}
module.exports = connector;
Best Answer
-
After further troubleshooting we determined the slowness was being caused by an issue with the DNS server. After correcting the configuration on the DNS server the DB calls were responding in the expected amount of time.
Answers
-
After further troubleshooting we determined the slowness was being caused by an issue with the DNS server. After correcting the configuration on the DNS server the DB calls were responding in the expected amount of time.