oracledb nodejs package getConnection('hr') method hang after few hours

Question

I have created the express server application which connect to oracle database in order to perform DB operations. That application works fine in dev environment and then I published it in ubuntu vm using pm2. Initially it works fine but after few hours getConnection('hr') method hang the request.

Inside application, First I create the oracledb connection pool at the startup of the express app. Here is the code for connection pool.

const initialize = async () => {
    const pool = await oracledb.createPool({
        user: 'username',
        password: 'password',
        connectString: 'x.x.x.x:1521/sampledev',
        poolMin: 5,
        poolMax: 10,
        poolIncrement: 1,
        poolAlias: "hr",
    });

    console.log("Connected to the oracle db pool");
}

Here is the endpoint that use oracle connection.

app.get('/dbstatus', async (req, res) => {
    try {
        oracleConnApps = await oracledb.getConnection('hr');
        console.log("DB Connected")

        // do stuff

        res.status(200).send({ status: true, data: "OK" });
    } catch (err) {
        console.log("CATCH EXECUTE")
        console.log({ status: true, data: err.message })
        res.status(400).send({ status: false, data: err.message });
    } finally {
        console.log("FINALLY EXECUTE")
        if (oracleConnApps) await oracleConnApps.close();
    }
})

After few hours getConnection method hang the server and it does not trigger the catch block.

I used oracledb: 6.2.0 version and thin mode to connect DB.